1# Metrics 2 3The metrics collected by Firefox using the 4[Glean SDK](https://mozilla.github.io/glean/book/index.html) 5are documented in 6[The Glean Dictionary](https://dictionary.telemetry.mozilla.org/apps/firefox_desktop/). 7
1# Metrics 2 3The metrics collected by Firefox using the 4[Glean SDK](https://mozilla.github.io/glean/book/index.html) 5are documented in 6[The Glean Dictionary](https://dictionary.telemetry.mozilla.org/apps/firefox_desktop/). 7