A site blocker that closes a tab if a blocked site is loaded.
Sites can be whitelisted or blacklisted with regular expression rules and if a site is matched it is 'blocked'.

Whitelist-Blacklist-Blocker: Site blocker for Firefox
Whitelist-Blacklist-Blocker is a site blocker Firefox add-on that automatically closes tabs if a blocked site is detected. It allows users to create regular expression rules to whitelist or blacklist sites for better productivity and reduced distractions. The add-on can be easily updated via the toolbar-icon, and future improvements are planned to enhance the user experience.
Add-on stats
Manifest V2
Weekly download count: 9
Firefox on Android: No
Permissions:
- storage
- tabs
Size: 11.70K
Full description: See detailed description
Ranking
Other platforms
Not available on Chrome
Not available on Android
Not available on Edge
User reviews
by 敬念法轮大法好远离瘟疫, 2025-03-03
Very minimalist and precise.
Suggestion: I could give you a prompt to tell that the tab is being closed by the add on, just to make sure that is not a bug on my browser.
by VDalmolin, 2024-11-05
Works perfect for me because of its precision
by Juan, 2024-02-01
Add-on safety
Risk impact
Whitelist-Blacklist-Blocker requires a few sensitive permissions. Exercise caution before installing.
Risk impact analysis details
- Critical Grants access to browser tabs, which can be used to track user browsing habits and history, presenting a privacy concern.
- Low ******* ****** ** *** ********* ********
Risk likelihood
Whitelist-Blacklist-Blocker has earned a fairly good reputation and likely can be trusted.
Risk likelihood analysis details
- High This extension has low user count. Unpopular extensions may not be stable or safe.
- Low **** ********* *** ******* **** **** * ****** **** ***** ******** *** **** ****** ** ** ****** *** *****
- Low **** ********* *** ***** **** **** * ****** **** ***** ********** *** **** ****** ** ** ****** *** *****
- Good **** ********* *** **** **** *******
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Similar add-ons
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