Intercept & Modify HTTP Requests
Modify Headers, Redirect URLs, Switch Hosts, Mock API Response, Delay Network requests, Insert Custom Scripts and much more.
900+ Reviews
150,000+ Happy UsersWhat is Requestly?
Requestly is a lightweight proxy available as a browser extension & desktop app to intercept & modify network requests. Using Requestly you can Mock API Responses, Modify Headers, Redirect Url, Delay/Throttle requests, etc. Developers can collaborate by sharing rules with each other.
200,000+
Rules Created
150,000+
Current Users
10,000+
Rules Shared
Powerful & Easy to Use Debugging Tool
Quickly dive into the network level to diagnose and fix problems with Requestly debugging features.
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
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
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
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
Collaborate with team mates
Instantly share rules and collaborate with your teammates and other developers.Read More
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 & Wildcard 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.
Mock Server
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.
Customer Success Stories
Kushagra Gour, Frontend Lead
“My team uses Requestly to test local changes on Customers’s websites and ensure we deploy no-breaking changes in production.”
Nitish Mittal, Director of Engineering
“Requestly is one-stop solution for all our testing & debugging needs at Wingify. Collaboration feature works like a Charm.”
Michael Levinson, CPO & Co-Founder
“Requestly not just made it easier for us to develop, test & debug our code on our customer sites but It also helps us do engaging product demos to our prospective clients.”
Wall of Love
We are proud of 150K+ happy users. Hear what they say about us.
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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.
Get to know Requestly
Become a 10x developer by using Requestly in your development & testing workflows.