diff --git a/AUTHORS b/AUTHORS
index 05f6f4111da..9c42e1f1bbc 100644
--- a/AUTHORS
+++ b/AUTHORS
@@ -210,3 +210,4 @@ Yang Zongze
 Yara Grassi Gouffon
 Yifan Peng
 Zhang Liang
+Nikita Borovikov
diff --git a/CHANGELOG.md b/CHANGELOG.md
index 94035e915c3..40bb662ecb4 100644
--- a/CHANGELOG.md
+++ b/CHANGELOG.md
@@ -70,6 +70,7 @@ We refer to [GitHub issues](https://github.com/JabRef/jabref/issues) by using `#
 - The Medline fetcher now normalizes the author names according to the BibTeX-Standard [#4345](https://github.com/JabRef/jabref/issues/4345)
 - We added an option on the Linked File Viewer to rename the attached file of an entry directly on the JabRef. [#4844](https://github.com/JabRef/jabref/issues/4844)
 - We added an option in the preference dialog box that allows user to enable helpful tooltips.[#3599](https://github.com/JabRef/jabref/issues/3599)
+- We added a tool for extracting BibTeX entries from plain text. [#5206](https://github.com/JabRef/jabref/pull/5206)
 - We moved the dropdown menu for selecting the push-application from the toolbar into the external application preferences. [#674](https://github.com/JabRef/jabref/issues/674)
 - We removed the alphabetical ordering of the custom tabs and updated the error message when trying to create a general field with a name containing an illegal character. [#5019](https://github.com/JabRef/jabref/issues/5019)
 - We added a context menu to the bib(la)tex-source-editor to copy'n'paste. [#5007](https://github.com/JabRef/jabref/pull/5007)
diff --git a/build.gradle b/build.gradle
index 6ce97a88ba8..15c0633d027 100644
--- a/build.gradle
+++ b/build.gradle
@@ -94,7 +94,7 @@ dependencies {
     compile 'org.apache.pdfbox:fontbox:2.0.16'
     compile 'org.apache.pdfbox:xmpbox:2.0.16'
 
-    compile group: 'org.apache.tika', name: 'tika-parsers', version: '1.22'
+    compile group: 'org.apache.tika', name: 'tika-core', version: '1.22'
 
     // required for reading write-protected PDFs - see https://github.com/JabRef/jabref/pull/942#issuecomment-209252635
     compile 'org.bouncycastle:bcprov-jdk15on:1.62'
@@ -121,6 +121,7 @@ dependencies {
 
     compile 'com.google.guava:guava:28.0-jre'
 
+
     // JavaFX stuff
     compile 'de.jensd:fontawesomefx-commons:8.15'
     compile 'de.jensd:fontawesomefx-materialdesignfont:1.7.22-4'
diff --git a/docs/adr/0005-fully-support-utf8-only-for-latex-files.md b/docs/adr/0005-fully-support-utf8-only-for-latex-files.md
new file mode 100644
index 00000000000..6e066e8b7d8
--- /dev/null
+++ b/docs/adr/0005-fully-support-utf8-only-for-latex-files.md
@@ -0,0 +1,44 @@
+# Fully Support UTF-8 Only For LaTeX Files
+
+## Context and Problem Statement
+
+The feature [search for citations](https://github.com/JabRef/help.jabref.org/issues/210) displays the content of LaTeX files.
+The LaTeX files are text files and might be encoded arbitrarily.
+
+## Considered Options
+
+* Support UTF-8 encoding only
+* Support ASCII encoding only
+* Support (nearly) all encodings
+
+## Decision Outcome
+
+Chosen option: "Support UTF-8 encoding only", because comes out best (see below).
+
+### Positive Consequences
+
+* All content of LaTeX files are displayed in JabRef
+
+### Negative Consequences
+
+* When a LaTeX files is encoded in another encoding, the user might see strange characters in JabRef
+
+## Pros and Cons of the Options
+
+### Support UTF-8 encoding only
+
+* Good, because covers most tex file encodings
+* Good, because easy to implement
+* Bad, because does not support encodings used before around 2010
+
+### Support ASCII encoding only
+
+* Good, because easy to implement
+* Bad, because does not support any encoding at all
+
+### Support (nearly) all encodings
+
+* Good, because easy to implement
+* Bad, because it relies on Apache Tika's `CharsetDetector`, which resides in `tika-parsers`.
+  This causes issues during compilation (see https://github.com/JabRef/jabref/pull/3421#issuecomment-524532832).
+  Example: `error: module java.xml.bind reads package javax.activation from both java.activation and jakarta.activation`.
diff --git a/docs/adr/index.md b/docs/adr/index.md
index 7bbc5b8c4fc..de1818aea3c 100644
--- a/docs/adr/index.md
+++ b/docs/adr/index.md
@@ -9,6 +9,7 @@ This log lists the architectural decisions for JabRef.
 - [ADR-0002](0002-use-slf4j-for-logging.md) - Use slf4j together with log4j2 for logging
 - [ADR-0003](0003-use-gradle-as-build-tool.md) - Use Gradle as build tool
 - [ADR-0004](0004-use-mariadb-connector.md) - Use MariaDB Connector
+- [ADR-0005](0005-fully-support-utf8-only-for-latex-files.md) - Fully Support UTF-8 Only For LaTeX Files
 
 <!-- adrlogstop -->
 
diff --git a/src/main/java/org/jabref/gui/BasePanel.java b/src/main/java/org/jabref/gui/BasePanel.java
index aa0b1aa6188..189c58636ef 100644
--- a/src/main/java/org/jabref/gui/BasePanel.java
+++ b/src/main/java/org/jabref/gui/BasePanel.java
@@ -53,7 +53,6 @@
 import org.jabref.gui.mergeentries.MergeEntriesAction;
 import org.jabref.gui.mergeentries.MergeWithFetchedEntryAction;
 import org.jabref.gui.preview.CitationStyleToClipboardWorker;
-import org.jabref.gui.preview.PreviewPanel;
 import org.jabref.gui.specialfields.SpecialFieldDatabaseChangeListener;
 import org.jabref.gui.specialfields.SpecialFieldValueViewModel;
 import org.jabref.gui.specialfields.SpecialFieldViewModel;
@@ -122,7 +121,6 @@ public class BasePanel extends StackPane {
     // Keeps track of the string dialog if it is open.
     private final Map<Actions, BaseAction> actions = new HashMap<>();
     private final SidePaneManager sidePaneManager;
-    private final PreviewPanel preview;
     private final BasePanelPreferences preferences;
     private final ExternalFileTypes externalFileTypes;
 
@@ -179,8 +177,6 @@ public BasePanel(JabRefFrame frame, BasePanelPreferences preferences, BibDatabas
         this.getDatabase().registerListener(new UpdateTimestampListener(Globals.prefs));
 
         this.entryEditor = new EntryEditor(this, externalFileTypes);
-
-        this.preview = new PreviewPanel(getBibDatabaseContext(), this, dialogService, externalFileTypes, Globals.getKeyPrefs(), preferences.getPreviewPreferences());
     }
 
     @Subscribe
@@ -263,8 +259,6 @@ private void setupActions() {
         // The action for copying selected entries.
         actions.put(Actions.COPY, this::copy);
 
-        actions.put(Actions.PRINT_PREVIEW, new PrintPreviewAction());
-
         actions.put(Actions.CUT, this::cut);
 
         actions.put(Actions.DELETE, () -> delete(false));
@@ -358,19 +352,6 @@ private void setupActions() {
                     new SpecialFieldViewModel(SpecialField.READ_STATUS, undoManager).getSpecialFieldAction(status, this.frame));
         }
 
-        actions.put(Actions.TOGGLE_PREVIEW, () -> {
-            PreviewPreferences previewPreferences = Globals.prefs.getPreviewPreferences();
-            boolean enabled = !previewPreferences.isPreviewPanelEnabled();
-            PreviewPreferences newPreviewPreferences = previewPreferences.getBuilder()
-                                                                         .withPreviewPanelEnabled(enabled)
-                                                                         .build();
-            Globals.prefs.storePreviewPreferences(newPreviewPreferences);
-            setPreviewActive(enabled);
-        });
-
-        actions.put(Actions.NEXT_PREVIEW_STYLE, this::nextPreviewStyle);
-        actions.put(Actions.PREVIOUS_PREVIEW_STYLE, this::previousPreviewStyle);
-
         actions.put(Actions.SEND_AS_EMAIL, new SendAsEMailAction(frame));
 
         actions.put(Actions.WRITE_XMP, new WriteXMPAction(this)::execute);
@@ -679,7 +660,6 @@ private void createMainTable() {
                                                          .stream()
                                                          .findFirst()
                                                          .ifPresent(entry -> {
-                                                             preview.setEntry(entry);
                                                              entryEditor.setEntry(entry);
                                                          }));
 
