COMMAND REFERENCE

fxcss snapshot

bash

fxcss snapshot --firefox stable --out .fxcss/firefox-baseline.json

Saves the UI IDs and classes observed in the collected browser states, along with the Firefox version, build ID and operating system. Keep this JSON file with your theme to compare later, without keeping the old browser installed:

bash

fxcss changelog --baseline .fxcss/firefox-baseline.json --firefox beta

The snapshot covers the states fxcss collected; it is not a full DOM archive or a guarantee that every Firefox UI element was observed.

Getting started fxcss changelog