Android Add-ons
Welcome to Firefox for Android Add-ons.
Add extra features and styles to make Firefox for Android your own.
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![[Warning]](https://addons.thunderbird.net/static/img/developers/test-warning.png?b=58a99cbb-667a0970)
Permissions
About this Add-on
Minimum and fast URL blocking by regular expressions.
*Create contentblock-regex.txt in profile folder and write regular expressions to block matching URLs.
*contentblock-whitelist-regex.txt for white list.
*Restart Firefox to reload files.
*See error console or browser console for blocker results.
(Disabled by default. Toggle extensions.silentblock.logging.enabled .)
*No GUI.
About location of profile folder see Mozilla Support document.
To use custom folder, open about:config and specify the full folder path in extensions.silentblock.altdir . This is useful for mobile devices.
For details of Firefox's regular expression see MDN document.
*Create contentblock-regex.txt in profile folder and write regular expressions to block matching URLs.
*contentblock-whitelist-regex.txt for white list.
*Restart Firefox to reload files.
*See error console or browser console for blocker results.
(Disabled by default. Toggle extensions.silentblock.logging.enabled .)
*No GUI.
About location of profile folder see Mozilla Support document.
To use custom folder, open about:config and specify the full folder path in extensions.silentblock.altdir . This is useful for mobile devices.
For details of Firefox's regular expression see MDN document.