@@ -816,9 +796,7 @@ private void instantiateSearchAutoCompleter() {
     }
 
     private void adjustSplitter() {
-        if (mode == BasePanelMode.SHOWING_PREVIEW) {
-            splitPane.setDividerPositions(Globals.prefs.getPreviewPreferences().getPreviewPanelDividerPosition().doubleValue());
-        } else if (mode == BasePanelMode.SHOWING_EDITOR) {
+        if (mode == BasePanelMode.SHOWING_EDITOR) {
             splitPane.setDividerPositions(preferences.getEntryEditorDividerPosition());
         }
     }
@@ -844,17 +822,11 @@ public void showAndEdit(BibEntry entry) {
     }
 
     private void showBottomPane(BasePanelMode newMode) {
-        Node pane;
-        switch (newMode) {
-            case SHOWING_PREVIEW:
-                pane = preview;
-                break;
-            case SHOWING_EDITOR:
-                pane = entryEditor;
-                break;
-            default:
-                throw new UnsupportedOperationException("new mode not recognized: " + newMode.name());
+        if (newMode != BasePanelMode.SHOWING_EDITOR) {
+            throw new UnsupportedOperationException("new mode not recognized: " + newMode.name());
         }
+        Node pane = entryEditor;
+
         if (splitPane.getItems().size() == 2) {
             splitPane.getItems().set(1, pane);
         } else {
@@ -870,23 +842,6 @@ private void showAndEdit() {
         }
     }
 
-    /**
-     * Sets the given preview panel as the bottom component in the split panel. Updates the mode to SHOWING_PREVIEW.
-     *
-     * @param entry The entry to show in the preview.
-     */
-    private void showPreview(BibEntry entry) {
-        showBottomPane(BasePanelMode.SHOWING_PREVIEW);
-
-        preview.setEntry(entry);
-    }
-
-    private void showPreview() {
-        if (!mainTable.getSelectedEntries().isEmpty()) {
-            showPreview(mainTable.getSelectedEntries().get(0));
-        }
-    }
-
     public void nextPreviewStyle() {
         cyclePreview(Globals.prefs.getPreviewPreferences().getPreviewCyclePosition() + 1);
     }
@@ -901,8 +856,7 @@ private void cyclePreview(int newPosition) {
                                                              .withPreviewCyclePosition(newPosition)
                                                              .build();
         Globals.prefs.storePreviewPreferences(previewPreferences);
-
-        preview.updateLayout(previewPreferences);
+        entryEditor.updatePreviewInTabs(previewPreferences);
     }
 
     /**
@@ -910,7 +864,7 @@ private void cyclePreview(int newPosition) {
      */
     public void closeBottomPane() {
         mode = BasePanelMode.SHOWING_NOTHING;
-        splitPane.getItems().removeAll(entryEditor, preview);
+        splitPane.getItems().remove(entryEditor);
     }
 
     /**
@@ -932,23 +886,17 @@ public void selectNextEntry() {
     /**
      * This method is called from an EntryEditor when it should be closed. We relay to the selection listener, which
      * takes care of the rest.
-     *
-     * @param editor The entry editor to close.
      */
-    public void entryEditorClosing(EntryEditor editor) {
-        if (Globals.prefs.getPreviewPreferences().isPreviewPanelEnabled()) {
-            showPreview(editor.getEntry());
-        } else {
-            closeBottomPane();
-        }
+    public void entryEditorClosing() {
+        closeBottomPane();
         mainTable.requestFocus();
     }
 
     /**
-     * Closes the entry editor or preview panel if it is showing the given entry.
+     * Closes the entry editor if it is showing the given entry.
      */
-    public void ensureNotShowingBottomPanel(BibEntry entry) {
-        if (((mode == BasePanelMode.SHOWING_EDITOR) && (entryEditor.getEntry() == entry)) || ((mode == BasePanelMode.SHOWING_PREVIEW))) {
+    private void ensureNotShowingBottomPanel(BibEntry entry) {
+        if (((mode == BasePanelMode.SHOWING_EDITOR) && (entryEditor.getEntry() == entry))) {
             closeBottomPane();
         }
     }
@@ -996,7 +944,7 @@ public BibDatabase getDatabase() {
         return bibDatabaseContext.getDatabase();
     }
 
-    public boolean showDeleteConfirmationDialog(int numberOfEntries) {
+    private boolean showDeleteConfirmationDialog(int numberOfEntries) {
         if (Globals.prefs.getBoolean(JabRefPreferences.CONFIRM_DELETE)) {
             String title = Localization.lang("Delete entry");
             String message = Localization.lang("Really delete the selected entry?");
@@ -1029,13 +977,7 @@ private void saveDividerLocation(Number position) {
             return;
         }
 
-        if (mode == BasePanelMode.SHOWING_PREVIEW) {
-            PreviewPreferences previewPreferences = Globals.prefs.getPreviewPreferences()
-                                                                 .getBuilder()
-                                                                 .withPreviewPanelDividerPosition(position)
-                                                                 .build();
-            Globals.prefs.storePreviewPreferences(previewPreferences);
-        } else if (mode == BasePanelMode.SHOWING_EDITOR) {
+        if (mode == BasePanelMode.SHOWING_EDITOR) {
             preferences.setEntryEditorDividerPosition(position.doubleValue());
         }
     }
@@ -1093,14 +1035,6 @@ public String formatOutputMessage(String start, int count) {
         return String.format("%s %d %s.", start, count, (count > 1 ? Localization.lang("entries") : Localization.lang("entry")));
     }
 
-    private void setPreviewActive(boolean enabled) {
-        if (enabled) {
-            showPreview();
-        } else {
-            preview.close();
-        }
-    }
-
     public CountingUndoManager getUndoManager() {
         return undoManager;
     }
@@ -1353,13 +1287,4 @@ public void action() {
             markChangedOrUnChanged();
         }
     }
-
-    private class PrintPreviewAction implements BaseAction {
-
-        @Override
-        public void action() {
-            showPreview();
-            preview.print();
-        }
-    }
 }
diff --git a/src/main/java/org/jabref/gui/BasePanelMode.java b/src/main/java/org/jabref/gui/BasePanelMode.java
index 2d6cb8daaec..9305439ad2b 100644
--- a/src/main/java/org/jabref/gui/BasePanelMode.java
+++ b/src/main/java/org/jabref/gui/BasePanelMode.java
@@ -6,7 +6,6 @@
 
 public enum BasePanelMode {
     SHOWING_NOTHING,
-    SHOWING_PREVIEW,
     SHOWING_EDITOR,
     WILL_SHOW_EDITOR
 }
diff --git a/src/main/java/org/jabref/gui/JabRefFrame.java b/src/main/java/org/jabref/gui/JabRefFrame.java
index 557e26c217f..04414186ea1 100644
--- a/src/main/java/org/jabref/gui/JabRefFrame.java
+++ b/src/main/java/org/jabref/gui/JabRefFrame.java
@@ -52,6 +52,7 @@
 import org.jabref.gui.actions.SimpleCommand;
 import org.jabref.gui.actions.StandardActions;
 import org.jabref.gui.auximport.NewSubLibraryAction;
+import org.jabref.gui.bibtexextractor.ExtractBibtexAction;
 import org.jabref.gui.bibtexkeypattern.BibtexKeyPatternAction;
 import org.jabref.gui.contentselector.ManageContentSelectorAction;
 import org.jabref.gui.copyfiles.CopyFilesAction;
@@ -772,6 +773,7 @@ private MenuBar createMenu() {
                 factory.createMenuItem(StandardActions.FIND_UNLINKED_FILES, new FindUnlinkedFilesAction(this, stateManager)),
                 factory.createMenuItem(StandardActions.WRITE_XMP, new OldDatabaseCommandWrapper(Actions.WRITE_XMP, this, stateManager)),
                 factory.createMenuItem(StandardActions.COPY_LINKED_FILES, new CopyFilesAction(stateManager, this.getDialogService())),
+                factory.createMenuItem(StandardActions.EXTRACT_BIBTEX, new ExtractBibtexAction(stateManager)),
 
                 new SeparatorMenuItem(),
 
@@ -806,7 +808,6 @@ private MenuBar createMenu() {
 
                     new SeparatorMenuItem(),
 
-                    factory.createCheckMenuItem(StandardActions.TOGGLE_PREVIEW, new OldDatabaseCommandWrapper(Actions.TOGGLE_PREVIEW, this, stateManager), Globals.prefs.getPreviewPreferences().isPreviewPanelEnabled()),
                     factory.createMenuItem(StandardActions.NEXT_PREVIEW_STYLE, new OldDatabaseCommandWrapper(Actions.NEXT_PREVIEW_STYLE, this, stateManager)),
                     factory.createMenuItem(StandardActions.PREVIOUS_PREVIEW_STYLE, new OldDatabaseCommandWrapper(Actions.PREVIOUS_PREVIEW_STYLE, this, stateManager)),
 
@@ -1225,6 +1226,11 @@ public EditAction(Actions command) {
             this.command = command;
         }
 
