Sync keeps duplicating bookmarks in Firefox
Bookmark sync creates repeated copies of the same bookmarks across Firefox and other browsers, and removing them lets more duplicates return.
Tier I · Proven The best-established problems.
10 public reports · first reported 16 January 2021 · last reported 3 December 2025
What's going wrong
Firefox users who sync bookmarks through iCloud report that the same bookmark appears many times after a sync, sometimes in the toolbar and sometimes across every browser on the machine.
AI-assisted: written with the help of AI from the reports. The idea report has the full summary.
In the idea report
- The full summary.
- The products the 10 reports are about, and how many came each month.
- Related problems.
No business has been found with this problem yet, so the report has no contacts. All sales are final — no refunds. Pricing.