diff --git a/.crev-config.yaml b/.crev-config.yaml
index 0a48f07..f3deebc 100644
--- a/.crev-config.yaml
+++ b/.crev-config.yaml
@@ -1,7 +1,9 @@
 # Configuration for the crev tool
 # specify your Code AI Review API key (necessary for review command)
-api-key: "dcds"
-# specify the prefixes of files and directories to ignore (paths starting with . are always ignored)
-ignore: [tests, build, readme.md, LICENSE, dist]
-# specify the extensions of files to include (by default all files are included)
-extensions: # ex. [.go, .py, .js]
+api-key: # Fill in your CREV API key here
+# specify the prefixes of files and directories to ignore (by default common configuration files are ignored)
+ignore-pre: # ex. [tests, readme.md, scripts]
+# specify the extensions of files to ignore 
+ignore-ext: [.go, .py, .js, .txt]
+# specify the extensions of files to include 
+include-ext: # ex. [.go, .py, .js]
diff --git a/cmd/generate.go b/cmd/generate.go
index 559f098..886af85 100644
--- a/cmd/generate.go
+++ b/cmd/generate.go
@@ -77,11 +77,16 @@ crev generate --ignore=tests,readme.md --extensions=go,py,js
 
 		// get all file paths from the root directory
 		rootDir := "."
-		prefixesToFilter := viper.GetStringSlice("ignore")
-		// always ignore directories starting with "."
+
+		prefixesToFilter := viper.GetStringSlice("ignore-pre")
 		prefixesToFilter = append(prefixesToFilter, standardPrefixesToFilter...)
-		extensionsToKeep := viper.GetStringSlice("extensions")
-		filePaths, err := files.GetAllFilePaths(rootDir, prefixesToFilter, extensionsToKeep)
+
+		extensionsToIgnore := viper.GetStringSlice("ignore-ext")
+
+		extensionsToKeep := viper.GetStringSlice("include-ext")
+
+		filePaths, err := files.GetAllFilePaths(rootDir, prefixesToFilter,
+			extensionsToKeep, extensionsToIgnore)
 		if err != nil {
 			log.Fatal(err)
 			return
@@ -122,13 +127,19 @@ crev generate --ignore=tests,readme.md --extensions=go,py,js
 
 func init() {
 	rootCmd.AddCommand(generateCmd)
-	generateCmd.Flags().StringSlice("ignore", []string{}, "Comma-separated prefixes of paths to ignore")
-	generateCmd.Flags().StringSlice("extensions", []string{}, "Comma-separated file extensions to include. (default: all files)")
-	err := viper.BindPFlag("ignore", generateCmd.Flags().Lookup("ignore"))
+	// TODO Fix description with defaults
+	generateCmd.Flags().StringSlice("ignore-pre", []string{}, "Comma-separated prefixes of paths to ignore")
+	generateCmd.Flags().StringSlice("ignore-ext", []string{}, "Comma-separated file extensions to ignore")
+	generateCmd.Flags().StringSlice("include-ext", []string{}, "Comma-separated file extensions to include.")
+	err := viper.BindPFlag("ignore-pre", generateCmd.Flags().Lookup("ignore-pre"))
+	if err != nil {
+		log.Fatal(err)
+	}
+	err = viper.BindPFlag("ignore-ext", generateCmd.Flags().Lookup("ignore-ext"))
 	if err != nil {
 		log.Fatal(err)
 	}
-	err = viper.BindPFlag("extensions", generateCmd.Flags().Lookup("extensions"))
+	err = viper.BindPFlag("include-ext", generateCmd.Flags().Lookup("include-ext"))
 	if err != nil {
 		log.Fatal(err)
 	}
diff --git a/cmd/init.go b/cmd/init.go
index e2b9fbe..4ba4d18 100644
--- a/cmd/init.go
+++ b/cmd/init.go
@@ -14,9 +14,11 @@ var defaultConfig = []byte(`# Configuration for the crev tool
 # specify your Code AI Review API key (necessary for review command)
 api-key: # Fill in your CREV API key here
 # specify the prefixes of files and directories to ignore (by default common configuration files are ignored)
-ignore: # ex. [tests, readme.md, scripts]
-# specify the extensions of files to include (by default all files are included)
-extensions: # ex. [.go, .py, .js]
+ignore-pre: # ex. [tests, readme.md, scripts]
+# specify the extensions of files to ignore 
+ignore-ext: # ex. [.go, .py, .js]
+# specify the extensions of files to include 
+include-ext: # ex. [.go, .py, .js]
 `)
 
