Best Modify Header Value (HTTP Headers) Alternatives ranked by AI · updated Aug 2026

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Modify Header Value is a browser extension for changing HTTP request header values during web development and testing. It provides a lightweight way to add, edit, or remove headers without running a separate proxy.

Developer: Girish Kumar Price: Free 🎯 mybrowseraddon.com/modify-header-value.html

Debugging 💻 Web Development browser tools http headers

Top 6 Modify Header Value (HTTP Headers) alternatives

ModHeader

💡 Pick it for reusable profiles, conditional rules, and broader header-editing features.

ModHeader is a browser extension and web tool for viewing and modifying HTTP request and response headers. It is aimed at web...

Pros

Can modify headers as well as inspect them
Supports reusable profiles and conditional rules
Available for major browsers and more capable than a simple header viewer

Cons

More complex to configure than HTTP Header Spy
Advanced features require a paid plan
Browser-extension permissions may concern privacy-sensitive users

Freemium

Alternatives to ModHeader → Visit site

Requestly

💡 Choose it when header edits need to work alongside redirects, API mocks, or shared team rules.

Requestly is a powerful tool to modify network requests. It can be used for URL redirection, header modification, modifying response data, etc.

Free with paid plans available

Alternatives to Requestly → Visit site

mitmproxy

💡 Pick it for a free, scriptable proxy that can modify traffic from browsers and other devices.

mitmproxy is a free and open-source interactive HTTPS proxy.

Free

Alternatives to mitmproxy → Visit site

HTTP Toolkit

💡 Use it when you need visual traffic inspection and request rewriting across multiple clients.

HTTP Toolkit is a suite of tools designed for debugging, testing, and building with HTTP(S). It provides powerful features for monitoring and...

Pros

Rich set of features for HTTP debugging
User-friendly interface

Cons

Some advanced features are paid-only
May be overwhelming for beginners

Free / Paid

Alternatives to HTTP Toolkit →

Charles Proxy

💡 Choose it for a mature cross-platform proxy with breakpoints, throttling, and mobile traffic support.

Charles Proxy is a web debugging proxy application that enables developers to view all HTTP and SSL/HTTPS traffic between their machine and...

Starting from $59/year

Alternatives to Charles Proxy → Visit site

Header Editor

FirefoxBar

💡 Pick it for a free, open-source extension with configurable header rules.

Header Editor is an open-source extension for modifying HTTP request and response headers and redirecting URLs. It serves developers and advanced browser...