Modify HTTP Request & Response Headers

Requestly is the most popular browser extension to modify HTTP request and response headers. Trusted by 200,000+ users, Requestly can help you add, remove or override HTTP headers.

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Conditionally add or remove HTTP headers

Setup URL matching patterns to conditionally add, remove or override HTTP Request & Response headers.

Add HTTP Headers

Effortlessly add custom HTTP headers to your requests with a few simple clicks

Remove HTTP Headers

Remove headers from your HTTP request or response to test and debug

Override HTTP Headers

Override a header utilizing original request or response header values

What can you do with modifying headers


Manage Content-Security-Policy

Remove or Update the Content-Security-Policy HTTP header to enable script injection or third-party loading scripts.


Bypass CORS

Override CORS response headers with proper values to fix the CORS Issues in your local development & testing.



Remove the X-Frame-Options response header on sites to enable embedding in Iframe.



Add or update authorization header and forward JSON Web Token to auto authenticate.


Insert Custom Headers

Insert custom HTTP request headers (e.g. x-userId) on your API endpoints

Additional Features

1-click options to setup Requestly in your daily workflow

Share Rule with others

Generate a public shareable link in 1-click or directly invite members in your team.

Selenium & Cypress Integration

You can use Requestly in your automation testing with Selenium & Cypress frameworks.

Advance filters

Advance conditions and filters allow you to target specific requests only.

Intercept & Modify HTTP Requests

Boost Your Web Development: Advanced Tools for Seamless Debugging.

More Awesome Features

An open-source platform that speeds up your web development cycle 10X faster.

Session Recording

Data rich bug reporting with Network logs, Console logs, Session Video and environment details. Share it with your Engineering team for faster debugging.

Mock API Server

Generate custom API responses without actually having a pre-built API or a backend server. Edit Content-Type, Status Code, Headers, and Response body easily on the Mock Server.

Web-based API Client

A comprehensive and web-based tool for modifying and testing APIs. You can test the Mock APIs you’re creating here to fast track your development lifecycle.

For the developers, by the developers ❤️

From Debug to Deploy: Developers Trust Requestly

Requestly not just made it easier for us to develop, test & debug our code on our customer sites but also helped us do engaging product demos to our prospective clients.

Michael Levinson
Co-Founder & CPO at Joyned

I’m a big fan of Requestly, and use it on a daily basis as a QA Engineer. It removes the need to use Charles Proxy often, which is always nice. I can just use Requestly directly in Chrome

Mike Mitchell
QA Engineer at URBN

App works as expected! Ran into some small issues while creating the rules but the support team was able to help and overcome those.

José Miguel Dias Fernandes
Development Lead at Vodafone

Requestly is user-friendly, brilliant and easy-to-use. I use it on an daily basis and it makes my work easier. After using other tools like Charles – Requestly is a nice new breath of air that I highly vouch for. Apart from the tool being amazing – the support from the Requestly team is phenomenal with them always going above and beyond for their clients.

Marius Ludick
Solutions Architect II at Amazon

Requestly is an amazing tool to get your development work less hassle. The product itself has evolved so much since day-1 and the company is really serious on helping their customer solves their problems. We had this nice session where they shared Requestly features and we were very impressed on its potential. A truly 5-star worthy.

Natchapol Thongruang
Senior Software Engineer at Agoda

Just loved the way Requestly saved several person hours for our dev team by allowing us to redirect and intercept requests. The simple yet efficient rules allowed us to seamlessly redirect requests from a single staging front-end server to local backend servers. This meant that our devs didn’t need to build or run the front-end server locally when focusing on backend tasks.

Srijan Bhatnagar
Senior Software Engineer at Atlassian

Awesome tool. I use it almost daily for my projects to modify request body, headers, etc. Would recommend it to every frontend developer out there. Thank me later 🙂 (Case Study)

Harsh Vats
Frontend Engineer at PingSafe

This is by far the best tool for managing request headers! Plus the developers are very active meaning you’ll get help if you’re ever stuck or need help solving a problem. I use it daily and couldn’t be happier.

Jose Browne
Senior Engineer at Reddit

Requestly is awesome. I used to use Charles proxy in my day-to-day work but it always messed with my wifi. I haven’t had any issues with Requestly. Requestly’s UI is an amazing tool and great to work in.

Carl Hand
Senior Software Engineer at Workday