+        @Override
+        public String toString() {
+            return this.command.toString();
+        }
+
         @Override
         public void execute() {
             Node focusOwner = mainStage.getScene().getFocusOwner();
diff --git a/src/main/java/org/jabref/gui/actions/ActionFactory.java b/src/main/java/org/jabref/gui/actions/ActionFactory.java
index 60625d13a1a..f0d8ec8703f 100644
--- a/src/main/java/org/jabref/gui/actions/ActionFactory.java
+++ b/src/main/java/org/jabref/gui/actions/ActionFactory.java
@@ -74,7 +74,7 @@ private static Label getAssociatedNode(MenuItem menuItem) {
     }
 
     public MenuItem configureMenuItem(Action action, Command command, MenuItem menuItem) {
-        ActionUtils.configureMenuItem(new JabRefAction(action, command, keyBindingRepository), menuItem);
+        ActionUtils.configureMenuItem(new JabRefAction(action, command, keyBindingRepository, Sources.FromMenu), menuItem);
         setGraphic(menuItem, action);
 
         // Show tooltips
@@ -105,7 +105,7 @@ public MenuItem createMenuItem(Action action, Command command) {
     }
 
     public CheckMenuItem createCheckMenuItem(Action action, Command command, boolean selected) {
-        CheckMenuItem checkMenuItem = ActionUtils.createCheckMenuItem(new JabRefAction(action, command, keyBindingRepository));
+        CheckMenuItem checkMenuItem = ActionUtils.createCheckMenuItem(new JabRefAction(action, command, keyBindingRepository, Sources.FromMenu));
         checkMenuItem.setSelected(selected);
         setGraphic(checkMenuItem, action);
 
@@ -127,7 +127,7 @@ public Menu createSubMenu(Action action, MenuItem... children) {
     }
 
     public Button createIconButton(Action action, Command command) {
-        Button button = ActionUtils.createButton(new JabRefAction(action, command, keyBindingRepository), ActionUtils.ActionTextBehavior.HIDE);
+        Button button = ActionUtils.createButton(new JabRefAction(action, command, keyBindingRepository, Sources.FromButton), ActionUtils.ActionTextBehavior.HIDE);
 
         button.getStyleClass().setAll("icon-button");
 
@@ -140,7 +140,7 @@ public Button createIconButton(Action action, Command command) {
 
     public ButtonBase configureIconButton(Action action, Command command, ButtonBase button) {
         ActionUtils.configureButton(
-                new JabRefAction(action, command, keyBindingRepository),
+                                    new JabRefAction(action, command, keyBindingRepository, Sources.FromButton),
                 button,
                 ActionUtils.ActionTextBehavior.HIDE);
 
diff --git a/src/main/java/org/jabref/gui/actions/Actions.java b/src/main/java/org/jabref/gui/actions/Actions.java
index 5348e3394ae..b113f289632 100644
--- a/src/main/java/org/jabref/gui/actions/Actions.java
+++ b/src/main/java/org/jabref/gui/actions/Actions.java
@@ -49,7 +49,6 @@ public enum Actions {
     SELECT_ALL,
     SEND_AS_EMAIL,
     TOGGLE_GROUPS,
-    TOGGLE_PREVIEW,
     UNABBREVIATE,
     UNDO,
     WRITE_XMP,
diff --git a/src/main/java/org/jabref/gui/actions/JabRefAction.java b/src/main/java/org/jabref/gui/actions/JabRefAction.java
index de4c8983ecd..f04deb1157c 100644
--- a/src/main/java/org/jabref/gui/actions/JabRefAction.java
+++ b/src/main/java/org/jabref/gui/actions/JabRefAction.java
@@ -1,5 +1,8 @@
 package org.jabref.gui.actions;
 
+import java.util.HashMap;
+import java.util.Map;
+
 import javafx.beans.binding.Bindings;
 
 import org.jabref.Globals;
@@ -23,11 +26,23 @@ public JabRefAction(Action action, KeyBindingRepository keyBindingRepository) {
     }
 
     public JabRefAction(Action action, Command command, KeyBindingRepository keyBindingRepository) {
+        this(action, command, keyBindingRepository, null);
+    }
+
+    /**
+     * especially for the track execute when the action run the same function but from different source.
+     * @param source is a string contains the source, for example "button"
+     */
+    public JabRefAction(Action action, Command command, KeyBindingRepository keyBindingRepository, Sources source) {
         this(action, keyBindingRepository);
 
         setEventHandler(event -> {
             command.execute();
-            trackExecute(getActionName(action, command));
+            if (source == null) {
+                trackExecute(getActionName(action, command));
+            } else {
+                trackUserActionSource(getActionName(action, command), source);
+            }
         });
 
         disabledProperty().bind(command.executableProperty().not());
@@ -42,7 +57,12 @@ private String getActionName(Action action, Command command) {
         if (command.getClass().isAnonymousClass()) {
             return action.getText();
         } else {
-            return command.getClass().getSimpleName();
+            String commandName = command.getClass().getSimpleName();
+            if ((command instanceof OldDatabaseCommandWrapper) || (command instanceof OldCommandWrapper) || commandName.contains("EditAction")) {
+                return command.toString();
+            } else {
+                return commandName;
+            }
         }
     }
 
@@ -50,4 +70,12 @@ private void trackExecute(String actionName) {
         Globals.getTelemetryClient()
                .ifPresent(telemetryClient -> telemetryClient.trackEvent(actionName));
     }
+
+    private void trackUserActionSource(String actionName, Sources source) {
+        Map<String, String> properties = new HashMap<>();
+        Map<String, Double> measurements = new HashMap<>();
+        properties.put("Source", source.toString());
+
+        Globals.getTelemetryClient().ifPresent(telemetryClient -> telemetryClient.trackEvent(actionName, properties, measurements));
+    }
 }
diff --git a/src/main/java/org/jabref/gui/actions/OldCommandWrapper.java b/src/main/java/org/jabref/gui/actions/OldCommandWrapper.java
index 4a37747726a..028e0b153bb 100644
--- a/src/main/java/org/jabref/gui/actions/OldCommandWrapper.java
+++ b/src/main/java/org/jabref/gui/actions/OldCommandWrapper.java
@@ -48,4 +48,9 @@ public ReadOnlyDoubleProperty progressProperty() {
     public void setExecutable(boolean executable) {
         this.executable.bind(BindingsHelper.constantOf(executable));
     }
+
+    @Override
+    public String toString() {
+        return this.command.toString();
+    }
 }
diff --git a/src/main/java/org/jabref/gui/actions/OldDatabaseCommandWrapper.java b/src/main/java/org/jabref/gui/actions/OldDatabaseCommandWrapper.java
index 58a702e4190..bcd8301d690 100644
--- a/src/main/java/org/jabref/gui/actions/OldDatabaseCommandWrapper.java
+++ b/src/main/java/org/jabref/gui/actions/OldDatabaseCommandWrapper.java
@@ -51,6 +51,11 @@ public double getProgress() {
         return 0;
     }
 
+    @Override
+    public String toString() {
+        return this.command.toString();
+    }
+
     @Override
     public ReadOnlyDoubleProperty progressProperty() {
         return null;
diff --git a/src/main/java/org/jabref/gui/actions/Sources.java b/src/main/java/org/jabref/gui/actions/Sources.java
new file mode 100644
index 00000000000..55110553f65
--- /dev/null
+++ b/src/main/java/org/jabref/gui/actions/Sources.java
@@ -0,0 +1,7 @@
+package org.jabref.gui.actions;
+
+public enum Sources {
+    FromButton,
+    FromMenu
+
+}
diff --git a/src/main/java/org/jabref/gui/actions/StandardActions.java b/src/main/java/org/jabref/gui/actions/StandardActions.java
index 385e9a744a0..117b75ceffa 100644
--- a/src/main/java/org/jabref/gui/actions/StandardActions.java
+++ b/src/main/java/org/jabref/gui/actions/StandardActions.java
@@ -113,7 +113,6 @@ public enum StandardActions implements Action {
 
     EDIT_ENTRY(Localization.lang("Open entry editor"), IconTheme.JabRefIcons.EDIT_ENTRY, KeyBinding.EDIT_ENTRY),
     SHOW_PDF_VIEWER(Localization.lang("Open document viewer"), IconTheme.JabRefIcons.PDF_FILE),
-    TOGGLE_PREVIEW(Localization.lang("Entry preview"), IconTheme.JabRefIcons.TOGGLE_ENTRY_PREVIEW, KeyBinding.TOGGLE_ENTRY_PREVIEW),
     NEXT_PREVIEW_STYLE(Localization.lang("Next citation style"), KeyBinding.NEXT_PREVIEW_LAYOUT),
     PREVIOUS_PREVIEW_STYLE(Localization.lang("Previous citation style"), KeyBinding.PREVIOUS_PREVIEW_LAYOUT),
     SELECT_ALL(Localization.lang("Select all"), KeyBinding.SELECT_ALL),
@@ -138,6 +137,7 @@ public enum StandardActions implements Action {
     DOWNLOAD_FULL_TEXT(Localization.lang("Search full text documents online"), IconTheme.JabRefIcons.FILE_SEARCH, KeyBinding.DOWNLOAD_FULL_TEXT),
     CLEANUP_ENTRIES(Localization.lang("Cleanup entries"), IconTheme.JabRefIcons.CLEANUP_ENTRIES, KeyBinding.CLEANUP),
     SET_FILE_LINKS(Localization.lang("Automatically set file links"), KeyBinding.AUTOMATICALLY_LINK_FILES),
+    EXTRACT_BIBTEX(Localization.lang("Extract BibTeX from plain text")),
 
