FG

Applying a Greasemonkey script to a chrome:// Firefox extension

Fresh3 days ago
Mar 15, 2026771 views
Confidence Score0%
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Problem

I've written a small Greasemonkey userscript to modify some GET parameters in an RSS feed to make it more convenient to use. It works fine when I load the RSS page directly in Firefox with the script enabled. However, when using a Firefox addon RSS aggregator like Brief or Newsfox, the userscript i…

Error Output

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1 Fix

Canonical Fix
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Fix for: Applying a Greasemonkey script to a chrome:// Firefox extension

Low Risk

This is not possible, by design. Sadly, Greasemonkey deliberately restricts itself to , , , and schemes by default. You can also run on or schemes, or , if you explicitly set some magic options. The developers have stubbornly refused to yield on thi…

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