 var initCmd = &cobra.Command{
diff --git a/internal/files/reading.go b/internal/files/reading.go
index ea71c87..46bf57e 100644
--- a/internal/files/reading.go
+++ b/internal/files/reading.go
@@ -11,7 +11,8 @@ import (
 
 // Given a root path returns all the file paths in the root directory
 // and its subdirectories.
-func GetAllFilePaths(root string, prefixesToFilter []string, extensionsToKeep []string) ([]string, error) {
+func GetAllFilePaths(root string, prefixesToFilter []string, extensionsToKeep []string,
+	extensionsToIgnore []string) ([]string, error) {
 	var filePaths []string
 	err := filepath.WalkDir(root, func(path string, d fs.DirEntry, err error) error {
 		if err != nil {
@@ -30,6 +31,12 @@ func GetAllFilePaths(root string, prefixesToFilter []string, extensionsToKeep []
 				return nil
 			}
 		}
+		// Filter out the files that have the extensions in extensionsToFilter.
+		for _, ext := range extensionsToIgnore {
+			if filepath.Ext(path) == ext {
+				return nil
+			}
+		}
 		// Process file based on extension filters.
 		if d.IsDir() || len(extensionsToKeep) == 0 {
 			filePaths = append(filePaths, path)
diff --git a/tests/files/reading_test.go b/tests/files/reading_test.go
index 7094c06..04d3556 100644
--- a/tests/files/reading_test.go
+++ b/tests/files/reading_test.go
@@ -32,7 +32,7 @@ func TestGetAllFilePaths(t *testing.T) {
 		filepath.Join(subDir, "file2.txt"),
 	}
 
-	filePaths, err := files.GetAllFilePaths(rootDir, nil, nil)
+	filePaths, err := files.GetAllFilePaths(rootDir, nil, nil, nil)
 	if err != nil {
 		t.Fatalf("expected no error, got %v", err)
 	}
@@ -88,7 +88,7 @@ func TestGetAllFilePathsWithPrefixFilter(t *testing.T) {
 		filepath.Join(subDir2, "file3.go"),
 	}
 	// filter out full path prefix subDir1
-	filePaths, err := files.GetAllFilePaths(rootDir, []string{"subdir_1"}, nil)
+	filePaths, err := files.GetAllFilePaths(rootDir, []string{"subdir_1"}, nil, nil)
 
 	if err != nil {
 		t.Fatalf("expected no error, got %v", err)
@@ -146,7 +146,7 @@ func TestGetAllFilePathsWithPrefixFilterNestedDir(t *testing.T) {
 		filepath.Join(subDir3, "file2.go"),
 	}
 
-	filePaths, err := files.GetAllFilePaths(rootDir, []string{"."}, nil)
+	filePaths, err := files.GetAllFilePaths(rootDir, []string{"."}, nil, nil)
 
 	if err != nil {
 		t.Fatalf("expected no error, got %v", err)
@@ -170,7 +170,7 @@ func TestGetAllFilePathsWithPrefixFilterNestedDir(t *testing.T) {
 	}
 }
 
-// Tests the functionality to filter out text extensions.
+// Tests the functionality to include only files with specific extensions.
 func TestGetAllFilePathsWithExtensionFilter(t *testing.T) {
 	rootDir := t.TempDir()
 
@@ -204,7 +204,7 @@ func TestGetAllFilePathsWithExtensionFilter(t *testing.T) {
 		subDir2,
 	}
 
