Looks like it's only in the release notes [1] - I only spotted it recently myself while updating an extension, it's: web-ext run --target chromium [1] htt

Looks like it's only in the release notes [1] - I only spotted it recently myself while updating an extension, it's: web-ext run --target chromium [1] https://github.com/mozilla/web-ext/releases https://github.com/mozilla/web-ext/releases