diff --git a/README.md b/README.md
index a9a1a7b1f..15d470607 100644
--- a/README.md
+++ b/README.md
@@ -36,6 +36,7 @@ You’ll be asked to provide the following values:
 * [Usage](#usage)
 * [Options](#options)
 * [Plugins](#plugins)
+* [Localisations](#localisations)
 * [Local development](#local-development)
 * [Credits](#credits)
 * [Similar projects](#similar-projects)
@@ -54,6 +55,7 @@ You’ll be asked to provide the following values:
 * Bookmarklet to save and share bookmarks
 * Publish to different content stores (GitHub and GitLab)
 * Support for popular static site generators (Jekyll, Hugo, 11ty)
+* Localised to [different languages](#localisations)
 * ~~Plugin API~~
 
 ## Install
@@ -179,10 +181,10 @@ To ensure Indiekit’s endpoint can be discovered by Micropub clients (and have
 
 ### `application.locale`
 
-The language used in the application interface. Available languages: `en`
+The language used in the application interface. See the list of [supported languages](#localisations).
 
 Type: `string`\
-*Optional*, defaults to `en`
+*Optional*, defaults to system language if supported, else `en` (English)
 
 ### `application.mongodbUrl`
 
@@ -214,10 +216,10 @@ Type: `Array | URL`\
 
 ### `publication.locale`
 
-Your publication’s locale, this value is currently used to format dates.
+Your publication’s locale. Currently used to format dates.
 
 Type: `string`\
-*Optional*, defaults to value in `application.locale`
+*Optional*, defaults to `en` (English)
 
 ### `publication.me`
 
@@ -463,6 +465,15 @@ The following endpoints are included by default:
 * [Jekyll](https://www.npmjs.com/package/@indiekit/preset-jekyll)
 * [Hugo](https://www.npmjs.com/package/@indiekit/preset-hugo)
 
