Blocks the ”seen” feature of the facebook messenger, and your friends will no longer be able to see if you read their messages.
- By:
- Horizonsoft
- Daily users:
- 2,379 -30
- Rating:
- 3.82 (99)
- Version:
- 2.1resigned1 Last updated: 2024-04-25
- Version code:
- 5726918
- Creation date:
- 2016-06-30
- Risk:
- High risk impact Moderate risk likelihood
- Permissions:
- webRequest
- webRequestBlocking
- *://*.facebook.com/*
- *://*.messenger.com/*
- webRequest
- Size:
- 183.00KB
- Email:
- in*****@fbunseen.com
- URLs:
- Website ,Privacy policy
- Full description:
- See detailed description
- Source:
- Firefox Browser Add-ons
- Data ingested on:
- 2025-07-12
User reviews
Pros
- Was very easy to use and worked well when functional.
- Helped prevent sending read receipts on Facebook Messenger.
- Appreciated by longtime users for its purpose.
Cons
- Currently does not work with the new Facebook design and updates.
- No updates or support since around 2017, leading to it being effectively dead.
- Causes Facebook Messenger to be disabled or not functional when enabled.
- Users report it being useless and blocking Messenger connection.
Recent reviews
by 远离*****, 2025-04-06
doesnt work at all
by Sh*****, 2025-03-12
by 远离*****, 2025-02-13
Extension safety
Risk impact
Risk impact measures the level of extra permissions an extension has access to. A low risk
impact extension cannot do much harms, whereas a high risk impact extension can do a lot of
damage like stealing your password, bypassing your security settings, and accessing your
personal data. High risk impact extensions are not necessarily malicious. However, if they
do turn malicious, they can be very harmful.
FB unseen requires some sensitive permissions that could impact your browser and data security. Exercise caution before installing.
Risk impact analysis details
- Critical Request access to the following domains: {{requestedDomains}}
- High ****** *** ********* ** ******* *** ******* ******* ** ****** *** *** ******** ******
- High ******* ******* **** *** ****** ***** *** ***** ** ******* **** ********* ********* ** * *********** *****
Risk likelihood
Risk likelihood measures the probability that a Firefox add-on may turn malicious.
This is determined by the publisher and the Firefox add-on reputation on
Firefox Browser Add-ons, the amount of time the Firefox add-on has been
around, and other signals about the
Firefox add-on. Our algorithms are not perfect, and are subject to change
as we discover new ways to detect malicious extensions. We recommend that you always
exercise caution when installing a Firefox add-on.
FB unseen is probably trust-worthy. Prefer other publishers if available. Exercise caution when installing this add-on.
Risk likelihood analysis details
- High This extension support email may not be valid
- High **** ********* *** *** **** ****** ********* ********** *** *** ** ****** ** *****
- Low **** ********* *** ******* **** **** * ****** **** ***** ******** *** **** ****** ** ** ****** *** *****
- Low **** ********* *** ***** **** **** * ****** **** ***** ********** *** **** ****** ** ** ****** *** *****
- Good **** ********* *** **** **** *******
Upgrade to see full risk analysis details
Compare add-ons
- Compare FB unseen vs Hide Facebook Reactions
- Compare FB unseen vs Facebook Ad Remover
- Compare FB unseen vs tame
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