Optional Firefox Sync is end-to-end encrypted
If you enable Sync, synced items such as passwords, history and bookmarks are encrypted before leaving your browser, and Mozilla says it cannot decrypt them.
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Policies retrieved Oct 19, 2026 About these sources
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Mozilla Accounts provide one login for accessing Mozilla services across devices, including connected features such as Sync.
mozilla.org ↗U.S. adult consumer · plan and state unspecified
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If you enable Sync, synced items such as passwords, history and bookmarks are encrypted before leaving your browser, and Mozilla says it cannot decrypt them.
The Mozilla Accounts terms allow suspension or termination for any reason, including if providing the services is no longer commercially viable.
When your device does not create summaries locally, a Shake to Summarize request sends page content to a Mozilla server; Mozilla says it does not store it.
If you enable Sync, synced items such as passwords, history and bookmarks are encrypted before leaving your browser, and Mozilla says it cannot decrypt them.
This protection applies to data you choose to sync; Sync must be enabled.
Firefox fetches its suggestions from Mozilla as you type; OHTTP is used to conceal your IP address and help prevent linking a query to you.
Mozilla says it cannot access chatbot conversations, but collects usage measures such as provider choice and selected-text length; the provider's terms apply.
Applies only if you choose to enable a third-party chatbot in Firefox.
Firefox says history, form data, temporary files and cookies processed to adapt the browser stay on your device unless the notice says otherwise.
When your device does not create summaries locally, a Shake to Summarize request sends page content to a Mozilla server; Mozilla says it does not store it.
Applies when you request a summary on a device that does not use the described on-device processing.
Search Suggestions are on by default, so your query and technical data go directly to your search provider as you type; you can turn suggestions off.
Turn off Search Suggestions in Firefox settings if you do not want requests sent as you type.
Firefox uses New Tab views and clicks to personalize content, including sponsored items; limited information may go to ad partners, and settings offer controls.
Turn off personalization and/or sponsored content in New Tab settings to limit these uses.
No supported finding to show here. This does not mean the policy has no downsides in this area.
The Mozilla Accounts terms allow suspension or termination for any reason, including if providing the services is no longer commercially viable.
If you do not sign in for more than two years, Mozilla says it periodically deletes inactive accounts and will use reasonable efforts to send a reminder first.
Applies if your account has not been signed into for more than two years.
Sign in before reaching two years without a login to avoid the stated inactivity trigger.
The terms exclude several types of damages and cap collective liability at $500, subject to limits imposed by law.
MDN Plus charges again at each term unless you cancel; cancellation stops future charges, and access lasts through the current billing cycle.
Applies only if you choose the paid MDN Plus subscription.
Cancel through the link in a Mozilla email or the Paid Subscriptions section of your Mozilla account to stop renewal.
If you first subscribe through Mozilla's website and cancel within 30 days, Mozilla says it will refund the first subscription term if you request one.
Only the first subscription through Mozilla's website qualifies, and cancellation must be within the first 30 days.
Originally analyzed . The original date marks this service’s first saved analysis, including earlier report formats. This report was generated .
This report was generated from saved policy text and checked in a second automated review. Automated interpretation can still miss or misread terms. The source documents were retrieved on Oct 19, 2026. Policies may have changed since retrieval.