+## Localisations
+
+Indiekit has been localised into the following languages:
+
+* `en-US`: English (US)
+* `de-DE`: Deutsch
+
+Contributions for other languages are encouraged.
+
 ## Local development
 
 ```sh
diff --git a/indiekit.config.js b/indiekit.config.js
index 5bfcc7965..2873d0c14 100644
--- a/indiekit.config.js
+++ b/indiekit.config.js
@@ -19,7 +19,6 @@ const github = new GithubStore({
 
 // Application settings
 indiekit.set('application.mongodbUrl', process.env.MONGODB_URL);
-indiekit.set('application.locale', process.env.LOCALE);
 
 // Publication settings
 indiekit.set('publication.me', process.env.PUBLICATION_URL);
diff --git a/packages/endpoint-media/controllers/files.js b/packages/endpoint-media/controllers/files.js
index ef3c8f211..e9ddfccd5 100644
--- a/packages/endpoint-media/controllers/files.js
+++ b/packages/endpoint-media/controllers/files.js
@@ -14,7 +14,7 @@ export const filesController = publication => ({
   list: async (request, response, next) => {
     try {
       response.render('files', {
-        title: 'Uploaded files',
+        title: response.__('media.files.title'),
         files: await publication.media.find().toArray(),
         parentUrl: `${publication.mediaEndpoint}/files/`
       });
@@ -49,7 +49,7 @@ export const filesController = publication => ({
       );
 
       response.render('file', {
-        parent: 'Uploaded files',
+        parent: response.__('media.files.title'),
         title: file.properties.filename,
         published: file.properties.published,
         type: file.properties['post-type'],
diff --git a/packages/endpoint-media/index.js b/packages/endpoint-media/index.js
index 9822143d9..44b5278bb 100644
--- a/packages/endpoint-media/index.js
+++ b/packages/endpoint-media/index.js
@@ -5,6 +5,7 @@ import path from 'path';
 import {uploadController} from './controllers/upload.js';
 import {filesController} from './controllers/files.js';
 import {queryController} from './controllers/query.js';
+import {locales} from './locales/index.js';
 
 export const __dirname = path.dirname(fileURLToPath(import.meta.url));
 
@@ -31,10 +32,13 @@ export const MediaEndpoint = class {
   init(indiekitConfig) {
     const {application, publication} = indiekitConfig;
 
+    indiekitConfig.addLocale('de', locales.de);
+    indiekitConfig.addLocale('en', locales.en);
+
     if (application.hasDatabase) {
       indiekitConfig.addNavigation({
         href: `${this.mountpath}/files`,
-        text: 'Files'
+        text: 'media.title'
       });
     }
 
diff --git a/packages/endpoint-media/locales/de.js b/packages/endpoint-media/locales/de.js
new file mode 100644
index 000000000..c312d6b30
--- /dev/null
+++ b/packages/endpoint-media/locales/de.js
@@ -0,0 +1,10 @@
+export const de = {
+  media: {
+    title: 'Dateien',
+    download: 'Download-Datei',
+    properties: 'Eigenschaften',
+    files: {
+      title: 'Hochgeladene Dateien'
+    }
+  }
+};
diff --git a/packages/endpoint-media/locales/en.js b/packages/endpoint-media/locales/en.js
new file mode 100644
index 000000000..cc82f636d
--- /dev/null
+++ b/packages/endpoint-media/locales/en.js
@@ -0,0 +1,10 @@
+export const en = {
+  media: {
+    title: 'Files',
+    download: 'Download file',
+    properties: 'Properties',
+    files: {
+      title: 'Uploaded files'
+    }
+  }
+};
diff --git a/packages/endpoint-media/locales/index.js b/packages/endpoint-media/locales/index.js
new file mode 100644
index 000000000..48f04a099
--- /dev/null
+++ b/packages/endpoint-media/locales/index.js
@@ -0,0 +1,4 @@
+import {de} from './de.js';
+import {en} from './en.js';
+
+export const locales = {de, en};
diff --git a/packages/endpoint-media/views/file.njk b/packages/endpoint-media/views/file.njk
index 99185720a..4cfb466b5 100644
--- a/packages/endpoint-media/views/file.njk
+++ b/packages/endpoint-media/views/file.njk
@@ -8,10 +8,10 @@
   {% elif type == "video" %}
     <video src="{{ url }}" controls>
   {% else %}
-    <a href="{{ url }}" download>Download file</a>
+    <a href="{{ url }}" download>{{ __("media.download") }}</a>
   {% endif %}
   {{ summary({
-    title: "File properties",
+    title: __("media.properties"),
     rows: properties
   }) }}
 {% endblock %}
\ No newline at end of file
diff --git a/packages/endpoint-micropub/controllers/posts.js b/packages/endpoint-micropub/controllers/posts.js
index ee4addb99..dc969481e 100644
--- a/packages/endpoint-micropub/controllers/posts.js
+++ b/packages/endpoint-micropub/controllers/posts.js
@@ -15,7 +15,7 @@ export const postsController = publication => ({
   list: async (request, response, next) => {
