First Party Isolation
This add-on enables the First Party isolation pref.
Clicking the Fishbowl icon temporarily disables it.
What is First Party Isolation?
A concept from the Tor Browser, 'First Party Isolation' is a significant privacy measure. This Firefox add-on enables users to enhance their online privacy by keying every source of browser identification with the originating domain (first party), making all access to identifiers distinct between usage on the website itself and via third-party sources. In essence, it is a powerful alternative to blocking third-party cookies that works more comprehensively.
Add-on stats
By: freddyb
Rating: 4.14
(43)
Creation date: 2017-10-20
Weekly download count: 14
Firefox on Android: Yes
Risk impact: Low risk impact
Risk likelihood: Low risk likelihood
Manifest version: 2
Permissions:
- privacy
Size: 112.09K
URLs: Website
Ranking
# 1927 ▼ 1
Other platforms
Not available on Chrome
Not available on Edge
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Add-on summary
This add-on enables First Party isolation. Clicking the Fishbowl icon or removing the add-on disables it again.
First Party Isolation, also known as Cross-Origin Identifier Unlinkability is a concept from the Tor Browser. The idea is to key every source of browser identification with the domain in the URL bar (the first party). This makes all access to identifiers distinct between usage in the website itself and through third-party. Think of it as blocking Third-party cookies, but more exhaustively. Here are Firefox's implementation details about First Party Isolation.
User reviews
These summaries are automatically generated weekly using AI based on recent user reviews.
Firefox Browser Add-ons does not verify user reviews, so some user reviews may be inaccurate,
spammy, or outdated.
Pros
- Easy to enable/disable
- Works well with other privacy add-ons
Cons
- Problems on Ubuntu Linux
- Apple iCloud not loading
- Difficulty enabling FPI without restarting extension
Most mentioned
- Easy to enable/disable
- Works as expected
- Issues with Apple iCloud
- Works well with other privacy add-ons
Recent reviews
by Dennis50300, 2024-07-27
by Dennis50300, 2024-07-27
by Firefox user 17867194, 2023-04-16
Add-on safety
Risk impact
First Party Isolation is relatively safe to use as it requires very minimum permissions.
Risk likelihood
First Party Isolation has earned a fairly good reputation and likely can be trusted.
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