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How to stop Mozilla Firefox training AI on your data

What the policy itself says, plan by plan. Where Mozilla Firefox publishes the steps, they're here in its own words, read from an archived copy of the page that gives them. Where it doesn't, this page says so instead of inventing a menu path.

Firefox (all users)

Nothing to switch off: training here is off until an opt-in is given, in a self-serve setting.

"These operate locally - web page content, PDFs, images and tab URLs stay on your device and are not sent to Mozilla's servers or used for training purposes without your explicit consent."
READ THE SOURCE ↗CHECKED 5 Oct 2026

Did a step here not work, or does Mozilla Firefox offer a control this page doesn't mention? Tell us and we'll correct it.