     try {
       response.render('posts', {
-        title: 'Published posts',
+        title: response.__('micropub.posts.title'),
         posts: await publication.posts.find().toArray(),
         parentUrl: `${publication.micropubEndpoint}/posts/`
       });
@@ -50,7 +50,7 @@ export const postsController = publication => ({
       );
 
       response.render('post', {
-        parent: 'Published posts',
+        parent: response.__('micropub.posts.title'),
         title: post.properties.name || capitalize(post.properties['post-type']),
         content: post.properties.content,
         properties,
diff --git a/packages/endpoint-micropub/index.js b/packages/endpoint-micropub/index.js
index 0c5be58ba..c1cd214e0 100644
--- a/packages/endpoint-micropub/index.js
+++ b/packages/endpoint-micropub/index.js
@@ -5,6 +5,7 @@ import {fileURLToPath} from 'url';
 import {actionController} from './controllers/action.js';
 import {postsController} from './controllers/posts.js';
 import {queryController} from './controllers/query.js';
+import {locales} from './locales/index.js';
 
 export const __dirname = path.dirname(fileURLToPath(import.meta.url));
 
@@ -31,10 +32,13 @@ export const MicropubEndpoint = class {
   init(indiekitConfig) {
     const {application, publication} = indiekitConfig;
 
+    indiekitConfig.addLocale('de', locales.de);
+    indiekitConfig.addLocale('en', locales.en);
+
     if (application.hasDatabase) {
       indiekitConfig.addNavigation({
         href: `${this.mountpath}/posts`,
-        text: 'Posts'
+        text: 'micropub.title'
       });
     }
 
diff --git a/packages/endpoint-micropub/locales/de.js b/packages/endpoint-micropub/locales/de.js
new file mode 100644
index 000000000..0e70fcebf
--- /dev/null
+++ b/packages/endpoint-micropub/locales/de.js
@@ -0,0 +1,10 @@
+export const de = {
+  micropub: {
+    title: 'Beiträge',
+    microformats: 'Microformats für diesen Beitrag',
+    properties: 'Eigenschaften',
+    posts: {
+      title: 'Hochgeladene Dateien'
+    }
+  }
+};
diff --git a/packages/endpoint-micropub/locales/en.js b/packages/endpoint-micropub/locales/en.js
new file mode 100644
index 000000000..19da6095f
--- /dev/null
+++ b/packages/endpoint-micropub/locales/en.js
@@ -0,0 +1,10 @@
+export const en = {
+  micropub: {
+    title: 'Posts',
+    microformats: 'Microformats for this post',
+    properties: 'Properties',
+    posts: {
+      title: 'Published posts'
+    }
+  }
+};
diff --git a/packages/endpoint-micropub/locales/index.js b/packages/endpoint-micropub/locales/index.js
new file mode 100644
index 000000000..48f04a099
--- /dev/null
+++ b/packages/endpoint-micropub/locales/index.js
@@ -0,0 +1,4 @@
+import {de} from './de.js';
+import {en} from './en.js';
+
+export const locales = {de, en};
diff --git a/packages/endpoint-micropub/views/post.njk b/packages/endpoint-micropub/views/post.njk
index 81b80c846..676f4e227 100644
--- a/packages/endpoint-micropub/views/post.njk
+++ b/packages/endpoint-micropub/views/post.njk
@@ -15,11 +15,11 @@
     {% endfor %}
   {% endif %}
   {{ summary({
-    title: "Post properties",
+    title: __("micropub.properties"),
     rows: properties
   }) }}
   <details>
-    <summary>Microformats for this post</summary>
+    <summary>{{ __("micropub.microformats") }}</summary>
 <pre>{{ post.properties.mf2 | dump(2) }}</pre>
   </details>
 {% endblock %}
\ No newline at end of file
diff --git a/packages/endpoint-share/controllers/share.js b/packages/endpoint-share/controllers/share.js
index c04e39925..e301dc190 100644
--- a/packages/endpoint-share/controllers/share.js
+++ b/packages/endpoint-share/controllers/share.js
@@ -5,7 +5,7 @@ export const shareController = publication => ({
     const {content, name, url, success} = request.query;
 
     response.render('share', {
-      title: 'Share',
+      title: response.__('share.title'),
       content,
       name,
       url,
@@ -33,7 +33,7 @@ export const shareController = publication => ({
     } catch (error) {
       if (error.response) {
         response.render('share', {
-          title: 'Share',
+          title: response.__('share.title'),
           content,
           name,
           url,
diff --git a/packages/endpoint-share/index.js b/packages/endpoint-share/index.js
index 55f907a5c..ce86ce356 100644
--- a/packages/endpoint-share/index.js
+++ b/packages/endpoint-share/index.js
@@ -2,6 +2,7 @@ import express from 'express';
 import path from 'path';
 import {fileURLToPath} from 'url';
 import {shareController} from './controllers/share.js';
+import {locales} from './locales/index.js';
 