     HELP(Localization.lang("Online help"), IconTheme.JabRefIcons.HELP, KeyBinding.HELP),
     HELP_KEY_PATTERNS(Localization.lang("Help on key patterns"), IconTheme.JabRefIcons.HELP, KeyBinding.HELP),
diff --git a/src/main/java/org/jabref/gui/bibtexextractor/BibtexExtractor.java b/src/main/java/org/jabref/gui/bibtexextractor/BibtexExtractor.java
new file mode 100644
index 00000000000..6c6fc83eddd
--- /dev/null
+++ b/src/main/java/org/jabref/gui/bibtexextractor/BibtexExtractor.java
@@ -0,0 +1,170 @@
+package org.jabref.gui.bibtexextractor;
+
+import java.util.ArrayList;
+import java.util.Arrays;
+import java.util.Calendar;
+import java.util.List;
+import java.util.regex.Matcher;
+import java.util.regex.Pattern;
+
+import org.jabref.model.entry.BibEntry;
+import org.jabref.model.entry.field.StandardField;
+import org.jabref.model.entry.types.EntryType;
+import org.jabref.model.entry.types.StandardEntryType;
+
+public class BibtexExtractor {
+
+    private static final String AUTHOR_TAG = "[author_tag]";
+    private static final String URL_TAG = "[url_tag]";
+    private static final String YEAR_TAG = "[year_tag]";
+    private static final String PAGES_TAG = "[pages_tag]";
+
+    private static final String INITIALS_GROUP = "INITIALS";
+    private static final String LASTNAME_GROUP = "LASTNAME";
+
+    private static final Pattern URL_PATTERN = Pattern.compile(
+            "(?:^|[\\W])((ht|f)tp(s?):\\/\\/|www\\.)" +
+                    "(([\\w\\-]+\\.)+?([\\w\\-.~]+\\/?)*" +
+                    "[\\p{Alnum}.,%_=?&#\\-+()\\[\\]\\*$~@!:/{};']*)",
+            Pattern.CASE_INSENSITIVE | Pattern.MULTILINE | Pattern.DOTALL);
+
+    private static final Pattern YEAR_PATTERN = Pattern.compile(
+            "\\d{4}",
+            Pattern.CASE_INSENSITIVE | Pattern.MULTILINE | Pattern.DOTALL);
+
+    private static final Pattern AUTHOR_PATTERN = Pattern.compile(
+            "(?<" + LASTNAME_GROUP + ">\\p{Lu}\\w+),?\\s(?<" + INITIALS_GROUP + ">(\\p{Lu}\\.\\s){1,2})" +
+                    "\\s*(and|,|\\.)*",
+            Pattern.CASE_INSENSITIVE | Pattern.MULTILINE | Pattern.DOTALL);
+
+    private static final Pattern AUTHOR_PATTERN_2 = Pattern.compile(
+            "(?<" + INITIALS_GROUP + ">(\\p{Lu}\\.\\s){1,2})(?<" + LASTNAME_GROUP + ">\\p{Lu}\\w+)" +
+                    "\\s*(and|,|\\.)*",
+            Pattern.CASE_INSENSITIVE | Pattern.MULTILINE | Pattern.DOTALL);
+
+    private static final Pattern PAGES_PATTERN = Pattern.compile(
+            "(p.)?\\s?\\d+(-\\d+)?",
+            Pattern.CASE_INSENSITIVE | Pattern.MULTILINE | Pattern.DOTALL);
+
+    private final List<String> urls = new ArrayList<>();
+    private final List<String> authors = new ArrayList<>();
+    private String year = "";
+    private String pages = "";
+    private String title = "";
+    private boolean isArticle = true;
+    private String journalOrPublisher = "";
+
+    public BibEntry extract(String input) {
+        String inputWithoutUrls = findUrls(input);
+        String inputWithoutAuthors = findAuthors(inputWithoutUrls);
+        String inputWithoutYear = findYear(inputWithoutAuthors);
+        String inputWithoutPages = findPages(inputWithoutYear);
+        String nonParsed = findParts(inputWithoutPages);
+        return generateEntity(nonParsed);
+    }
+
+    private BibEntry generateEntity(String input) {
+        EntryType type = isArticle ? StandardEntryType.Article : StandardEntryType.Book;
+        BibEntry extractedEntity = new BibEntry(type);
+        extractedEntity.setField(StandardField.AUTHOR, String.join(" and ", authors));
+        extractedEntity.setField(StandardField.URL, String.join(", ", urls));
+        extractedEntity.setField(StandardField.YEAR, year);
+        extractedEntity.setField(StandardField.PAGES, pages);
+        extractedEntity.setField(StandardField.TITLE, title);
+        if (isArticle) {
+            extractedEntity.setField(StandardField.JOURNAL, journalOrPublisher);
+        } else {
+            extractedEntity.setField(StandardField.PUBLISHER, journalOrPublisher);
+        }
+        extractedEntity.setField(StandardField.COMMENT, input);
+        return extractedEntity;
+    }
+
+    private String findUrls(String input) {
+        Matcher matcher = URL_PATTERN.matcher(input);
+        while (matcher.find()) {
+            urls.add(input.substring(matcher.start(1), matcher.end()));
+        }
+        return fixSpaces(matcher.replaceAll(URL_TAG));
+    }
+
+    private String findYear(String input) {
+        Matcher matcher = YEAR_PATTERN.matcher(input);
+        while (matcher.find()) {
+            String yearCandidate = input.substring(matcher.start(), matcher.end());
+            int intYearCandidate = Integer.parseInt(yearCandidate);
+            if ((intYearCandidate > 1700) && (intYearCandidate <= Calendar.getInstance().get(Calendar.YEAR))) {
+                year = yearCandidate;
+                return fixSpaces(input.replace(year, YEAR_TAG));
+            }
+        }
+        return input;
+    }
+
+    private String findAuthors(String input) {
+        String currentInput = findAuthorsByPattern(input, AUTHOR_PATTERN);
+        return findAuthorsByPattern(currentInput, AUTHOR_PATTERN_2);
+    }
+
+    private String findAuthorsByPattern(String input, Pattern pattern) {
+        Matcher matcher = pattern.matcher(input);
+        while (matcher.find()) {
+            authors.add(GenerateAuthor(matcher.group(LASTNAME_GROUP), matcher.group(INITIALS_GROUP)));
+        }
+        return fixSpaces(matcher.replaceAll(AUTHOR_TAG));
+    }
+
+    private String GenerateAuthor(String lastName, String initials) {
+        return lastName + ", " + initials;
+    }
+
+    private String findPages(String input) {
+        Matcher matcher = PAGES_PATTERN.matcher(input);
+        if (matcher.find()) {
+            pages = input.substring(matcher.start(), matcher.end());
+        }
+        return fixSpaces(matcher.replaceFirst(PAGES_TAG));
+    }
+
+    private String fixSpaces(String input) {
+        return input.replaceAll("[,.!?;:]", "$0 ")
+                    .replaceAll("\\p{Lt}", " $0")
+                    .replaceAll("\\s+", " ").trim();
+    }
+
+    private String findParts(String input) {
+        ArrayList<String> lastParts = new ArrayList<>();
+        int afterAuthorsIndex = input.lastIndexOf(AUTHOR_TAG);
+        if (afterAuthorsIndex == -1) {
+            return input;
+        } else {
+            afterAuthorsIndex += AUTHOR_TAG.length();
+        }
+        int delimiterIndex = input.lastIndexOf("//");
+        if (delimiterIndex != -1) {
+            lastParts.add(input.substring(afterAuthorsIndex, delimiterIndex)
+                               .replace(YEAR_TAG, "")
+                               .replace(PAGES_TAG, ""));
+            lastParts.addAll(Arrays.asList(input.substring(delimiterIndex + 2).split(",|\\.")));
+        } else {
+            lastParts.addAll(Arrays.asList(input.substring(afterAuthorsIndex).split(",|\\.")));
+        }
+        int nonDigitParts = 0;
+        for (String part : lastParts) {
+            if (part.matches(".*\\d.*")) {
+                break;
+            }
+            nonDigitParts++;
+        }
+        if (nonDigitParts > 0) {
+            title = lastParts.get(0);
+        }
+        if (nonDigitParts > 1) {
+            journalOrPublisher = lastParts.get(1);
+        }
+        if (nonDigitParts > 2) {
+            isArticle = false;
+        }
+        return fixSpaces(input);
+    }
+}
diff --git a/src/main/java/org/jabref/gui/bibtexextractor/BibtexExtractorViewModel.java b/src/main/java/org/jabref/gui/bibtexextractor/BibtexExtractorViewModel.java
new file mode 100644
index 00000000000..8eb694bd692
--- /dev/null
+++ b/src/main/java/org/jabref/gui/bibtexextractor/BibtexExtractorViewModel.java
@@ -0,0 +1,42 @@
+package org.jabref.gui.bibtexextractor;
+
+import java.util.HashMap;
+import java.util.Map;
+
+import javafx.beans.property.SimpleStringProperty;
+import javafx.beans.property.StringProperty;
+
+import org.jabref.Globals;
+import org.jabref.model.database.BibDatabaseContext;
+import org.jabref.model.entry.BibEntry;
+import org.jabref.model.entry.types.EntryType;
+import org.jabref.model.entry.types.StandardEntryType;
+
+public class BibtexExtractorViewModel {
+
+    private final StringProperty inputTextProperty = new SimpleStringProperty("");
+    private final BibDatabaseContext bibdatabaseContext;
+
+    public BibtexExtractorViewModel(BibDatabaseContext bibdatabaseContext) {
+        this.bibdatabaseContext = bibdatabaseContext;
+    }
+
+    public StringProperty inputTextProperty() {
+        return this.inputTextProperty;
+    }
+
+    public void startExtraction() {
+
+        BibtexExtractor extractor = new BibtexExtractor();
+        BibEntry entity = extractor.extract(inputTextProperty.getValue());
+        this.bibdatabaseContext.getDatabase().insertEntry(entity);
+        trackNewEntry(StandardEntryType.Article);
+    }
+
+    private void trackNewEntry(EntryType type) {
+        Map<String, String> properties = new HashMap<>();
+        properties.put("EntryType", type.getName());
+
+        Globals.getTelemetryClient().ifPresent(client -> client.trackEvent("NewEntry", properties, new HashMap<>()));
+    }
+}
diff --git a/src/main/java/org/jabref/gui/bibtexextractor/ExtractBibtexAction.java b/src/main/java/org/jabref/gui/bibtexextractor/ExtractBibtexAction.java
new file mode 100644
index 00000000000..7610a6d7fa9
--- /dev/null
+++ b/src/main/java/org/jabref/gui/bibtexextractor/ExtractBibtexAction.java
@@ -0,0 +1,19 @@
+package org.jabref.gui.bibtexextractor;
+
+import org.jabref.gui.StateManager;
+import org.jabref.gui.actions.SimpleCommand;
+
+import static org.jabref.gui.actions.ActionHelper.needsDatabase;
+
+public class ExtractBibtexAction extends SimpleCommand {
+
+    public ExtractBibtexAction(StateManager stateManager) {
+        this.executable.bind(needsDatabase(stateManager));
+    }
+
+    @Override
+    public void execute() {
+        ExtractBibtexDialog dlg = new ExtractBibtexDialog();
+        dlg.showAndWait();
+    }
+}
diff --git a/src/main/java/org/jabref/gui/bibtexextractor/ExtractBibtexDialog.fxml b/src/main/java/org/jabref/gui/bibtexextractor/ExtractBibtexDialog.fxml
new file mode 100644
index 00000000000..053024c2a6a
--- /dev/null
+++ b/src/main/java/org/jabref/gui/bibtexextractor/ExtractBibtexDialog.fxml
@@ -0,0 +1,14 @@
+<?xml version="1.0" encoding="UTF-8"?>
+
+<?import javafx.scene.control.ButtonType?>
+<?import javafx.scene.control.DialogPane?>
+<?import javafx.scene.control.TextArea?>
+
+<DialogPane prefHeight="430.0" prefWidth="586.0" xmlns="http://javafx.com/javafx/8.0.171"
+            xmlns:fx="http://javafx.com/fxml/1" fx:controller="org.jabref.gui.bibtexextractor.ExtractBibtexDialog">
+    <content>
+        <TextArea fx:id="input" minHeight="-Infinity" prefHeight="350.0" prefWidth="586.0"/>
+    </content>
+    <ButtonType fx:id="extractButtonType" buttonData="OK_DONE" text="%Extract"/>
+    <ButtonType fx:constant="CANCEL"/>
+</DialogPane>
diff --git a/src/main/java/org/jabref/gui/bibtexextractor/ExtractBibtexDialog.java b/src/main/java/org/jabref/gui/bibtexextractor/ExtractBibtexDialog.java
new file mode 100644
index 00000000000..f4b7a1af81b
--- /dev/null
+++ b/src/main/java/org/jabref/gui/bibtexextractor/ExtractBibtexDialog.java
@@ -0,0 +1,50 @@
+package org.jabref.gui.bibtexextractor;
+
+import javax.inject.Inject;
+
+import javafx.fxml.FXML;
+import javafx.scene.control.Button;
+import javafx.scene.control.ButtonType;
+import javafx.scene.control.TextArea;
+import javafx.scene.control.Tooltip;
+
+import org.jabref.gui.StateManager;
+import org.jabref.gui.util.BaseDialog;
+import org.jabref.logic.l10n.Localization;
+import org.jabref.model.database.BibDatabaseContext;
+
+import com.airhacks.afterburner.views.ViewLoader;
+
+/**
+ * GUI Dialog for the feature "Extract BibTeX from plain text".
+ */
+public class ExtractBibtexDialog extends BaseDialog<Void> {
+
+    private final Button buttonExtract;
+    @FXML private TextArea input;
+    @FXML private ButtonType extractButtonType;
+    private BibtexExtractorViewModel viewModel;
+
+    @Inject private StateManager stateManager;
+
+    public ExtractBibtexDialog() {
+
+        ViewLoader.view(this)
+                  .load()
+                  .setAsDialogPane(this);
+
+        this.setTitle(Localization.lang("Input text to parse"));
+        buttonExtract = (Button) getDialogPane().lookupButton(extractButtonType);
+        buttonExtract.setTooltip(new Tooltip((Localization.lang("Starts the extraction of the BibTeX entry"))));
+        buttonExtract.setOnAction(e -> viewModel.startExtraction());
+        buttonExtract.disableProperty().bind(viewModel.inputTextProperty().isEmpty());
+    }
+
+    @FXML
+    private void initialize() {
+        BibDatabaseContext database = stateManager.getActiveDatabase().orElseThrow(() -> new NullPointerException("Database null"));
+        this.viewModel = new BibtexExtractorViewModel(database);
+
+        input.textProperty().bindBidirectional(viewModel.inputTextProperty());
+    }
+}
diff --git a/src/main/java/org/jabref/gui/cleanup/FieldFormatterCleanupsPanel.java b/src/main/java/org/jabref/gui/cleanup/FieldFormatterCleanupsPanel.java
index 12cd47ccf92..23917990ebe 100644
--- a/src/main/java/org/jabref/gui/cleanup/FieldFormatterCleanupsPanel.java
+++ b/src/main/java/org/jabref/gui/cleanup/FieldFormatterCleanupsPanel.java
@@ -4,6 +4,8 @@
 import java.util.Objects;
 import java.util.Optional;
 import java.util.Set;
+import java.util.TreeSet;
+import java.util.stream.Collectors;
 
