ModHeader

The most popular Chrome extension to modify headers

** What can ModHeader do?**
- Add / modify / remove request headers and response headers (you can use this to set X-Forwarded-For, Authorization, Access-Control-Allow-Origin: *)
- Conditionally enable header modification based on URL and/or resource type
- Add comments to header
- Support having multiple profiles with quick switching between profiles
- Sorting headers and name, value, or comments
- Append value to existing request or response header
- Export and import header
- Clone profile
- Cloud backup
- Customizable profile badge
- Support "undo" if you made a mistake
- Support adding dynamic value
- Redirect URL with another

For Selenium WebDriver users, please try:

** What is new in 3.1.26 **
- Enable regex URL replacement

** What is new in 3.1.25 **
- Fix rate me URL.

** What is new in 3.1.24 **
- Fix scrollbar issue on having too many profiles

** What is new in 3.1.23 **
- Update home page URL

** What is new in 3.1.22 **
- Dependency upgrade

** What is new in 3.1.21 **
- Fix switch profile carry over filters + headers

** What is new in 3.1.20 **
- Improve save operation reliability

** What is new in 3.1.19 **
- Remove post install welcome page

** What is new in 3.1.17 **
- Remove Infatica integration

** What is new in 3.1.15 **
- Ask for consent before enabling proxy integration

** What is new in 3.1.13 **
- Minor bug fixes

** What is new in 3.1.12 **
- Update UI deps
- Enable empty header value mode
- Change lock icon to text
- Infatica integration

** What is new in 3.1.11 **
- Import from website
- Update dependency and minor enhancements.

** What is new in 3.1.9 **
- Fix dynamic value not working regression

** What is new in 3.1.7 + 3.1.8 **
- Minor bug fixes

** What is new in 3.1.6 **
- Minor enhancements

** What is new in 3.1.5 **
- Bug fixes

** What is new in 3.1.4 **
- Remove headers with empty values

** What is new in 3.1.3 **
- Support multiple active profiles.

** What is new in 3.1.2 **
- Automatically switch to dark icons on light background
- Rename URL replacement to URL redirect

** What is new in 3.1.1 **
- Support dynamic value

** What is new in 3.1.0 **
- Fix headers sometimes not modified in new tab

** What is new in 3.0.9 **
- Reduce UI clustering

** What is new in 3.0.7 **
- Improve UI for the expanded header view

** What is new in 3.0.6 **
- Bring back tab lock to top bar + some minor UI enhancements
- Bring back JSON export

** What is new in 3.0.5 **
- Fix profile switching not working and text alignment.

** What is new in 3.0.4 **
- Optimizations and minor UI enhancements.

** What is new in 3.0.3 **
- Resurrect + button and remove empty section by default.
- Fix input lag on long value
- Fix URL replacement resulting in infinite replacement
- Add client hints

** What is new in 3.0.2 **
- Fix UI based on recent feedbacks

** What is new in 3.0.1 **
- Fix bug in response headers not working properly

** What is new in 3.0.0 **
- Complete UI redesign to improve performance, allow adding headers / filters faster
- Faster profile switching
- Support for undo!
- Profile badge with custom color and text
- Allow exporting and importing profile as a URL

** What is new in 2.5.4 **
- Replace broken ModHeader in 2.5.3

** What is new in 2.5.3 **
- Replace URL

** What is new in 2.5.2 **
- Exclude URL pattern
- Post install thank you redirect

** What is new in 2.5.0 **
- Upgrade AngularJS material version
- Move settings out to the ... menu
- Add expand button to edit longer header

** What is new in 2.4.1 **
- Sort profiles
- Import / export all profiles

** What is new in 2.4.0 **
- Update homepage and help link URL.

** What is new in 2.3.9 **
- Simplify the CORS fix now that Chrome actually document how to fix it.

** What is new in 2.3.8 **
- Add an option to always modify CORS request in Profile Settings

** What is new in 2.3.7 **
- Fix CORS detection bug introduced in 2.3.6

** What is new in 2.3.6 **
- Fix CORS request not working

** What is new in 2.3.5 **
- Fix add profile not working

** What is new in 2.3.3 **
- Fix autocomplete

** What is new in 2.3.2 **
- Update Angular JS dependencies
- UI / backward compatibility fixes for 2.3.0

** What is new in 2.3.0 **
- Support true regex for URL filter
- Add tip of the day


** Permissions **
ModHeader currently requires 5 permissions:
1, "webRequest"
2, "webRequestBlocking"
3, "<all_urls>"
4, "storage"
5, "contextMenus"

"webRequest" and "webRequestBlocking" are required in order for request headers modification to work. Because ModHeader doesn't know ahead of time which website the modification should apply to, it needs to request permissions for all URLs (3). "storage" permission is needed to save settings to the cloud. "contextMenus" is used to enable quick pause/unpause by right-clicking on the icon.

** Donation **

** Source code **

** User guide **

** Privacy Policy **

To find ModHeader on other browsers, visit modheader.com

If you think this extension is useful, please share it! Also consider making a monthly donation!