Firefox 148 introduces AI kill switch, giving users full control over AI features

Mozilla delivers on promise with new AI controls

Mozilla has released Firefox 148 with a dedicated AI controls section that puts user choice and control at the center of its approach to artificial intelligence. The update, which dropped on February 24, includes a Block AI enhancements toggle that disables all current and future AI features with a single click1

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. This AI kill switch also blocks any pop-ups or alerts pushing users to try existing or upcoming AI features, offering a completely AI-free browsing experience for those who want it3

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The new settings panel appears between "Sync" and "AI controls" in the desktop browser, giving users granular control over which AI features they want to enable4

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. Mozilla CEO Anthony Enzor-DeMeo had promised this functionality after significant user feedback on Reddit, where an open letter critical of AI integration received over 5,000 upvotes on the Firefox subreddit3

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Five AI features you can cherry-pick or block entirely

Firefox 148 introduces five specific AI features, all disabled by default and requiring user activation. The automatic language translations feature translates websites in real time as users browse, with Mozilla emphasizing that translations occur through local processing directly on the device rather than in the cloud1

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. Users can highlight specific text for translation or let the web browser continuously translate each page.

Automatic alt-text generation for PDFs addresses accessibility concerns by creating descriptions for images added to PDF files. This helps screen readers describe visual content for people with vision problems, with Mozilla assuring users that images and text remain on-device and are never used to train AI models1

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. The AI-based tab group suggestions feature uses AI to recommend names for tab groups and suggest other open pages to add to them1

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Summaries in link previews let users preview linked pages before clicking by displaying a photo, summary, and key points generated through AI integration1

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. The sidebar feature provides access to AI chatbot providers including ChatGPT, Google Gemini, Microsoft Copilot, Claude, and Le Chat Mistral2

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Privacy-focused approach sets Firefox apart

Mozilla's implementation emphasizes privacy through local processing for key features. Ajit Varma, Head of Firefox, told Mashable that the company is "taking a different path, one that puts people, not platforms, in charge" at a time when much of the industry moves toward closed, AI-driven ecosystems2

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. The approach responds to user backlash across the tech industry, where companies like Chrome and Microsoft Edge have integrated AI features more aggressively, with Chrome offering direct access to Gemini and Edge pushing Copilot1

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The user feedback came after Mozilla announced in December that Firefox would "evolve into a modern AI browser," triggering concerns from users who wanted clean, efficient, and reliable products without mandatory AI tools2

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. Mozilla promises to add more features to the block-list in the future, ensuring the toggle remains effective as the browser evolves1

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. Users can access the new controls by updating to Firefox 148, heading to Settings, and selecting the AI Controls section2

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