Mozilla Updates Firefox Smart Window with AI Form-Filling and Page Monitoring Features

Mozilla has released a new update for Smart Window, the built-in AI browsing experience in Firefox. The update introduces two major automation features designed to streamline routine web tasks: context-aware form filling drawn from active browser tabs and background webpage tracking.

Auto-Filling Web Forms from Open Tabs

The new form-filling feature allows Firefox to pull relevant personal or professional information directly from active tabs to complete multi-field web forms. For example, if a user is completing a job application, Smart Window can gather work background details from an open LinkedIn profile or personal portfolio page and draft appropriate responses.

To trigger the tool, users must click into an online form that contains at least four text fields. A prompt titled "Fill from sources" will appear, displaying a list of all open tabs Firefox can reference. Users can select or deselect specific tabs before the browser generates text suggestions for each field.

Mozilla confirmed that data from selected source pages is processed using Google's Gemini 3.1 Flash Lite model, which powers the text generation. Currently, the form-filling capability is limited to standard text fields, but Mozilla is working to add support for dropdown menus and PDF documents in future updates.

Automated Webpage Tracking with '/watch'

Alongside form filling, Mozilla added a webpage monitoring capability to help users track specific updates across the web, such as price drops, new job postings, or content changes.

Users can set up a tracking task by typing /watch directly into the Smart Window chat interface, describing what specific details they want monitored, and specifying the target URLs. Firefox can be configured to inspect those pages on a daily or weekly schedule.

However, webpage checks only run while the Firefox browser remains actively open. When the system detects relevant changes, it alerts the user through a notification via the Tasks button on the browser toolbar or through standard desktop notifications if enabled.