 export const __dirname = path.dirname(fileURLToPath(import.meta.url));
 
@@ -28,9 +29,12 @@ export const ShareEndpoint = class {
   init(indiekitConfig) {
     const {application, publication} = indiekitConfig;
 
+    indiekitConfig.addLocale('de', locales.de);
+    indiekitConfig.addLocale('en', locales.en);
+
     indiekitConfig.addNavigation({
       href: this.options.mountpath,
-      text: 'Share'
+      text: 'share.title'
     });
 
     indiekitConfig.addRoute({
diff --git a/packages/endpoint-share/locales/de.js b/packages/endpoint-share/locales/de.js
new file mode 100644
index 000000000..9e0b51f41
--- /dev/null
+++ b/packages/endpoint-share/locales/de.js
@@ -0,0 +1,9 @@
+export const de = {
+  share: {
+    title: 'Teilen',
+    name: 'Titel',
+    content: 'Inhalt',
+    url: 'URL',
+    submit: 'Veröffentlichen'
+  }
+};
diff --git a/packages/endpoint-share/locales/en.js b/packages/endpoint-share/locales/en.js
new file mode 100644
index 000000000..c9d0d7c84
--- /dev/null
+++ b/packages/endpoint-share/locales/en.js
@@ -0,0 +1,9 @@
+export const en = {
+  share: {
+    title: 'Share',
+    name: 'Title',
+    content: 'Content',
+    url: 'URL',
+    submit: 'Publish'
+  }
+};
diff --git a/packages/endpoint-share/locales/index.js b/packages/endpoint-share/locales/index.js
new file mode 100644
index 000000000..48f04a099
--- /dev/null
+++ b/packages/endpoint-share/locales/index.js
@@ -0,0 +1,4 @@
+import {de} from './de.js';
+import {en} from './en.js';
+
+export const locales = {de, en};
diff --git a/packages/endpoint-share/views/share.njk b/packages/endpoint-share/views/share.njk
index dbdbc6165..45df0d6ab 100644
--- a/packages/endpoint-share/views/share.njk
+++ b/packages/endpoint-share/views/share.njk
@@ -5,17 +5,17 @@
 {% block fieldset %}
   {{ preview({
     title: {
-      text: "Title",
+      text: __("share.name"),
       for: "name",
       value: name
     },
     text: {
-      text: "Content",
+      text: __("share.content"),
       for: "content",
       value: content
     },
     url: {
-      text: "URL",
+      text: __("share.url"),
       for: "url",
       value: url
     },
@@ -28,7 +28,7 @@
     name: "name",
     value: name,
     label: {
-      text: "Title"
+      text: __("share.name")
     }
   }) }}
 
@@ -37,7 +37,7 @@
     name: "content",
     value: content,
     label: {
-      text: "Content"
+      text: __("share.content")
     }
   }) | indent(8) }}
 
@@ -46,7 +46,7 @@
     name: "bookmark-of",
     value: url,
     label: {
-      text: "URL"
+      text: __("share.url")
     }
   }) }}
 
@@ -63,6 +63,6 @@
   }) }}
 
   {{ button({
-    text: "Publish"
+    text: __("share.submit")
   }) }}
 {% endblock %}
\ No newline at end of file
diff --git a/packages/indiekit/config/defaults.js b/packages/indiekit/config/defaults.js
index 5fba9e9ad..005db6df1 100644
--- a/packages/indiekit/config/defaults.js
+++ b/packages/indiekit/config/defaults.js
@@ -6,6 +6,7 @@ import {MicropubEndpoint} from '@indiekit/endpoint-micropub';
 import {ShareEndpoint} from '@indiekit/endpoint-share';
 import {authenticate} from '../middleware/authentication.js';
 import {indieauth} from '../middleware/indieauth.js';
+import {locales} from '../locales/index.js';
 
 const __dirname = path.dirname(fileURLToPath(import.meta.url));
 const packagePath = path.join(__dirname, '..', 'package.json');
@@ -22,7 +23,7 @@ const application = {
     shareEndpoint
   ],
   hasDatabase: false,
-  locale: 'en',
+  locales,
   mongodbUrl: false,
   middleware: {
     authenticate,
@@ -41,7 +42,7 @@ const application = {
 
 const publication = {
   categories: [],
-  locale: application.locale,
+  locale: 'en',
   me: null,
   postTemplate: null,
   postTypes: [],
diff --git a/packages/indiekit/config/server.js b/packages/indiekit/config/server.js
index 11a5d397e..e04a1af89 100644
--- a/packages/indiekit/config/server.js
+++ b/packages/indiekit/config/server.js
@@ -1,11 +1,13 @@
 import express from 'express';
 import cookieSession from 'cookie-session';
+import i18n from 'i18n';
 import {v4 as uuidv4} from 'uuid';
 import {templates} from '@indiekit/frontend';
 import * as error from '../middleware/error.js';
 import {locals} from '../middleware/locals.js';
 import {logging} from '../middleware/logging.js';
 import {routes} from '../routes/index.js';
+import {defaultConfig} from './defaults.js';
 
 export const serverConfig = indiekitConfig => {
   const config = express();
@@ -23,6 +25,18 @@ export const serverConfig = indiekitConfig => {
     secret: uuidv4()
   }));
 
+  // Internationalisation
+  i18n.configure({
+    cookie: 'locale',
