diff --git a/i18n/readme.md b/i18n/readme.md
index 5bc523f3..37fbc03d 100644
--- a/i18n/readme.md
+++ b/i18n/readme.md
@@ -6,5 +6,17 @@ might need localization must go to this module.**
 
 ## Contribute
 
+![Translation status](https://i18n.mm20.de/widgets/kvaesitso/-/i18n/multi-auto.svg)
+
 Go to the [Weblate project instance](https://i18n.mm20.de/engage/kvaesitso/) and start translating.
 
+There are two components: i18n and units:
+
+- `i18n` is the main component that contains most of the strings that are used within the app.
+
+- `units` is an extra component that contains all the strings that are used by the unit converter.
+Each unit has a `unit_[name]` and a `unit_[name]_symbol` resource. `unit_[name]_symbol` is the
+symbol that is used in the search query. For SI units, this should be the SI symbol (m, s, kg and so on),
+but other, non-SI units may need to be translated (e.g. nautical miles or horse powers.
+**For technical reasons, these symbols may not contain spaces.**
+