Mozilla Enhances Firefox Smart Window with AI‑Powered Form Filling and Webpage Monitoring

Mozilla has upgraded Firefox’s Smart Window, its AI‑driven browsing interface, to automatically fill online forms using data from the user’s open tabs. The new feature can pull information from sites such as LinkedIn or a personal portfolio and populate text fields in a job application form. Users trigger the function by clicking a form with at least four text fields, then selecting the “Fill from sources” option, which lists available tabs. Firefox generates suggestions based on the selected pages, and the feature currently supports text fields, with plans to add dropdowns and PDFs. The data used to generate suggestions is sent to Google’s Gemini 3.1 Flash Lite model. In addition, Smart Window now allows users to set up a “/watch” task to monitor specific webpages for changes such as sales or new job listings. The browser checks for updates daily or weekly while open, and notifies the user via the Tasks button or desktop alerts. Watching pauses after 60 days without changes and stops after 90 days. The update is rolling out to the Smart Window beta on desktop in the United States and Canada, with broader availability expected in the coming months.