+    defaultLocale: 'en',
+    indent: '  ',
+    objectNotation: true,
+    header: defaultConfig.application.locale ? '' : 'accept-language',
+    queryParameter: 'lang',
+    staticCatalog: defaultConfig.application.locales
+  });
+  config.use(i18n.init);
+
   // Locals
   config.use(locals(indiekitConfig));
 
diff --git a/packages/indiekit/controllers/session.js b/packages/indiekit/controllers/session.js
index d426115d0..76384540e 100644
--- a/packages/indiekit/controllers/session.js
+++ b/packages/indiekit/controllers/session.js
@@ -26,7 +26,7 @@ export const login = (request, response) => {
   auth.options.redirectUri = redirectUri;
 
   response.render('session/login', {
-    title: 'Sign in',
+    title: response.__('session.login.title'),
     referrer: request.query.referrer
   });
 };
@@ -35,7 +35,7 @@ export const authenticate = async (request, response) => {
   const errors = validationResult(request);
   if (!errors.isEmpty()) {
     return response.status(422).render('session/login', {
-      title: 'Sign in',
+      title: response.__('session.login.title'),
       errors: errors.mapped()
     });
   }
@@ -50,7 +50,7 @@ export const authenticate = async (request, response) => {
     response.redirect(authUrl);
   } catch (error) {
     response.status(401).render('session/login', {
-      title: 'Sign in',
+      title: response.__('session.login.title'),
       error: error.message
     });
   }
@@ -61,8 +61,8 @@ export const authenticationCallback = async (request, response, next) => {
 
   if (!code || !state || !auth.validateState(state)) {
     return response.status(403).render('session/login', {
-      title: 'Sign in',
-      error: 'Missing code or state mismatch'
+      title: response.__('session.login.title'),
+      error: response.__('session.login.error.validateState')
     });
   }
 
diff --git a/packages/indiekit/controllers/status.js b/packages/indiekit/controllers/status.js
index 079da6bd7..3fc42df4e 100644
--- a/packages/indiekit/controllers/status.js
+++ b/packages/indiekit/controllers/status.js
@@ -1,5 +1,5 @@
 export const viewStatus = (request, response) => {
   return response.render('status', {
-    title: 'Server status'
+    title: response.__('status.title')
   });
 };
diff --git a/packages/indiekit/index.js b/packages/indiekit/index.js
index 5731e52a2..0b1e126e9 100644
--- a/packages/indiekit/index.js
+++ b/packages/indiekit/index.js
@@ -42,6 +42,10 @@ export const Indiekit = class {
     this.application.endpoints = this.application.endpoints.concat(endpoint);
   }
 
+  addLocale(language, translations) {
+    Object.assign(this.application.locales[language], translations);
+  }
+
   addNavigation(item) {
     this.application.navigationItems = this.application.navigationItems.concat(item);
   }
diff --git a/packages/indiekit/lib/navigation.js b/packages/indiekit/lib/navigation.js
index b3254d55f..84e717a12 100644
--- a/packages/indiekit/lib/navigation.js
+++ b/packages/indiekit/lib/navigation.js
@@ -1,13 +1,19 @@
-export const getNavigation = (application, token) => {
-  let navigation = [(token ? {
+export const getNavigation = (application, request, response) => {
+  const defaultNavigation = [(request.session.token ? {
     href: '/session/logout',
-    text: 'Sign out'
+    text: 'session.logout.title'
   } : {
     href: '/session/login',
-    text: 'Sign in'
+    text: 'session.login.title'
   })];
 
-  navigation = [...application.navigationItems, ...navigation];
+  // Merge default navigation items with those added by plugins
+  const navigation = [...application.navigationItems, ...defaultNavigation];
+
+  // Translate text strings
+  navigation.forEach(item => {
+    item.text = response.__(item.text);
+  });
 
   return navigation;
 };
diff --git a/packages/indiekit/locales/de.js b/packages/indiekit/locales/de.js
new file mode 100644
index 000000000..2ddb3ce9f
--- /dev/null
+++ b/packages/indiekit/locales/de.js
@@ -0,0 +1,38 @@
+export const de = {
+  error: 'Error',
+  novalue: 'Nicht vorgesehen',
+  guidance: {
+    discovery: 'Fügen Sie dem `<head>` Ihrer Website die folgenden Werte hinzu, damit Micropub-Kunden %s erkennen und um Erlaubnis bitten, auf Ihrer Website zu posten'
+  },
+  session: {
+    login: {
+      error: {
+        validateState: 'Fehlender Code oder State inkongruenz'
+      },
+      me: 'Webadresse',
+      submit: 'Einloggen',
+      title: 'Einloggen'
+    }
+  },
+  status: {
+    title: 'Server Status',
+    application: {
+      summaryTitle: 'Anwendungseinstellungen',
+      name: 'Name',
+      locale: 'Sprache',
+      themeColor: 'Themenfarbe',