 import javafx.beans.value.ChangeListener;
 import javafx.beans.value.ObservableValue;
@@ -40,18 +42,17 @@ public class FieldFormatterCleanupsPanel extends GridPane {
 
     private static final String DESCRIPTION = Localization.lang("Description") + ": ";
     private final CheckBox cleanupEnabled;
+    private final FieldFormatterCleanups defaultFormatters;
+    private final List<Formatter> availableFormatters;
     private FieldFormatterCleanups fieldFormatterCleanups;
     private ListView<FieldFormatterCleanup> actionsList;
     private ComboBox<Formatter> formattersCombobox;
-    private ComboBox<Field> selectFieldCombobox;
+    private ComboBox<String> selectFieldCombobox;
     private Button addButton;
     private Label descriptionAreaText;
     private Button removeButton;
     private Button resetButton;
     private Button recommendButton;
-
-    private final FieldFormatterCleanups defaultFormatters;
-    private final List<Formatter> availableFormatters;
     private ObservableList<FieldFormatterCleanup> actions;
 
     public FieldFormatterCleanupsPanel(String description, FieldFormatterCleanups defaultFormatters) {
@@ -104,7 +105,7 @@ private void buildLayout() {
         actionsList = new ListView<>(actions);
         actionsList.getSelectionModel().setSelectionMode(SelectionMode.SINGLE);
         new ViewModelListCellFactory<FieldFormatterCleanup>()
-                .withText(action -> action.getField() + ": " + action.getFormatter().getName())
+                .withText(action -> action.getField().getDisplayName() + ": " + action.getFormatter().getName())
                 .withStringTooltip(action -> action.getFormatter().getDescription())
                 .install(actionsList);
         add(actionsList, 1, 1, 3, 1);
@@ -164,7 +165,8 @@ private GridPane getSelectorPanel() {
         GridPane builder = new GridPane();
         Set<Field> fields = FieldFactory.getCommonFields();
         fields.add(InternalField.KEY_FIELD);
-        selectFieldCombobox = new ComboBox<>(FXCollections.observableArrayList(fields));
+        Set<String> fieldsString = fields.stream().map(Field::getDisplayName).sorted().collect(Collectors.toCollection(TreeSet::new));
+        selectFieldCombobox = new ComboBox<>(FXCollections.observableArrayList(fieldsString));
         selectFieldCombobox.setEditable(true);
         builder.add(selectFieldCombobox, 1, 1);
 
