Modify Header Value (HTTP Headers)

Name: Modify Header Value (HTTP Headers)
Rating: 3.4 (50 reviews)
Author: Grephy

Add, modify or remove a header for any request on desired domains.

As of June 2026, Modify Header Value (HTTP Headers) has 40,000 users and a 3.40/5 rating from 50 reviews in the Developer Tools category.

Grephy Developer Tools★ Featured

Chrome Web Store ↗.crx

Users0%

40.0K

40,000

Rating0%

3.40

50 reviews

Reviews0%

Version

0.2.0

Manifest V3

History

1 snapshots

Tracking since Apr 21, 2026.

View as table

Date	Users	Rating	Reviews	Version
Apr 21, 2026	40.0K	3.40	50	0.2.0
Now	40.0K	3.40	50	0.2.0

Permissions & access

Permissions: storagedeclarativeNetRequest
Host access: <all_urls>

Screenshots

Modify Header Value (HTTP Headers) screenshot 1

Modify Header Value (HTTP Headers) screenshot 2

Modify Header Value (HTTP Headers) screenshot 3

About

Modify Header Value (HTTP Headers) is an extension that can add, modify or remove an HTTP-request-header for all requests on a desired website or URL. This Addon is very useful if you are an App developer, website designer, or if you want to test a particular header for a request on a website.

Key features:
1. Easily add, modify or remove a header for any request on desired domains.
2. For a complete list of HTTP headers, please take a look at the list of all HTTP Header Fields on the Wikipedia page (https://en.wikipedia.org/wiki/List_of_HTTP_header_fields).
3. Clicking on the Toolbar icon opens a UI to quickly switch the Addon ON or OFF, or open the options page.
4. Each header item has several options to adjust (see add-on's Options page for details)
5. You can add several header items and active or inactive them separately.
6. An example in the options page shows a tutorial on "How to add a custom header".

Note: to report bugs, please visit addon's homepage (https://mybrowseraddon.com/modify-header-value.html) and fill out the bug report form.