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simple-modify-headers

Extension Actions

CRX ID
gjgiipmpldkpbdfjkgofildhapegmmic
Status
  • Extension status: Featured
Description from extension meta

Simple Modify headers

Image from store
simple-modify-headers
Description from store

The extension rewrite the headers based on a rules table.

It's possible to:

add , modify or delete header field for HTTP(S) request or response
export the configuration in a file (json format)
import the configuration from a file
choose urls on which the modifications applies

In order to work, the following extension permissions are needed :

storage : needed to store the configuration
activeTab, tabs : needed to show the configuration screen in the browser tab.
webRequest,webRequestBlocking,<all_urls> : needed to modify the headers

More information on https://github.com/didierfred/SimpleModifyHeaders

The code is opensource under Mozilla Public License 2.0

Latest reviews

Yury Pavlovsky
Fails to modify response headers
Andreas Kaiser
Works like a charme. We are using this extension for switching dev mode for some domains. Super easy. And no ads! Thanks!
Support Analytics RESONEO
April 2025: doesn't seem to work anymore... I can't get any Header to be added or modified. Too bad
Harry King
Set it up and forget about it. No ads!
Pilot Man
add resource type feature also
Sergii Stef.
it works! and free. thanks!
Felipe Esteves
The results were precisely what I needed for my testing purposes.
Andres Herrera
It works and is simple! I had a problem with an old web app that doesn't work when the browser is in a language other than Spanish, but I didn't know it. I used ChatGPT, and with it, I figured it out. GPT suggested I install an extension to modify the Accept-Language in request headers, and this is the one I used. Now, the web app works as expected.
Vlad B
It works, OSS rules!
Rémi FLAMENT
Perfect and open source !
Booskanium Booskaland
good
Rasmus Bertelsen
This now breaks YouTube.
Rasmus Bertelsen
This now breaks YouTube.
Prashant Negi
Many YouTube videos show "An error occurred. Please try again later. (Playback ID: ___)", then i have to refresh the page again for the video to play. This is solved by disabling the last 4 YT headers. Please include the ability to block certain sites.
Михаил Шараевский
It works as described. Simple and clear. Open source. What's missing is a more functional popup with the ability to switch headers.
Михаил Шараевский
It works as described. Simple and clear. Open source. What's missing is a more functional popup with the ability to switch headers.
Dark Anubis
Me ha funcionado bastante bien, el reemplazo ideal para quienes usabamos ModHeader antes de su limitación en funcionalidades.
D G (TachikomaGT)
Don't adding a header on redirect requests.
D G (TachikomaGT)
Don't adding a header on redirect requests.
Андрей Кузнецов
Convenient and functional extension. My only wish: Enable the ability to have multiple data (rules) profiles, at least so that the old data is not erased during import.
Андрей Кузнецов
Convenient and functional extension. My only wish: Enable the ability to have multiple data (rules) profiles, at least so that the old data is not erased during import.
Julian Castro
works, wish it had a regex/js way of writing values based on URL or other variables
Julian Castro
works, wish it had a regex/js way of writing values based on URL or other variables
Soulike
very useful
Soulike
very useful
Jamie Moore
Tried the others, this is the best header rewrite tool there is. Very impressed.
Jamie Moore
Tried the others, this is the best header rewrite tool there is. Very impressed.