Firefox’s Smart Window adds AI form filling and webpage monitoring

What happened

Mozilla is updating Firefox’s Smart Window with form filling from open tabs and scheduled webpage monitoring, rolling out to desktop beta users in the US and Canada. Form suggestions use Google’s Gemini 3.1 Flash Lite, which receives data from selected source pages; dropdown menus and PDFs are planned. The /watch command enables daily or weekly checks while Firefox is open, with monitoring paused after 60 days without a detected change and stopped after 90 days.

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The story so far

Mozilla is rolling out AI form filling and scheduled webpage monitoring to Firefox’s Smart Window desktop beta in the US and Canada, with availability in other countries planned in the coming months. The form-filling feature suggests entries using information from open tabs. It uses Google’s Gemini 3.1 Flash Lite, which receives data from the source pages users select. Support for dropdown menus and PDFs is planned. The /watch command lets users schedule daily or weekly webpage checks, which run while Firefox is open. Monitoring pauses after 60 days without a detected change and stops after 90 days.