Open Source
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
01
Remove or Update the Content-Security-Policy HTTP header to enable script injection or third-party loading scripts.
02
Override CORS response headers with proper values to fix the CORS Issues in your local development & testing.
03
Remove the X-Frame-Options response header on sites to enable embedding in Iframe.
04
Add or update authorization header and forward JSON Web Token to auto authenticate.
05
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.
Redirect URL (Map Remote)
Redirect a request URL to another URL. e.g. Load local scripts in the production sites for faster debugging.
Override API Response
Test edge cases in your app by simulating API responses. Override XHR, fetch and AJAX responses.
Inject Custom Scripts
Add Custom JavaScript (JS) to Hide unwanted sections, add action buttons, inject your own libraries, etc.
Modify HTTP Headers
Add, Delete, Override Request & Response Headers. Can be used to remove X-Frame-Options, Content-Security-Policy, CORS Issues, etc.
Modify Query Params
Insert, Modify or Delete query parameters for URLs (or matching pattern). Burst cache for a request by assigning it a newer version.
Delay HTTP Requests
Simulate lag / delay to the response from specific URLs in a single click by using Requestly’s Delay Request Rule. No need to modify actual server.
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 ❤️
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)
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.
Requestly is an incredibly useful tool for developers working on a large team with multiple staging envs, or numerous app endpoints for various APIs in a local environment. The Sessions feature is especially useful for documenting solutions or sharing with others since it captures the relevant network traffic, and screen recording enables others to easily reproduce. Requestly combines all the power of complicated tools like Charles Proxy and Postman in one app/chrome extension. I highly recommend giving it a try if you haven’t already–it will make your dev work so much easier. (Summarized)
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.
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.
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
App works as expected! Ran into some small issues while creating the rules but the support team was able to help and overcome those.
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.
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.
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.
Modifying requests and/or responses is the killer feature area for me. Redirect JS in prod, generate mocks, modify headers, map local, map remote, SessionReplay, Load a local JS bundle, override scripts, etc. etc. etc. – TOTALLY worth it and very useful.