@@ -217,7 +219,7 @@ public boolean isDefaultSaveActions() {
 
     private FieldFormatterCleanup getFieldFormatterCleanup() {
         Formatter selectedFormatter = formattersCombobox.getValue();
-        Field field = selectFieldCombobox.getValue();
+        Field field = FieldFactory.parseField(selectFieldCombobox.getSelectionModel().getSelectedItem());
         return new FieldFormatterCleanup(field, selectedFormatter);
     }
 
@@ -242,5 +244,4 @@ public void changed(ObservableValue<? extends T> observable, T oldValue, T newVa
             setStatus(cleanupEnabled.isSelected());
         }
     }
-
 }
diff --git a/src/main/java/org/jabref/gui/entryeditor/EntryEditor.java b/src/main/java/org/jabref/gui/entryeditor/EntryEditor.java
index 4409d08d47e..dadcad8be9c 100644
--- a/src/main/java/org/jabref/gui/entryeditor/EntryEditor.java
+++ b/src/main/java/org/jabref/gui/entryeditor/EntryEditor.java
@@ -50,6 +50,7 @@
 import org.jabref.model.entry.field.Field;
 import org.jabref.model.util.FileUpdateMonitor;
 import org.jabref.preferences.PreferencesService;
+import org.jabref.preferences.PreviewPreferences;
 
 import com.airhacks.afterburner.views.ViewLoader;
 import org.fxmisc.easybind.EasyBind;
@@ -88,6 +89,7 @@ public class EntryEditor extends BorderPane {
     @Inject private StateManager stateManager;
     @Inject private FileUpdateMonitor fileMonitor;
     @Inject private CountingUndoManager undoManager;
+    private final List<EntryEditorTab> entryEditorTabs = new LinkedList<>();
 
     public EntryEditor(BasePanel panel, ExternalFileTypes externalFileTypes) {
         this.panel = panel;
@@ -235,7 +237,7 @@ private void setupKeyBindings() {
 
     @FXML
     public void close() {
-        panel.entryEditorClosing(EntryEditor.this);
+        panel.entryEditorClosing();
     }
 
     @FXML
@@ -261,40 +263,39 @@ private void navigateToNextEntry() {
     }
 
     private List<EntryEditorTab> createTabs() {
-        List<EntryEditorTab> tabs = new LinkedList<>();
 
         // Required fields
-        tabs.add(new RequiredFieldsTab(databaseContext, panel.getSuggestionProviders(), undoManager, dialogService));
+        entryEditorTabs.add(new RequiredFieldsTab(databaseContext, panel.getSuggestionProviders(), undoManager, dialogService));
 
         // Optional fields
-        tabs.add(new OptionalFieldsTab(databaseContext, panel.getSuggestionProviders(), undoManager, dialogService));
-        tabs.add(new OptionalFields2Tab(databaseContext, panel.getSuggestionProviders(), undoManager, dialogService));
-        tabs.add(new DeprecatedFieldsTab(databaseContext, panel.getSuggestionProviders(), undoManager, dialogService));
+        entryEditorTabs.add(new OptionalFieldsTab(databaseContext, panel.getSuggestionProviders(), undoManager, dialogService));
+        entryEditorTabs.add(new OptionalFields2Tab(databaseContext, panel.getSuggestionProviders(), undoManager, dialogService));
+        entryEditorTabs.add(new DeprecatedFieldsTab(databaseContext, panel.getSuggestionProviders(), undoManager, dialogService));
 
         // Other fields
-        tabs.add(new OtherFieldsTab(databaseContext, panel.getSuggestionProviders(), undoManager,
+        entryEditorTabs.add(new OtherFieldsTab(databaseContext, panel.getSuggestionProviders(), undoManager,
                 entryEditorPreferences.getCustomTabFieldNames(), dialogService));
 
         // General fields from preferences
         for (Map.Entry<String, Set<Field>> tab : entryEditorPreferences.getEntryEditorTabList().entrySet()) {
-            tabs.add(new UserDefinedFieldsTab(tab.getKey(), tab.getValue(), databaseContext, panel.getSuggestionProviders(), undoManager, dialogService));
+            entryEditorTabs.add(new UserDefinedFieldsTab(tab.getKey(), tab.getValue(), databaseContext, panel.getSuggestionProviders(), undoManager, dialogService));
         }
 
         // Special tabs
-        tabs.add(new MathSciNetTab());
-        tabs.add(new FileAnnotationTab(panel.getAnnotationCache()));
-        tabs.add(new RelatedArticlesTab(this, entryEditorPreferences, dialogService));
+        entryEditorTabs.add(new MathSciNetTab());
+        entryEditorTabs.add(new FileAnnotationTab(panel.getAnnotationCache()));
+        entryEditorTabs.add(new RelatedArticlesTab(this, entryEditorPreferences, dialogService));
 
         // Source tab
         sourceTab = new SourceTab(databaseContext, undoManager,
                 entryEditorPreferences.getLatexFieldFormatterPreferences(),
                 entryEditorPreferences.getImportFormatPreferences(), fileMonitor, dialogService, stateManager);
-        tabs.add(sourceTab);
+        entryEditorTabs.add(sourceTab);
 
         // LaTeX citations tab
-        tabs.add(new LatexCitationsTab(databaseContext, preferencesService, taskExecutor, dialogService));
+        entryEditorTabs.add(new LatexCitationsTab(databaseContext, preferencesService, taskExecutor, dialogService));
 
-        return tabs;
+        return entryEditorTabs;
     }
 
     private void recalculateVisibleTabs() {
@@ -402,4 +403,12 @@ public void setFocusToField(Field field) {
             }
         });
     }
+
+    public void updatePreviewInTabs(PreviewPreferences previewPreferences) {
+        for (Tab tab : this.entryEditorTabs) {
+            if (tab instanceof FieldsEditorTab) {
+                ((FieldsEditorTab) tab).previewPanel.updateLayout(previewPreferences);
+            }
+        }
+    }
 }
diff --git a/src/main/java/org/jabref/gui/entryeditor/FieldsEditorTab.java b/src/main/java/org/jabref/gui/entryeditor/FieldsEditorTab.java
index 9a2b7f35ead..ce226b512f8 100644
--- a/src/main/java/org/jabref/gui/entryeditor/FieldsEditorTab.java
+++ b/src/main/java/org/jabref/gui/entryeditor/FieldsEditorTab.java
@@ -6,7 +6,6 @@
 import java.util.List;
 import java.util.Map;
 import java.util.Optional;
-import java.util.Set;
 import java.util.SortedSet;
 import java.util.stream.Stream;
 
@@ -18,6 +17,7 @@
 import javafx.scene.Parent;
 import javafx.scene.control.Label;
 import javafx.scene.control.ScrollPane;
+import javafx.scene.control.SplitPane;
 import javafx.scene.layout.ColumnConstraints;
 import javafx.scene.layout.GridPane;
 import javafx.scene.layout.Priority;
@@ -27,21 +27,20 @@
 import org.jabref.Globals;
 import org.jabref.gui.DialogService;
 import org.jabref.gui.autocompleter.SuggestionProviders;
+import org.jabref.gui.externalfiletype.ExternalFileTypes;
 import org.jabref.gui.fieldeditors.FieldEditorFX;
 import org.jabref.gui.fieldeditors.FieldEditors;
 import org.jabref.gui.fieldeditors.FieldNameLabel;
-import org.jabref.logic.l10n.Localization;
+import org.jabref.gui.preview.PreviewPanel;
 import org.jabref.model.database.BibDatabaseContext;
 import org.jabref.model.entry.BibEntry;
 import org.jabref.model.entry.field.Field;
-import org.jabref.model.entry.field.FieldProperty;
-import org.jabref.model.entry.field.StandardField;
 
 /**
  * A single tab displayed in the EntryEditor holding several FieldEditors.
  */
 abstract class FieldsEditorTab extends EntryEditorTab {
-
+    public PreviewPanel previewPanel;
     protected final BibDatabaseContext databaseContext;
     private final Map<Field, FieldEditorFX> editors = new LinkedHashMap<>();
     private final boolean isCompressed;
@@ -100,7 +99,7 @@ private void setupPanel(BibEntry entry, boolean compressed, SuggestionProviders
         }
 
         ColumnConstraints columnExpand = new ColumnConstraints();
-        columnExpand.setPercentWidth(60);
+        columnExpand.setHgrow(Priority.ALWAYS);
 
         ColumnConstraints columnDoNotContract = new ColumnConstraints();
         columnDoNotContract.setMinWidth(Region.USE_PREF_SIZE);
@@ -157,27 +156,6 @@ private void setCompressedRowLayout(GridPane gridPane, int rows) {
         }
     }
 