-	filePaths, err := files.GetAllFilePaths(rootDir, nil, []string{".go"})
+	filePaths, err := files.GetAllFilePaths(rootDir, nil, []string{".go"}, nil)
 	if err != nil {
 		t.Fatalf("expected no error, got %v", err)
 	}
@@ -227,6 +227,99 @@ func TestGetAllFilePathsWithExtensionFilter(t *testing.T) {
 	}
 }
 
+// Tests the functionality to exclude files with specific extensions.
+
+func TestGetAllFilePathsWithExtensionFilterExclude(t *testing.T) {
+	rootDir := t.TempDir()
+
+	// Create subdirectories and nested subdirectories
+	subDir1 := filepath.Join(rootDir, "subdir_1")
+	err := os.Mkdir(subDir1, 0755)
+	if err != nil {
+		t.Fatalf("expected no error, got %v", err)
+	}
+
+	nestedSubDir1 := filepath.Join(subDir1, "nested_subdir_1")
+	err = os.Mkdir(nestedSubDir1, 0755)
+	if err != nil {
+		t.Fatalf("expected no error, got %v", err)
+	}
+
+	subDir2 := filepath.Join(rootDir, "subdir_2")
+	err = os.Mkdir(subDir2, 0755)
+	if err != nil {
+		t.Fatalf("expected no error, got %v", err)
+	}
+
+	nestedSubDir2 := filepath.Join(subDir2, "nested_subdir_2")
+	err = os.Mkdir(nestedSubDir2, 0755)
+	if err != nil {
+		t.Fatalf("expected no error, got %v", err)
+	}
+
+	// Create files in various directories
+	err = os.WriteFile(filepath.Join(rootDir, "file1.go"), []byte("content1"), 0644)
+	if err != nil {
+		t.Fatalf("expected no error, got %v", err)
+	}
+	err = os.WriteFile(filepath.Join(subDir1, "file2.go"), []byte("content2"), 0644)
+	if err != nil {
+		t.Fatalf("expected no error, got %v", err)
+	}
+	err = os.WriteFile(filepath.Join(nestedSubDir1, "file3.go"), []byte("content3"), 0644)
+	if err != nil {
+		t.Fatalf("expected no error, got %v", err)
+	}
+	err = os.WriteFile(filepath.Join(subDir2, "file4.txt"), []byte("content4"), 0644)
+	if err != nil {
+		t.Fatalf("expected no error, got %v", err)
+	}
+	err = os.WriteFile(filepath.Join(nestedSubDir2, "file5.md"), []byte("content5"), 0644)
+	if err != nil {
+		t.Fatalf("expected no error, got %v", err)
+	}
+	err = os.WriteFile(filepath.Join(nestedSubDir2, "file6.txt"), []byte("content6"), 0644)
+	if err != nil {
+		t.Fatalf("expected no error, got %v", err)
+	}
+
+	// Expected result: exclude .txt files, keep the rest
+	expected := []string{
+		filepath.Join(rootDir, "file1.go"),
+		filepath.Join(subDir1, "file2.go"),
+		filepath.Join(nestedSubDir1, "file3.go"),
+		subDir1,
+		subDir2,
+		nestedSubDir1,
+		nestedSubDir2,
+	}
+
+	// Get all file paths excluding .txt files
+	filePaths, err := files.GetAllFilePaths(rootDir, nil, nil, []string{".txt", ".md"})
+	if err != nil {
+		t.Fatalf("expected no error, got %v", err)
+	}
+
+	// Check the number of files found
+	if len(filePaths) != len(expected) {
+		t.Fatalf("expected %d files, got %d", len(expected), len(filePaths))
+	}
+
+	// Verify that each expected file is in the result
+	for _, exp := range expected {
+		found := false
+		for _, fp := range filePaths {
+			if fp == exp {
+				found = true
+				break
+			}
+		}
+		if !found {
+			t.Errorf("expected path %s not found in result", exp)
+		}
+	}
+}
+
 // Tests the functionality to read all the content of files and directories and create a
 // file content map.
 func TestGetContentMapOfFiles(t *testing.T) {