SyncMarks Review, Pricing & Features

SyncMarks is an open-source, self-hosted bookmark sync tool for Firefox, Edge, and Chrome. See features, setup, pros, cons, and FAQs.

Category
Productivity
Pricing
free/open-source, from Free
Verified
Not yet
Last updated
July 19, 2026
APIOpen SourceSelf-Hosted

What Is SyncMarks

SyncMarks is an open-source system for synchronizing browser bookmarks across Firefox, Microsoft Edge, and Chromium-based browsers using a self-hosted backend instead of a vendor's cloud account. It is maintained by the developer known as Offerel and hosted on Codeberg, with mirrors on GitHub.

The project has two parts: SyncMarks-Webapp, a PHP and JavaScript backend that stores and manages bookmarks and can be used on its own through a browser, and SyncMarks-Extension, a lightweight browser add-on that connects installed browsers to that backend over a REST API, including tab sync.

Key Features

The SyncMarks-Webapp lets users add, edit, delete, and move bookmarks directly through a web interface, with changes syncing back to any connected browser. Because it runs independently of the extension, it can also serve as a standalone bookmark manager accessible from any device with a browser.

The SyncMarks-Extension synchronizes bookmarks, and optionally open tabs, between installed browsers and the self-hosted server, supporting manual or automatic sync. It is available for Firefox through Mozilla Add-ons and for Microsoft Edge through the Edge Add-ons store, and works with other Chromium-based browsers.

Pricing

SyncMarks is completely free and open-source under the AGPL-3.0 license. There is no commercial pricing model; users only need their own server or hosting to run the SyncMarks-Webapp backend.

Key Features

Pros & Cons

Pros

  • Completely free and open-source under AGPL-3.0
  • Keeps bookmark data on infrastructure you control rather than a vendor cloud
  • Works across Firefox, Edge, and Chromium-based browsers
  • Web app can be used independently of the browser extension
  • Includes tab sync in addition to bookmark sync

Cons

  • Requires self-hosting a PHP backend, which needs basic server skills
  • Smaller community and less mature ecosystem than built-in browser sync
  • No official mobile app beyond browser extensions on supported platforms
  • No verified company, funding, or long-term maintenance guarantees
  • Setup involves more steps than simply signing into a built-in browser sync account

Pricing

Frequently Asked Questions

Is SyncMarks free

Yes, SyncMarks is free and open-source under the AGPL-3.0 license.

Which browsers does SyncMarks support

SyncMarks supports Firefox, Microsoft Edge, and other Chromium-based browsers.

Do I need the browser extension to use SyncMarks

No, the SyncMarks-Webapp can be used independently in any browser without installing the extension, though the extension enables automatic syncing with your installed browsers.

What does SyncMarks run on

The SyncMarks-Webapp backend is built with PHP, JavaScript, and CSS and must be self-hosted on your own server.

Does SyncMarks sync open tabs

Yes, in addition to bookmarks, the extension can sync open tabs across connected browsers.

Who maintains SyncMarks

SyncMarks is maintained by the developer Offerel, with the project hosted on Codeberg and mirrored on GitHub.

Where can I download the SyncMarks extension

The extension is available through Mozilla Add-ons for Firefox and the Microsoft Edge Add-ons store.

Is SyncMarks suitable for non-technical users

It is best suited for users comfortable self-hosting a PHP backend, as there is no managed cloud version.

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