Intercept & Modify HTTP(s) Requests
Modify Headers, Redirect URLs, Switch Hosts, Mock API Response, Delay Network requests, Insert Custom Scripts and much more.
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or use with Selenium
Empowering 125K+ developers & testers to debug & modify network requests at 500+ organizations.
200k+
Rules Created
100k+
Current Users
10k+
Rules Shared
What is Requestly?
Requestly is a lightweight proxy available as a browser extension & desktop app to intercept & modify network requests. Using Requestly you can Modify Headers, Redirect Url, Mock API response, Delay/Throttle requests, etc. Developers can collaborate by sharing rules with each other.
Modify Headers
Add, Delete or Replace request & response headers. Can be used to test X-Frame-Options, Content-Security-Policy, Add authorization headers, debug CORS etc.Read More
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Redirect URL
Redirect requests matching a URL pattern to different destination URL. Can be used to load unminified scripts, test different library versions, load local version of script in production env etc.Read More
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Insert Custom Scripts
Allows you to automate, scrape & change webpage's behaviour with little knowledge of JS & CSS. Use File Hosting service to upload long scripts and get a URL to be used in your websites or Requestly rules.Read More
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Mock API Response
Return custom (mocked) response for your API requests. Can be used to test API changes, newer API version in your app.Read More
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Additional Features
Multiple Rule Types
Requestly supports multiple rule types to cater your need of modifying network request, including Redirection, User Agent Modification, Script Insertion, Resource Blocker, Header Modification etc.
Regex & Wildcart Support
Requestly has rich interface to provide url matching conditions. Multiple Operators are supported - Equals, Contains, Regex (Matches) and Regex with wildcard too.
Activation/Deactivation
Requestly provides single click activation and deactivation of entire extension, individual rule groups or rules. Mark the rule as inactive when you don't need it for sometime.
Easy Collaboration
Users can easily collaborate with other users by sharing rules between them and improve the way they work together.
Files Library
Requestly allows uploading, creating and managing js, css, json etc files which can be used in Requestly rules. No need to setup local server now.
Data Backup
Requestly allows you to take backup of your data either by downloading rules as text file or generating a link.
Wall of Love
We are proud of 125K+ happy users. Hear what they say about us.
A while ago I posted this for changing resource URLs for local debugging: https://bit.ly/3gWRwZ4 Since then I've switched to using @requestly_ext instead for Chrome: easy on/off toggling and I can use it to debug with the local version of my libraries on remote websites too!
Lea Verou W3C member, Author CSS Secrets
Requestly just works :) We are one of the paid users. We have been using Requestly to debug SendX Javascript API on our client's websites and Requestly has saved ton of debugging time for us.
Varun Jain Co-Founder @ SendX
I'd rate it as one of the best extensions around to boost developer productivity. Even if you're not a developer but need to navigate through loads of seemingly similar web pages, it is highly recommended with a very small learning curve.
Mukul Gupta Senior Software Engineer at Adobe
A really good app for web developers. I'm going to make it a must-use app among my reportees.
Kunal Chitkara Engineering Manager @ RoadZen
This extension has made my developer life much simpler. I recommend it to all my colleagues. Thank you
Shagun Sodhani Researcher at Facebook AI
Thank you for making this great addon. I just checked out Requestly and indeed it is very easy to set up. It helps me customize my browsing experience entirely. Keep up the great work!
Kos Breton Director (Management) at Coinbase
This is a killer extension. So many good use cases. We use it often.
Ben Munk Founder, Product Manager at Sifta
It allows me to convert my Chrome browser into a supercharged development tool by creating advanced rules to modify the requests that the website is making. Very useful to quickly tweak API parameters and image resolutions without any code change!
Param Aggarwal Software Engineer at CureFit
Awesome tool, it is being used by my whole team. 'Export rules' feature is great !!
Lalit Sharma Senior Manager Microsoft
Frequently Asked Questions
Go to Requestly Chrome Store Page or Requestly Firefox Add on or Requestly Microsoft Edge Add on and click on Install Now button. Now you can use all the Free Features of Requestly and in case you face limits or need some paid features you can opt for a Premium plan which suit best for your use case.
Learn to use Requestly
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