ModHeader promo image

ModHeader ModHeader

Modify HTTP request and response headers

ModHeader is a featured Chrome extension by It has 600,000+ weekly active users and an average rating of 4.06. ModHeader is similar to Modify Header Value (HTTP Headers) and Postman Interceptor. The latest version is 4.0.21 and was updated 14 days ago. ModHeader is only available in English. Within Chrome Web Store, its overall ranking is #417.

The most popular Chrome extension to modify headers

** What can ModHeader do?**
- Add, modify, and remove request and response headers
- Use ModHeader to set X-Forwarded-For, Authorization, Access-Control-Allow-Origin, Content-Security-Policy, and your custom headers!
See more
Risk impact

ModHeader requires a lot of risky permissions. Exercise caution when installing this extension. Review carefully before installing. We recommend that you only install ModHeader if you trust the publisher.

Risk impact measures the level of extra permissions an extension has access to. A low risk impact extension cannot do much harms, whereas a high risk impact extension can do a lot of damage like stealing your password, bypass your security settings, and access your personal data. High risk impact extensions are not necessarily malicious. However, if they do turn malicious, they can be very harmful.

Risk likelihood

ModHeader is well trusted and should be safe to install.

Risk likelihood measures the probability that a Chrome extension may turn malicious. This is determined by the publisher and the Chrome extension reputation on Chrome Web Store, the amount of time the Chrome extension has been around, and other signals about the Chrome extension. Our algorithms are not perfect, and are subject to change as we discover new ways to detect malicious extensions. We recommend that you always exercise caution when installing a Chrome extension, especially ones with higher risk impact and/or higher risk likelihood.

Subscribe to the premium plan to see more risk analysis details
User reviews
This extension is so bad. If I'm modifying the value of the header I want to set, the update does not work, a lot of the time. It won't update. Not only that, sometimes updating a value will just cause the extension to straight up stop working, i.e. the headers are not set at all.
by Ling Long Ling Long, 2022-09-12

I saw that this extension used to host malware, introduced by the author himself. Even if it is gone now, it can never be trusted again. Shame!
by Jonas Müller Jonas Müller, 2022-08-22

cannot add profile
by Derek Lam Derek Lam, 2022-07-28
View all user reviews
Promo images
ModHeader large promo image
Large promo image
ModHeader small promo image
Small promo image
Similar extensions
Modify Header Value (HTTP Headers) Modify Header Value (HTTP Headers)
Publisher: Grephy
User count: 40,000+
Rating: 35
Add, modify or remove a header for any request on desired domains.
Postman Interceptor Postman Interceptor
User count: 700,000+
Rating: 933
Sends requests fired through the Postman chrome app.
Redirect URL, Modify Headers & Mock APIs Redirect URL, Modify Headers & Mock APIs
User count: 100,000+
Rating: 976
Web Debugging Proxy to Intercept & Modify HTTPs Requests - Redirect URL, Modify Headers, Mock APIs, Modify Response, Insert Scripts
  "update_url": "",
  "manifest_version": 2,
  "name": "ModHeader",
  "version": "4.0.21",
  "description": "Modify HTTP request and response headers",
  "homepage_url": "",
  "background": {
    "scripts": [