To use these add-ons, you'll need to download Firefox.

Qqen
Tignit n uzegrir

Iceggiren i Header Editor

Header Editor sɣur 泷涯, 道滿

4,7 n yitran ɣef 5
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Icegger-it Orion
sɣur Orion, för 3 år sedan
No documentation at all, and seems all Match types except option "All" are not working.
Also, it does not allow to modify more than one header in one rule.