+      endpoints: 'Endpunkte'
+    },
+    publication: {
+      summaryTitle: 'Veröffentlichung Einstellungen',
+      me: 'Webadresse',
+      locale: 'Sprache',
+      timeZone: 'Zeitzone',
+      store: 'Geschäft',
+      preset: 'Voreinstellung',
+      postTypes: 'Beitragstypen',
+      syndicationTargets: 'Syndikationsziele',
+      mediaEndpoint: 'Medienendpunkt'
+    }
+  }
+};
diff --git a/packages/indiekit/locales/en.js b/packages/indiekit/locales/en.js
new file mode 100644
index 000000000..76e8f34f5
--- /dev/null
+++ b/packages/indiekit/locales/en.js
@@ -0,0 +1,38 @@
+export const en = {
+  error: 'Error',
+  novalue: 'Not set',
+  guidance: {
+    discovery: 'So that %s can be discovered by Micropub clients and request permission to post to your website, add the following values to your website’s `<head>`:'
+  },
+  session: {
+    login: {
+      title: 'Sign in',
+      me: 'Web address',
+      submit: 'Sign in',
+      error: {
+        validateState: 'Missing code or state mismatch'
+      }
+    }
+  },
+  status: {
+    title: 'Server status',
+    application: {
+      summaryTitle: 'Application settings',
+      name: 'Name',
+      locale: 'Language',
+      themeColor: 'Theme color',
+      endpoints: 'Endpoints'
+    },
+    publication: {
+      summaryTitle: 'Puplication settings',
+      me: 'Web address',
+      locale: 'Language',
+      timeZone: 'Time zone',
+      store: 'Content store',
+      preset: 'Preset',
+      postTypes: 'Post types',
+      syndicationTargets: 'Syndication targets',
+      mediaEndpoint: 'Media endpoint'
+    }
+  }
+};
diff --git a/packages/indiekit/locales/index.js b/packages/indiekit/locales/index.js
new file mode 100644
index 000000000..48f04a099
--- /dev/null
+++ b/packages/indiekit/locales/index.js
@@ -0,0 +1,4 @@
+import {de} from './de.js';
+import {en} from './en.js';
+
+export const locales = {de, en};
diff --git a/packages/indiekit/middleware/locals.js b/packages/indiekit/middleware/locals.js
index 9c39cb4b1..c9025d274 100644
--- a/packages/indiekit/middleware/locals.js
+++ b/packages/indiekit/middleware/locals.js
@@ -14,7 +14,7 @@ export const locals = indiekitConfig => {
 
       // Application
       application.url = `${request.protocol}://${request.headers.host}`;
-      application.navigation = getNavigation(application, request.session.token);
+      application.navigation = getNavigation(application, request, response);
       response.locals.application = application;
 
       // Publication
diff --git a/packages/indiekit/package-lock.json b/packages/indiekit/package-lock.json
index bed8e999c..de49c5d85 100644
--- a/packages/indiekit/package-lock.json
+++ b/packages/indiekit/package-lock.json
@@ -1273,6 +1273,26 @@
 				"resolve-alpn": "^1.0.0"
 			}
 		},
+		"i18n": {
+			"version": "0.13.2",
+			"resolved": "https://registry.npmjs.org/i18n/-/i18n-0.13.2.tgz",
+			"integrity": "sha512-PB65bHhQESMBIl/xVNChEAzoxZ5W6FrZ1H9Ma/YcPeSfE7VS9b0sqwBPusa0CfzSKUPSl+uMhRIgyv3jkE7XNw==",
+			"requires": {
+				"debug": "^4.1.1",
+				"make-plural": "^6.2.2",
+				"math-interval-parser": "^2.0.1",
+				"messageformat": "^2.3.0",
+				"mustache": "^4.0.1",
+				"sprintf-js": "^1.1.2"
+			},
+			"dependencies": {
+				"sprintf-js": {
+					"version": "1.1.2",
+					"resolved": "https://registry.npmjs.org/sprintf-js/-/sprintf-js-1.1.2.tgz",
+					"integrity": "sha512-VE0SOVEHCk7Qc8ulkWw3ntAzXuqf7S2lvwQaDLRnUeIEaKNQJzV6BwmLKhOqT61aGhfUMrXeaBk+oDGCzvhcug=="
+				}
+			}
+		},
 		"iconv-lite": {
 			"version": "0.4.24",
 			"resolved": "https://registry.npmjs.org/iconv-lite/-/iconv-lite-0.4.24.tgz",
@@ -1513,6 +1533,11 @@
 			"resolved": "https://registry.npmjs.org/lowercase-keys/-/lowercase-keys-2.0.0.tgz",
 			"integrity": "sha512-tqNXrS78oMOE73NMxK4EMLQsQowWf8jKooH9g7xPavRT706R6bkQJ6DY2Te7QukaZsulxa30wQ7bk0pm4XiHmA=="
 		},
+		"make-plural": {
+			"version": "6.2.2",
+			"resolved": "https://registry.npmjs.org/make-plural/-/make-plural-6.2.2.tgz",
+			"integrity": "sha512-8iTuFioatnTTmb/YJjywkVIHLjcwkFD9Ms0JpxjEm9Mo8eQYkh1z+55dwv4yc1jQ8ftVBxWQbihvZL1DfzGGWA=="
+		},
 		"markdown-it": {
 			"version": "11.0.1",
 			"resolved": "https://registry.npmjs.org/markdown-it/-/markdown-it-11.0.1.tgz",
@@ -1533,6 +1558,11 @@
 				"prismjs": "1.21.0"
 			}
 		},
+		"math-interval-parser": {
+			"version": "2.0.1",
+			"resolved": "https://registry.npmjs.org/math-interval-parser/-/math-interval-parser-2.0.1.tgz",
+			"integrity": "sha512-VmlAmb0UJwlvMyx8iPhXUDnVW1F9IrGEd9CIOmv+XL8AErCUUuozoDMrgImvnYt2A+53qVX/tPW6YJurMKYsvA=="
+		},
 		"mdurl": {
 			"version": "1.0.1",
