# Seen Blocker for Facebook™

> Facebook™ Seen Blocker allows you to read your Facebook messages without notifying the sender.

Canonical page: [https://chrome-stats.com/d/facebook-seen-blocker](https://chrome-stats.com/d/facebook-seen-blocker)

## Overview

- **ID:** `facebook-seen-blocker`
- **Platform:** Firefox
- **Type:** Firefox add-on
- **Status:** Available
- **Publisher:** Morni
- **Category:** privacy-security,social-communication
- **Daily users:** 472
- **Weekly downloads:** 4
- **Rating:** 3.58 / 5 (31 ratings)
- **Version:** 0.1.6resigned1
- **Last updated:** 2024-04-25
- **First published:** 2015-02-22
- **Size:** 70 KB
- **Data as of:** 2026-09-13
- **Store listing:** [Firefox Add-ons Store](https://addons.mozilla.org/firefox/addon/facebook-seen-blocker/)
- **Website:** [https://github.com/cluclead/seen-blocker](https://github.com/cluclead/seen-blocker)

## Description

**Seen Blocker for Facebook™** is a Chrome extension designed to enhance your privacy on Facebook Messenger. It allows you to read messages without marking them as "Seen," thus preventing the sender from knowing you've read their message. Simply activate the extension via the toolbar button—it turns green when enabled—and it will block Facebook's read receipt requests. Your privacy settings persist across browsing sessions, ensuring consistent control over your message visibility. This lightweight extension offers an easy and effective way to read Facebook messages discreetly without notifying others, making it ideal for users who prefer to manage their interactions privately.

## Rankings

- #5,255 — Overall
- #25 — facebook
- #104 — messages
- #112 — fact
- #124 — message
- #141 — ad blocker

## Permissions and access

### Permissions

- `storage`
- `tabs`
- `background`
- `webRequest`
- `webRequestBlocking`
- `*://www.facebook.com/ajax/mercury/change_read_status.php`
- `*://www.facebook.com/ajax/messaging/typ.php`

## Safety

- **Risk impact:** High risk impact
- **Risk likelihood:** Low 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).

## Review summary

### Pros

- Has always worked fine with Firefox on Windows previously
- Does what it says
- Some users found it nice and good

### Cons

- Not working as of March 2024
- Does not work in the new Facebook version
- Doesn't work on messenger.com
- Hasn't worked for years

## Similar extensions and apps

- [FB unseen](https://chrome-stats.com/d/facebook-unseen) — 1,981 users, 3.82 / 5
- [AdBlocker for Facebook™](https://chrome-stats.com/d/adblocker-for-facebook-tm) — 2,737 users, 2.68 / 5
- [No Seen – for Facebook and Instagram](https://chrome-stats.com/d/no-seen) — 418 users, 3.50 / 5
- [Message Seen Disable for Facebook™](https://chrome-stats.com/d/facebook-message-seen-disable) — 542 users, 3.11 / 5
- [Facebook utils](https://chrome-stats.com/d/facebook-utils) — 34 users, 4.75 / 5
- [Sponsor Blocker for facebook.com](https://chrome-stats.com/d/facebook-sponsor-blocker) — 34 users, 1.00 / 5
- [Disconnect for Facebook™ (WebExtension)](https://chrome-stats.com/d/facebook-disconnect-ii) — 1,424 users, 4.60 / 5
- [Ad Blocker for Facebook™](https://chrome-stats.com/d/fb_ad_block) — 3,542 users, 3.03 / 5
- [Facebook Container](https://chrome-stats.com/d/facebook-container) — 758,011 users, 4.45 / 5
- [zuckBlock](https://chrome-stats.com/d/zuckblock) — 1 users
- [Social Media Content Blocker](https://chrome-stats.com/d/social-media-content-blocker) — 11 users, 5.00 / 5
- [Facebook Friend Anonymizer](https://chrome-stats.com/d/facebook-friend-anonymizer) — 1 users

---

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