-    private String getPrompt(Field field) {
-        Set<FieldProperty> fieldProperties = field.getProperties();
-        if (fieldProperties.contains(FieldProperty.PERSON_NAMES)) {
-            return String.format("%1$s and %1$s and others", Localization.lang("Firstname Lastname"));
-        } else if (fieldProperties.contains(FieldProperty.DOI)) {
-            return "10.ORGANISATION/ID";
-        } else if (fieldProperties.contains(FieldProperty.DATE)) {
-            return "YYYY-MM-DD";
-        }
-
-        if (StandardField.YEAR.equals(field)) {
-            return "YYYY";
-        } else if (StandardField.MONTH.equals(field)) {
-            return "MM or #mmm#";
-        } else if (StandardField.URL.equals(field)) {
-            return "https://";
-        }
-
-        return "";
-    }
-
     /**
      * Focuses the given field.
      */
@@ -211,6 +189,8 @@ protected void bindToEntry(BibEntry entry) {
         initPanel();
         setupPanel(entry, isCompressed, suggestionProviders, undoManager);
 
+        previewPanel.setEntry(entry);
+
         Platform.runLater(() -> {
             // Restore focus to field (run this async so that editor is already initialized correctly)
             selectedFieldName.ifPresent(this::requestFocus);
@@ -228,6 +208,8 @@ private void initPanel() {
             gridPane = new GridPane();
             gridPane.getStyleClass().add("editorPane");
 
+            previewPanel = new PreviewPanel(databaseContext, null, dialogService, ExternalFileTypes.getInstance(), Globals.getKeyPrefs(), Globals.prefs.getPreviewPreferences());
+
             // Warp everything in a scroll-pane
             ScrollPane scrollPane = new ScrollPane();
             scrollPane.setHbarPolicy(ScrollPane.ScrollBarPolicy.NEVER);
@@ -236,7 +218,9 @@ private void initPanel() {
             scrollPane.setFitToWidth(true);
             scrollPane.setFitToHeight(true);
 
-            setContent(scrollPane);
+            SplitPane container = new SplitPane(scrollPane, previewPanel);
+
+            setContent(container);
         }
     }
 }
diff --git a/src/main/java/org/jabref/gui/keyboard/KeyBinding.java b/src/main/java/org/jabref/gui/keyboard/KeyBinding.java
index 43c55b7d444..41cdde8a12b 100644
--- a/src/main/java/org/jabref/gui/keyboard/KeyBinding.java
+++ b/src/main/java/org/jabref/gui/keyboard/KeyBinding.java
@@ -84,7 +84,6 @@ public enum KeyBinding {
     STRING_DIALOG_ADD_STRING("String dialog, add string", Localization.lang("String dialog, add string"), "ctrl+N", KeyBindingCategory.FILE),
     STRING_DIALOG_REMOVE_STRING("String dialog, remove string", Localization.lang("String dialog, remove string"), "shift+DELETE", KeyBindingCategory.FILE),
     SYNCHRONIZE_FILES("Synchronize files", Localization.lang("Synchronize files"), "ctrl+shift+F7", KeyBindingCategory.QUALITY),
-    TOGGLE_ENTRY_PREVIEW("Toggle entry preview", Localization.lang("Toggle entry preview"), "alt+2", KeyBindingCategory.VIEW),
     TOGGLE_GROUPS_INTERFACE("Toggle groups interface", Localization.lang("Toggle groups interface"), "alt+3", KeyBindingCategory.VIEW),
     UNABBREVIATE("Unabbreviate", Localization.lang("Unabbreviate"), "ctrl+alt+shift+A", KeyBindingCategory.TOOLS),
     UNDO("Undo", Localization.lang("Undo"), "ctrl+Z", KeyBindingCategory.EDIT),
diff --git a/src/main/java/org/jabref/gui/preview/PreviewPanel.java b/src/main/java/org/jabref/gui/preview/PreviewPanel.java
index 790aae4c1d6..c4fbde25a1e 100644
--- a/src/main/java/org/jabref/gui/preview/PreviewPanel.java
+++ b/src/main/java/org/jabref/gui/preview/PreviewPanel.java
@@ -57,12 +57,12 @@ public PreviewPanel(BibDatabaseContext database, BasePanel basePanel, DialogServ
             previewView.startFullDrag();
 
             Dragboard dragboard = previewView.startDragAndDrop(TransferMode.COPY);
-                ClipboardContent content = new ClipboardContent();
+            ClipboardContent content = new ClipboardContent();
             content.putHtml(previewView.getSelectionHtmlContent());
-                dragboard.setContent(content);
+            dragboard.setContent(content);
 
-                event.consume();
-            });
+            event.consume();
+        });
 
         previewView.setOnDragOver(event -> {
             if (event.getDragboard().hasFiles()) {
@@ -93,7 +93,6 @@ public PreviewPanel(BibDatabaseContext database, BasePanel basePanel, DialogServ
 
             event.setDropCompleted(success);
             event.consume();
-
         });
         this.getChildren().add(previewView);
 
@@ -142,19 +141,21 @@ private ContextMenu createPopupMenu() {
         copyPreview.setOnAction(event -> previewView.copyPreviewToClipBoard());
         MenuItem printEntryPreview = new MenuItem(Localization.lang("Print entry preview"), IconTheme.JabRefIcons.PRINTED.getGraphicNode());
         printEntryPreview.setOnAction(event -> previewView.print());
+        /* Deleted since it does not work anymore. Needs refactoring.
         MenuItem previousPreviewLayout = new MenuItem(Localization.lang("Previous preview layout"));
         previousPreviewLayout.setAccelerator(keyBindingRepository.getKeyCombination(KeyBinding.PREVIOUS_PREVIEW_LAYOUT));
         previousPreviewLayout.setOnAction(event -> basePanel.previousPreviewStyle());
         MenuItem nextPreviewLayout = new MenuItem(Localization.lang("Next preview layout"));
         nextPreviewLayout.setAccelerator(keyBindingRepository.getKeyCombination(KeyBinding.NEXT_PREVIEW_LAYOUT));
         nextPreviewLayout.setOnAction(event -> basePanel.nextPreviewStyle());
+        */
 
         ContextMenu menu = new ContextMenu();
         menu.getItems().add(copyPreview);
         menu.getItems().add(printEntryPreview);
         menu.getItems().add(new SeparatorMenuItem());
-        menu.getItems().add(nextPreviewLayout);
-        menu.getItems().add(previousPreviewLayout);
+        // menu.getItems().add(nextPreviewLayout);
+        // menu.getItems().add(previousPreviewLayout);
         return menu;
     }
 
diff --git a/src/main/java/org/jabref/logic/texparser/DefaultTexParser.java b/src/main/java/org/jabref/logic/texparser/DefaultTexParser.java
index 0d6414892ef..de56646261e 100644
--- a/src/main/java/org/jabref/logic/texparser/DefaultTexParser.java
+++ b/src/main/java/org/jabref/logic/texparser/DefaultTexParser.java
@@ -1,10 +1,13 @@
 package org.jabref.logic.texparser;
 
 import java.io.IOException;
+import java.io.InputStream;
+import java.io.InputStreamReader;
 import java.io.LineNumberReader;
 import java.io.Reader;
 import java.io.UncheckedIOException;
 import java.nio.channels.ClosedChannelException;
+import java.nio.charset.StandardCharsets;
 import java.nio.file.Files;
 import java.nio.file.Path;
 import java.nio.file.Paths;
@@ -18,7 +21,6 @@
 import org.jabref.model.texparser.TexParser;
 import org.jabref.model.texparser.TexParserResult;
 
-import org.apache.tika.parser.txt.CharsetDetector;
 import org.slf4j.Logger;
 import org.slf4j.LoggerFactory;
 
@@ -78,7 +80,8 @@ public TexParserResult parse(List<Path> texFiles) {
             }
 
             try (
-                    Reader reader = new CharsetDetector().setText(Files.readAllBytes(file)).detect().getReader();
+                    InputStream inputStream = Files.newInputStream(file);
+                    Reader reader = new InputStreamReader(inputStream, StandardCharsets.UTF_8);
                     LineNumberReader lineNumberReader = new LineNumberReader(reader)) {
                 for (String line = lineNumberReader.readLine(); line != null; line = lineNumberReader.readLine()) {
                     // Skip comments and blank lines.
diff --git a/src/main/java/org/jabref/model/bibtexkeypattern/AbstractBibtexKeyPattern.java b/src/main/java/org/jabref/model/bibtexkeypattern/AbstractBibtexKeyPattern.java
index e533ddd7bcc..9eafc1bdc04 100644
--- a/src/main/java/org/jabref/model/bibtexkeypattern/AbstractBibtexKeyPattern.java
+++ b/src/main/java/org/jabref/model/bibtexkeypattern/AbstractBibtexKeyPattern.java
@@ -51,15 +51,6 @@ public int hashCode() {
         return Objects.hash(defaultPattern, data);
     }
 