 			"resolved": "https://registry.npmjs.org/mdurl/-/mdurl-1.0.1.tgz",
@@ -1554,6 +1584,36 @@
 			"resolved": "https://registry.npmjs.org/merge-descriptors/-/merge-descriptors-1.0.1.tgz",
 			"integrity": "sha1-sAqqVW3YtEVoFQ7J0blT8/kMu2E="
 		},
+		"messageformat": {
+			"version": "2.3.0",
+			"resolved": "https://registry.npmjs.org/messageformat/-/messageformat-2.3.0.tgz",
+			"integrity": "sha512-uTzvsv0lTeQxYI2y1NPa1lItL5VRI8Gb93Y2K2ue5gBPyrbJxfDi/EYWxh2PKv5yO42AJeeqblS9MJSh/IEk4w==",
+			"requires": {
+				"make-plural": "^4.3.0",
+				"messageformat-formatters": "^2.0.1",
+				"messageformat-parser": "^4.1.2"
+			},
+			"dependencies": {
+				"make-plural": {
+					"version": "4.3.0",
+					"resolved": "https://registry.npmjs.org/make-plural/-/make-plural-4.3.0.tgz",
+					"integrity": "sha512-xTYd4JVHpSCW+aqDof6w/MebaMVNTVYBZhbB/vi513xXdiPT92JMVCo0Jq8W2UZnzYRFeVbQiQ+I25l13JuKvA==",
+					"requires": {
+						"minimist": "^1.2.0"
+					}
+				}
+			}
+		},
+		"messageformat-formatters": {
+			"version": "2.0.1",
+			"resolved": "https://registry.npmjs.org/messageformat-formatters/-/messageformat-formatters-2.0.1.tgz",
+			"integrity": "sha512-E/lQRXhtHwGuiQjI7qxkLp8AHbMD5r2217XNe/SREbBlSawe0lOqsFb7rflZJmlQFSULNLIqlcjjsCPlB3m3Mg=="
+		},
+		"messageformat-parser": {
+			"version": "4.1.3",
+			"resolved": "https://registry.npmjs.org/messageformat-parser/-/messageformat-parser-4.1.3.tgz",
+			"integrity": "sha512-2fU3XDCanRqeOCkn7R5zW5VQHWf+T3hH65SzuqRvjatBK7r4uyFa5mEX+k6F9Bd04LVM5G4/BHBTUJsOdW7uyg=="
+		},
 		"methods": {
 			"version": "1.1.2",
 			"resolved": "https://registry.npmjs.org/methods/-/methods-1.1.2.tgz",
@@ -1651,6 +1711,11 @@
 				"xtend": "^4.0.0"
 			}
 		},
+		"mustache": {
+			"version": "4.0.1",
+			"resolved": "https://registry.npmjs.org/mustache/-/mustache-4.0.1.tgz",
+			"integrity": "sha512-yL5VE97+OXn4+Er3THSmTdCFCtx5hHWzrolvH+JObZnUYwuaG7XV+Ch4fR2cIrcYI0tFHxS7iyFYl14bW8y2sA=="
+		},
 		"negotiator": {
 			"version": "0.6.2",
 			"resolved": "https://registry.npmjs.org/negotiator/-/negotiator-0.6.2.tgz",
diff --git a/packages/indiekit/package.json b/packages/indiekit/package.json
index 4f3b1fea1..dc6b45967 100644
--- a/packages/indiekit/package.json
+++ b/packages/indiekit/package.json
@@ -36,6 +36,7 @@
     "express-validator": "^6.6.1",
     "got": "^11.6.2",
     "http-errors": "^1.8.0",
+    "i18n": "^0.13.2",
     "indieauth-helper": "^1.0.2",
     "lodash": "^4.17.19",
     "mongodb": "^3.6.2",
diff --git a/packages/indiekit/tests/lib/navigation.js b/packages/indiekit/tests/lib/navigation.js
index 9d047d181..5acfa4452 100644
--- a/packages/indiekit/tests/lib/navigation.js
+++ b/packages/indiekit/tests/lib/navigation.js
@@ -10,11 +10,23 @@ test.beforeEach(t => {
 });
 
 test('Returns logged out navigation', t => {
-  const result = getNavigation(t.context.application, false);
+  const result = getNavigation(t.context.application, {
+    session: {
+      token: false
+    }
+  }, {
+    __: string => string
+  });
   t.is(result[0].href, '/session/login');
 });
 
 test('Returns logged in navigation', t => {
-  const result = getNavigation(t.context.application, true);
+  const result = getNavigation(t.context.application, {
+    session: {
+      token: true
+    }
+  }, {
+    __: string => string
+  });
   t.is(result[0].href, '/session/logout');
 });
diff --git a/packages/indiekit/views/session/login.njk b/packages/indiekit/views/session/login.njk
index f3d02e683..0159ac3cc 100644
--- a/packages/indiekit/views/session/login.njk
+++ b/packages/indiekit/views/session/login.njk
@@ -13,13 +13,13 @@
     name: "me",
     value: errors.me.value or publication.me,
     label: {
-      text: "Web address"
+      text: __("session.login.me")
     },
     inputmode: "url",
     autocomplete: "url",
     errorMessage: {
       text: errors.me.msg,
-      label: "Error"
+      label: __("error")
     } if errors.me
   }) | indent(2) }}
 
@@ -30,7 +30,7 @@
   }) | indent(2) }}
 
   {{ button({
-    text: "Sign in",
+    text: __("session.login.submit"),
     classes: "button--block"
   }) | indent(2) }}
 {% endblock %}
\ No newline at end of file
diff --git a/packages/indiekit/views/status.njk b/packages/indiekit/views/status.njk
index 127812a01..ad1e62e6e 100644
--- a/packages/indiekit/views/status.njk
+++ b/packages/indiekit/views/status.njk
@@ -1,7 +1,7 @@
 {% extends "document.njk" %}
 
 {% set discovery %}
-To ensure {{ application.name }} can be discovered by Micropub clients and have permission to post to your website, add the following values to your website’s `<head>`:
+{{ __("guidance.discovery", application.name) | safe }}
 
