# KeepSync

> Sync tabs, bookmarks and history between browsers using your own server. Self-hosted, open source, privacy-first.

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

## Overview

- **ID:** `keepsync`
- **Platform:** Firefox
- **Type:** Firefox add-on
- **Status:** Available
- **Publisher:** Lachlan
- **Category:** bookmarks
- **Daily users:** 5
- **Weekly downloads:** 1
- **Version:** 1.0.0
- **Last updated:** 2026-05-12
- **First published:** 2026-05-09
- **Size:** 85 KB
- **Data as of:** 2026-09-07
- **Store listing:** [Firefox Add-ons Store](https://addons.mozilla.org/firefox/addon/keepsync/)
- **Website:** [https://lachlanallison.com](https://lachlanallison.com/)
- **Privacy policy:** [https://addons.mozilla.org/firefox/addon/keepsync/privacy/](https://addons.mozilla.org/firefox/addon/keepsync/privacy/)

## Description

KeepSync keeps your browsing in sync across browsers using a self-hosted server you control. No third-party cloud, no telemetry, no accounts.

Features:
- Tab sync — Your open tabs appear across all paired browsers in near real time.
- Bookmark sync — Full bookmark tree synchronization, preserving folder structure and ordering.
- History sync — Recent browsing history is merged so nothing gets lost when switching devices.
- Device pairing — Pair new browsers via invite tokens (first device) or in-app pairing codes (subsequent devices).
- Self-hosted server — A single Go binary with SQLite. Run it on a Raspberry Pi, VPS, or your home NAS.
- Privacy-first — All data stays on your server. No external services, no tracking, no accounts. The extension source is fully auditable.

Quick start:
1. Deploy the server (see GitHub for Docker, systemd, or bare-metal instructions).
2. Install the extension in your browsers.
3. Point each browser at your server and pair them.

KeepSync is free and open source (MIT). Contributions and feedback are welcome on GitHub.

## Rankings

- #45,845 — Overall
- #61 — keep
- #88 — sync

## Permissions and access

### Permissions

- `tabs`
- `storage`
- `alarms`
- `downloads`
- `bookmarks`
- `history`

### Host permissions

- `http://localhost/*`
- `https://*/*`
- `http://*/*`

## Safety

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

### Analysis details

- Grants access to browser tabs, which can be used to track user browsing habits and history, presenting a privacy concern.
- This extension has low user count. Unpopular extensions 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).

## Similar extensions and apps

- [SyncMarks](https://chrome-stats.com/d/syncmarks) — 56 users, 2.75 / 5
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- [Nextcloud Bookmark Sync](https://chrome-stats.com/d/nextcloud-bookmark-sync) — 37 users, 3.00 / 5
- [xBrowserSync](https://chrome-stats.com/d/xbs) — 2,448 users, 4.04 / 5
- [Hermes Sync](https://chrome-stats.com/d/hermes-sync) — 1 users
- [SyncMark - Your bookmark sync](https://chrome-stats.com/d/syncmark-your-bookmark-sync)
- [BrowSync](https://chrome-stats.com/d/brow-sync) — 5 users, 5.00 / 5
- [Sync Everything](https://chrome-stats.com/d/sync-everything) — 8 users
- [Bookmarks Sync - Sync & Backup bookmarks](https://chrome-stats.com/d/bookmarks_sync) — 14 users
- [SaveSync](https://chrome-stats.com/d/savesync) — 1 users
- [TabSync](https://chrome-stats.com/d/tabsync) — 1 users
- [XBrowser Bookmark Sync](https://chrome-stats.com/d/xbrowser-bookmark-sync) — 21 users, 4.00 / 5

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