Header Editor by 泷涯, 道滿

Please do not write regular expressions that begin with (. *), (. *?), (. +), such regular expressions may cause problems with Firefox

With this extension, you can modify the request header and response header, cancel a request and redirect a request.

It's 100% FREE, no ADs, no data collection.

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If you want to experience the latest version at the first time, you can install our self-distribution version here