Free, Simple, & Powerful Alternative to ModHeader

Modheader is a browser extension that allows users to modify HTTP request headers, enabling them to test and debug web applications more effectively. It provides a simple interface for adding, modifying, and removing headers for any HTTP request.

On the other hand, Requestly is a powerful tool that goes beyond just modifying headers. It allows users to set up rules for modifying URLs, injecting scripts, and redirecting requests, thus offering a more comprehensive solution for web debugging and testing. Unlike Modheader, Requestly provides a broader range of functionalities, including the ability to manipulate both request and response data, making it a more versatile tool for developers.

Comparing Requestly vs. ModHeader

Using ModHeader, you can modify http request headers. However, Requestly offers a complete web debugging solution for developers.

Features

ModHeader

Requestly

Team collaboration

Mock Server

Browser Extension

Desktop App

Android Debugger

Modify API Response

Query Param Modification

Session Recording

Download for Chrome

Our Users Tell a Better Story

Requestly is used by more than 180,000 developers from 4000+ organizations around the world. We take a lot of pride in providing the best support to our users and making them successful by building the best web debugging solution. Our users love us and so will you.

Was looking for an extension that could redirect/modify header requests, this was the first thing that popped up. I'm not an expert in web dev, and was having a slight issue getting started. Luckily there is a chat feature for assistance, and it turns out the CEO gave me a helping hand to get exactly what I needed! So far this is one of the best extensions I've seen in a long time!

This is an amazing plugin. I also use the desktop application on my mac to modify headers for traffic that comes from Safari or other applications. Works like a charm! I don't know of other tools with the same capability, better than Charles Proxy!

This has been a godsend tool to play around with headers, especially when doing development. Saves a lot of time while developing something and not having to fiddle around with separate config files, just setup your group for say local/stage/prod dev and it magically routes URLs to the correct environments. Best bit is the modify http response, to stub APIs and do web development without having to worry about backends being ready for consumption and also saves up battery to not have to run a backend server at all times, and also helps setup the same API calls for writing tests. Thank you devs for creating such an awesome product!