diff --git a/README.md b/README.md
index de3ae07..e9f19c8 100644
--- a/README.md
+++ b/README.md
@@ -5,3 +5,37 @@ Core functions, classes and components for [RecogitoJS](https://github.com/recog
 
 To install `npm install @recogito/recogito-client-core`
 
+## Contributing UI Translations
+
+If you want to contribute UI translations to Annotorious or RecogitoJS, you've come to the right place.
+In [this folder](https://github.com/recogito/recogito-client-core/tree/master/src/i18n) 
+you will find `messages` files, one file for each available translation. 
+
+Each `messages` file is a dictionary of the default English labels and their translations. For example, 
+here's what the German translation file `messages_de.json` looks like.
+
+```json
+{
+  "Add a comment...": "Kommentar schreiben...",
+  "Add a reply...": "Antwort schreiben...",
+  "Add tag...": "Tag...",
+  "Cancel": "Abbrechen",
+  "Close": "Schliessen",
+  "Edit": "Bearbeiten",
+  "Delete": "Löschen",
+  "Ok": "Ok"
+}
+``` 
+
+### To add a new translation
+
+- Fork the this repository
+- Add a message file to the [src/i18n folder](https://github.com/recogito/recogito-client-core/tree/master/src/i18n) 
+  named `messages_{iso}.json`, where {iso} is the 2-character ISO code of the language.
+- Copy the dictionary above, and replace the translations accordingly.
+- [Send us a pull request](https://www.freecodecamp.org/news/how-to-make-your-first-pull-request-on-github-3/)
+
+Many thanks in advance! If you have questions, do get in touch via the [Annotorious](https://gitter.im/recogito/annotorious) or 
+[RecogitoJS](https://gitter.im/recogito/recogito-js) chat on Gitter. 
+
+