 ```html
 <link rel="micropub" href="{{ application.url }}/micropub">
@@ -30,92 +30,92 @@ To ensure {{ application.name }} can be discovered by Micropub clients and have
 {%- endfor %}
 
   {{ summary({
-    title: "Publication settings",
+    title: __("status.publication.summaryTitle"),
     rows: [{
       key: {
-        text: "Web address"
+        text: __("status.publication.me")
       },
       value: {
-        text: publication.me | markdown or "Not set"
+        text: publication.me | markdown or __("novalue")
       }
     }, {
       key: {
-        text: "Language"
+        text: __("status.publication.locale")
       },
       value: {
         text: publication.locale.split("-") | first | language
       }
     }, {
       key: {
-        text: "Time zone"
+        text: __("status.publication.timeZone")
       },
       value: {
         text: publication.timeZone
       }
     }, {
       key: {
-        text: "Content store"
+        text: __("status.publication.store")
       },
       value: {
-        text: publication.store.name or "Not set"
+        text: publication.store.name or __("novalue")
       }
     }, {
       key: {
-        text: "Preset"
+        text: __("status.publication.preset")
       },
       value: {
-        text: publication.preset.name or "Not set"
+        text: publication.preset.name or __("novalue")
       }
     }, {
       key: {
-        text: "Post types"
+        text: __("status.publication.postTypes")
       },
       value: {
         text: postTypesHtml | indent(2)
       }
     } if publication.postTypes.length > 0, {
       key: {
-        text: "Syndication targets"
+        text: __("status.publication.syndicationTargets")
       },
       value: {
         text: syndicationTargetsHtml | indent(2)
       }
     } if publication.syndicationTargets.length > 0, {
       key: {
-        text: "Media endpoint"
+        text: __("status.publication.mediaEndpoint")
       },
       value: {
-        text: publication.mediaEndpoint or "Not set"
+        text: publication.mediaEndpoint or __("novalue")
       }
     } if publication.mediaEndpoint]
   }) }}
 
   {{ summary({
-    title: "Application settings",
+    title: __("status.application.summaryTitle"),
     rows: [{
       key: {
-        text: "Name"
+        text: __("status.application.name")
       },
       value: {
-        text: application.name or "Not set"
+        text: application.name2 or __("novalue")
       }
     }, {
       key: {
-        text: "Language"
+        text: __("status.application.locale")
       },
       value: {
         text: application.locale.split("-") | first | language
       }
     }, {
       key: {
-        text: "Theme colour"
+        text: __("status.application.themeColor")
       },
       value: {
         text: "<span style=\"color:" + application.themeColor + "\" aria-hidden\"true\">●</span> " + application.themeColor
       }
     }, {
       key: {
-        text: "Endpoints"
+        text: __("status.application.endpoints")
       },
       value: {
         text: endpointsHtml