-    /**
-     * Remove a Bibtex key pattern from the BibtexKeyPattern.
-     *
-     * @param type a <code>String</code>
-     */
-    public void removeBibtexKeyPattern(String type) {
-        data.remove(type);
-    }
-
     /**
      * Gets an object for a desired key from this BibtexKeyPattern or one of it's
      * parents (in the case of DatabaseBibtexKeyPattern). This method first tries to obtain the object from this
diff --git a/src/main/resources/l10n/JabRef_en.properties b/src/main/resources/l10n/JabRef_en.properties
index be32af907c7..5ddfa400384 100644
--- a/src/main/resources/l10n/JabRef_en.properties
+++ b/src/main/resources/l10n/JabRef_en.properties
@@ -931,7 +931,6 @@ This\ operation\ requires\ one\ or\ more\ entries\ to\ be\ selected.=This operat
 This\ setting\ may\ be\ changed\ in\ preferences\ at\ any\ time.=This setting may be changed in preferences at any time.
 Timezone\ (Provides\ for\ better\ recommendations\ by\ indicating\ the\ time\ of\ day\ the\ request\ is\ being\ made.)=Timezone (Provides for better recommendations by indicating the time of day the request is being made.)
 Time\ stamp=Time stamp
-Toggle\ entry\ preview=Toggle entry preview
 Toggle\ groups\ interface=Toggle groups interface
 
 Trim\ all\ whitespace\ characters\ in\ the\ field\ content.=Trim all whitespace characters in the field content.
@@ -1825,7 +1824,6 @@ Backup\ found=Backup found
 A\ backup\ file\ for\ '%0'\ was\ found.=A backup file for '%0' was found.
 This\ could\ indicate\ that\ JabRef\ did\ not\ shut\ down\ cleanly\ last\ time\ the\ file\ was\ used.=This could indicate that JabRef did not shut down cleanly last time the file was used.
 Do\ you\ want\ to\ recover\ the\ library\ from\ the\ backup\ file?=Do you want to recover the library from the backup file?
-Firstname\ Lastname=Firstname Lastname
 
 Recommended\ for\ %0=Recommended for %0
 Show\ 'Related\ Articles'\ tab=Show 'Related Articles' tab
@@ -2067,6 +2065,11 @@ Accept\ changes=Accept changes
 Dismiss\ changes=Dismiss changes
 The\ library\ has\ been\ modified\ by\ another\ program.=The library has been modified by another program.
 
+Extract=Extract
+Extract\ BibTeX\ from\ plain\ text= Extract BibTeX from plain text
+Input\ text\ to\ parse=Input text to parse
+Starts\ the\ extraction\ of\ the\ BibTeX\ entry=Starts the extraction of the BibTeX entry
+
 Execute\ command=Execute command
 Open\ File\ Browser=Open File Browser
 Use\ default\ file\ browser=Use default file browser
diff --git a/src/test/java/org/jabref/logic/texparser/DefaultTexParserTest.java b/src/test/java/org/jabref/logic/texparser/DefaultTexParserTest.java
index a0638550877..1d4047a577f 100644
--- a/src/test/java/org/jabref/logic/texparser/DefaultTexParserTest.java
+++ b/src/test/java/org/jabref/logic/texparser/DefaultTexParserTest.java
@@ -12,6 +12,7 @@
 import static org.junit.jupiter.api.Assertions.assertEquals;
 
 public class DefaultTexParserTest {
+
     private final static String DARWIN = "Darwin1888";
     private final static String EINSTEIN = "Einstein1920";
     private final static String NEWTON = "Newton1999";
@@ -90,7 +91,9 @@ public void testFileEncodingIso88591() throws URISyntaxException {
         TexParserResult expectedParserResult = new TexParserResult();
 
         expectedParserResult.getFileList().add(texFile);
-        expectedParserResult.addKey("anykey", texFile, 1, 32, 45, "Danach wir anschließend mittels \\cite{anykey}.");
+        // The character � is on purpose - we cannot use Apache Tika's CharsetDetector - see ADR-0005
+        expectedParserResult
+                .addKey("anykey", texFile, 1, 32, 45, "Danach wir anschlie�end mittels \\cite{anykey}.");
 
         assertEquals(expectedParserResult, parserResult);
     }
@@ -103,7 +106,9 @@ public void testFileEncodingIso885915() throws URISyntaxException {
         TexParserResult expectedParserResult = new TexParserResult();
 
         expectedParserResult.getFileList().add(texFile);
-        expectedParserResult.addKey("anykey", texFile, 1, 32, 45, "Danach wir anschließend mittels \\cite{anykey}.");
+        // The character � is on purpose - we cannot use Apache Tika's CharsetDetector - see ADR-0005
+        expectedParserResult
+                .addKey("anykey", texFile, 1, 32, 45, "Danach wir anschlie�end mittels \\cite{anykey}.");
 
         assertEquals(expectedParserResult, parserResult);
     }
@@ -114,13 +119,17 @@ public void testFileEncodingForThreeFiles() throws URISyntaxException {
         Path texFile2 = Paths.get(DefaultTexParserTest.class.getResource("iso-8859-1.tex").toURI());
         Path texFile3 = Paths.get(DefaultTexParserTest.class.getResource("iso-8859-15.tex").toURI());
 
-        TexParserResult parserResult = new DefaultTexParser().parse(Arrays.asList(texFile, texFile2, texFile3));
+        TexParserResult parserResult = new DefaultTexParser()
+                .parse(Arrays.asList(texFile, texFile2, texFile3));
         TexParserResult expectedParserResult = new TexParserResult();
 
         expectedParserResult.getFileList().addAll(Arrays.asList(texFile, texFile2, texFile3));
-        expectedParserResult.addKey("anykey", texFile, 1, 32, 45, "Danach wir anschließend mittels \\cite{anykey}.");
-        expectedParserResult.addKey("anykey", texFile2, 1, 32, 45, "Danach wir anschließend mittels \\cite{anykey}.");
-        expectedParserResult.addKey("anykey", texFile3, 1, 32, 45, "Danach wir anschließend mittels \\cite{anykey}.");
+        expectedParserResult
+                .addKey("anykey", texFile, 1, 32, 45, "Danach wir anschließend mittels \\cite{anykey}.");
+        expectedParserResult
+                .addKey("anykey", texFile2, 1, 32, 45, "Danach wir anschlie�end mittels \\cite{anykey}.");
+        expectedParserResult
+                .addKey("anykey", texFile3, 1, 32, 45, "Danach wir anschlie�end mittels \\cite{anykey}.");
 
         assertEquals(expectedParserResult, parserResult);
     }
diff --git a/src/test/resources/org/jabref/logic/importer/fileformat/RisImporterTest1.bib b/src/test/resources/org/jabref/logic/importer/fileformat/RisImporterTest1.bib
index b5be8e0e474..3ee23e1f165 100644
--- a/src/test/resources/org/jabref/logic/importer/fileformat/RisImporterTest1.bib
+++ b/src/test/resources/org/jabref/logic/importer/fileformat/RisImporterTest1.bib
@@ -11,7 +11,7 @@ @phdthesis{
   issn = {kmptns},
   journal = {kmptnd},
   keywords = {keyword0, keyword1},
-  month = {#sep#},
+  month = sep,
   pages = {193--194},
   publisher = {kmptnv},
   refid = {123456 sxdbgsd},
diff --git a/src/test/resources/org/jabref/logic/importer/fileformat/RisImporterTest8_date.bib b/src/test/resources/org/jabref/logic/importer/fileformat/RisImporterTest8_date.bib
index 8c200fa3c7a..a601bb2a3c1 100644
--- a/src/test/resources/org/jabref/logic/importer/fileformat/RisImporterTest8_date.bib
+++ b/src/test/resources/org/jabref/logic/importer/fileformat/RisImporterTest8_date.bib
@@ -4,7 +4,7 @@ @article{
   doi = {10.1063/1.1954747},
   issn = {0021-9606},
   journal = {J. Chem. Phys.},
-  month = {#jul#},
+  month = jul,
   number = {3},
   pages = {034708},
   publisher = {American Institute of Physics},
diff --git a/src/test/resources/testbib/complex.bib b/src/test/resources/testbib/complex.bib
index 414e02a489e..b127ad22e1f 100644
--- a/src/test/resources/testbib/complex.bib
+++ b/src/test/resources/testbib/complex.bib
@@ -138,15 +138,16 @@ @InProceedings{1233448
   author     = {Cheryl Hinds and Chinedu Ekwueme},
   title      = {Increasing security and usability of computer systems with graphical passwords},
   booktitle  = {ACM-SE 45: Proceedings of the 45th annual southeast regional conference},
-  year       = {2007},
   publisher  = {ACM},
   location   = {Winston-Salem, North Carolina},
   isbn       = {978-1-59593-629-5},
   pages      = {529--530},
   doi        = {http://doi.acm.org/10.1145/1233341.1233448},
+  abstract   = {Lorem ipsum dolor sit amet, consectetur adipiscing elit. Donec id bibendum magna, ac tristique nulla. Aliquam ut vulputate velit, ac vulputate leo. Sed malesuada nisi eget lacus rhoncus, et feugiat libero suscipit. Sed vitae ultricies diam. Phasellus arcu tellus, scelerisque a lorem quis, molestie fermentum mi. Morbi nibh ante, sodales at nisl nec, tincidunt dapibus leo. Praesent auctor egestas commodo. Cras elit erat, accumsan a felis at, malesuada iaculis risus. Nunc in tincidunt metus. },
   address    = {New York, NY, USA},
   bdsk-url-1 = {http://doi.acm.org/10.1145/1233341.1233448},
   groups     = {StaticGroup},
+  year       = {2007},
 }
 
 @Article{10250999,