# floccus

> Securely synchronize bookmarks across Chrome, Firefox, Edge, and more using your own cloud storage.

Canonical page: [https://chrome-stats.com/d/floccus](https://chrome-stats.com/d/floccus)

## Overview

- **ID:** `floccus`
- **Platform:** Firefox
- **Type:** Firefox add-on
- **Status:** Available
- **Publisher:** Marcel Klehr
- **Category:** privacy-security,bookmarks,tabs
- **Daily users:** 9,645
- **Weekly downloads:** 381
- **Rating:** 4.46 / 5 (251 ratings)
- **Version:** 5.10.3
- **Last updated:** 2026-08-30
- **First published:** 2016-06-05
- **Size:** 12 MB
- **Data as of:** 2026-09-14
- **Store listing:** [Firefox Add-ons Store](https://addons.mozilla.org/firefox/addon/floccus/)
- **Website:** [https://floccus.org](https://floccus.org/)
- **Privacy policy:** [https://addons.mozilla.org/firefox/addon/floccus/privacy/](https://addons.mozilla.org/firefox/addon/floccus/privacy/)

## Description

**Floccus** securely synchronizes bookmarks across Firefox, Chrome, Edge, and other supported browsers and devices. Sync updates instantly and keep your bookmarks available across desktop, Android, and iOS.

Choose your preferred storage backend, including Nextcloud, Linkwarden, KaraKeep, WebDAV, Git, Google Drive, or Dropbox. Floccus is open source, ad-free, subscription-free, and designed for privacy, with optional end-to-end encryption for WebDAV and Google Drive. Your data stays in storage you control—not on Floccus servers.

## Rankings

- #797 — Overall
- #20 — Bookmarks
- #49 — Tabs
- #175 — Privacy & Security
- #91 — donation
- #144 — setup

## Permissions and access

### Permissions

- `*://*/*`
- `alarms`
- `bookmarks`
- `storage`
- `unlimitedStorage`
- `tabs`
- `tabGroups`
- `identity`

## Safety

- **Risk impact:** High risk impact
- **Risk likelihood:** Moderate risk likelihood

### Analysis details

- Allows access to all websites, posing a significant security risk as it can monitor and modify data from any visited site.
- This extension was recently updated in the past month. New updates may not be stable or safe.

> Some risk analysis details are omitted from this free response. [Upgrade to view the full analysis](https://chrome-stats.com/pricing).

## Review summary

Reviews highlight Floccus for reliable cross-device/browser syncing, ease of use, and strong Nextcloud integration, with broad browser support and free core syncing. Common drawbacks involve limited Firefox mobile support and potential cross-browser duplicates that may require deduplication. Overall, a solid multi-platform solution with room for mobile improvements and better duplicate handling.

### Pros

- Seamless cross-device and cross-browser bookmark syncing across multiple browsers and operating systems.
- Easy to use and intuitive.
- Strong Nextcloud integration for hosting and syncing bookmarks.
- Works across many browsers with solid multi-browser support.
- Core syncing is free to use (no mandatory payment to sync).

### Cons

- Mobile Firefox support is limited: there is no dedicated Firefox mobile extension, so syncing relies on the mobile app.
- Bookmarks can duplicate across browsers and may require manual deduplication.

## Similar extensions and apps

- [Bookmarkora — Bookmark Sync](https://chrome-stats.com/d/bookmarksync-cloud-sync) — 5 users
- [Nextcloud Bookmark Sync](https://chrome-stats.com/d/nextcloud-bookmark-sync) — 40 users, 3.67 / 5
- [Bookmarks Sync - Sync & Backup bookmarks](https://chrome-stats.com/d/bookmarks_sync) — 15 users
- [CloudLeaf - Browser Bookmark Cloud Sync Extension](https://chrome-stats.com/d/cloudleaf) — 2 users
- [SyncMarks](https://chrome-stats.com/d/syncmarks) — 55 users, 2.75 / 5
- [LinkNest - Cross-Browser Bookmark Sync](https://chrome-stats.com/d/linknest)
- [SyncMark - Your bookmark sync](https://chrome-stats.com/d/syncmark-your-bookmark-sync)
- [BookDAV](https://chrome-stats.com/d/bookdav) — 3 users
- [Hermes Sync](https://chrome-stats.com/d/hermes-sync)
- [MarkSyncr](https://chrome-stats.com/d/marksyncr) — 2 users
- [Cloud em Bookmarks](https://chrome-stats.com/d/cloudbookmarks)
- [Universal Favorites](https://chrome-stats.com/d/universal-favorites) — 4 users, 4.00 / 5

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Source: [Chrome-Stats](https://chrome-stats.com/d/floccus)