Product
API Client

A lightweight and secure API Client for faster API Development & Testing

HTTP Interceptor

A Powerful HTTP Interceptor to Intercept, Record, Debug & Modify HTTP Requests

API Mocking

Build frontend faster without waiting for backend.

Use Case
Frontend Web/Mobile Developers

Requestly improves front-end workflows with local JS testing, mocking, and SessionBook debugging.

For QA engineers

QA engineers love Requestly for its features and ease of use, allowing easy edge case testing.

Support Engineer

Support engineers value Requestly for debugging, demoing, and overriding GTM and Adobe scripts.

Backend Developers

Requestly helps in improving back-end development workflows, by enabling testing.

Requestly vs Postman
Resources
Pricing
Blog
Case Studies
Status
Github
Release Note
Student Programme

📣 Requestly API Client – Free Forever & Open Source. A powerful alternative to Postman. Try now ->

Insights
Product Updates
Use Cases
Announcements
Case Studies

Blog

Requestly blog

Explore easy to follow tutorials, real-world case studies, and behind the scenes insights into the features we build and the developers who bring them to life.

Requestly security and compliance

Announcing Requestly’s SOC 2 Type II Compliance Certification

Requestly is now SOC 2 Type II certified, ensuring enhanced data security and trust for our users. Learn more about our commitment to data protection.
Sachin Jain
September 26, 2024

Featured posts

Announcing No-Bug November: Get Paid to Squash Bugs & Land a 2026 Internship!
Join No-Bug November — a month-long bug bash to make Requestly faster and more stable. Fix bugs, earn bounties, win swags, and even land internships!
Akanksha Bhadauria
November 10, 2025
That’s a Wrap on Hacktoberfest 2025: Our Success Story
Requestly’s first Hacktoberfest was a huge success! 🎉 15 new contributors, 28 total contributions, and an incredible mix of code & no-code creativity.
Akanksha Bhadauria
November 5, 2025
AB Tasty scales testing and demos with Requestly
AB Tasty accelerates testing and demos with Requestly—switching environments, injecting scripts, and personalizing sites in seconds.
Akanksha Bhadauria
October 16, 2025

All posts

working with graphql apis using requestly
Debug & Mock GraphQL APIs using Requestly
Requestly helps you in intercepting & modifying the APIs on the fly using HTTP Rules. You can apply these rules to any HTTP Request including GraphQL APIs.
Sagar Soni
March 1, 2024
How to Inject Javascript on a webpage with custom attributes in script tag
Insert script with attributes like defer, async, nomodule, crossorigin, integrity, referrerpolicy, data-*, etc.
Sagar Soni
February 27, 2024
Understanding Redirect Rule
Dinesh Thakur
February 24, 2024
modify api response rule
Understanding Modify API Response Rule
The Modify Response Rule enables you to modify the response body of an HTTP request. The rule is equally important for developers and testers.
Sagar Soni
February 23, 2024
Understanding Modify Request Body Rule (REST & GraphQL)
Learn how to use the Modify Request Body rule in Requestly to tweak request data, including REST and GraphQL—for testing, debugging, and development.
Kanishk Rawat
February 23, 2024
insert script rule
Understanding Insert/Inject Script Rule
Learn how to use Requestly’s Insert/Inject Script Rule to modify web pages on the fly for testing and development.
Sagar Soni
February 15, 2024
Understanding Replace Rule (Switch Hosts)
Learn how to use Requestly’s Replace Rule to modify URLs on-the-fly for testing and debugging. Switch hosts, change API versions, and more.
Sagar Soni
February 14, 2024
Understanding HTTP Rules – Intercept & Modify HTTP Requests & Responses
Requestly enables modification of header, path, query parameters, status codes & body of Request & Response to accelerate software development and testing.
Sagar Soni
February 14, 2024
getting started with requestly
Getting Started with Requestly
Requestly accelerates building, debugging & testing web applications with API Client, Mock Server, HTTP Rules & SessionBook. A reliable Agile Development tool.
Sagar Soni
February 7, 2024
Streamlining Frontend Development: A Developer’s Journey with Requestly at PingSafe
Learn how PingSafe uses Requestly to eliminate hardcoded API responses and accelerate frontend development, improving efficiency and reducing errors.
Dinesh Thakur
February 2, 2024
Sunsetting Android Debugger SDK
Requestly is sunsetting its Android Debugger SDK on February 15, 2024. Learn why and explore alternative solutions for your Android development needs.
Sagar Soni
January 31, 2024
Accelerate frontend development with these Requestly features
Speed up your frontend development and testing with Requestly. Learn how to mock APIs, modify headers, inject scripts, and more. Save ~2 hours a week
Sagar Soni
January 30, 2024
secure rest api
How to secure your REST API: Design Principles and Best Practices
Learn how to secure your REST API with essential REST design principles and best practices. Protect your data and enhance API security effectively.
Sachin Jain
December 28, 2023
Best 20 Advance Chrome DevTools Debugging Tips
Master Chrome DevTools Network tab with these 20 advanced tips. Improve your debugging skills and optimize web performance. Read now!
Siddhant Varma
December 27, 2023
How to add Auth0 authentication to React apps
Secure your React apps with Auth0. This tutorial provides a step-by-step guide to integrating Auth0 authentication including login, logout, and protected routes
Siddhant Varma
December 27, 2023
how to debug software
How to QA test your website – A step-by-step guide
Learn how to QA test your website with a structured approach. Follow this step-by-step guide to ensure functionality, security, and performance.
Kanishk Rawat
December 27, 2023
How to fast-track QA software testing using Requestly
Explore how Requestly is revolutionizing QA software testing, uncover its efficiency and effectiveness in ensuring top-quality web applications
Sagar Soni
December 27, 2023
Requestly 2023 in Review
As 2023 wraps up, we’re proud of our growth—improving our product, strengthening customer relationships, and thriving in a remote setup with team bonding along the way.
Sachin Jain
December 27, 2023
requestly customer support
How we provide exceptional customer support to Individuals and Companies
Requestly offers comprehensive customer support through Slack, Reddit, in-app chat, and RequestBot. Get quick answers and personalized assistance.
Sachin Jain
December 27, 2023
Free Open-source Tools for Android Developers
Discover Free Open-source Tools for Android Developers that boost testing, debugging, and publishing. Explore these community-driven solutions today!
Sagar Soni
December 26, 2023
e2ee-whatsapp
How WhatsApp Ensures Chat Security with End-to-End Encryption
Learn how WhatsApp uses E2EE to secure your chats, from message encryption to multi-device syncing. Explore the details!
Sachin Jain
December 26, 2023
How to Download all Network Requests of a Website
Learn how to download and analyze network requests using HAR files and Requestly Sessions. Capture detailed logs for debugging and performance optimization
Kanishk Rawat
December 26, 2023
api headers and body
What are API Headers and Body ?
Unlock API power in modern development: cURL, SEO with Requestly. Master seamless integration, data access, prototyping, API headers and body for top SEO
Dinesh Thakur
December 26, 2023
How to download console logs from a website
Learn how to download console logs in all major browsers: Chrome, Firefox, Safari, and Edge. Essential for web development and troubleshooting
Dinesh Thakur
December 26, 2023
How to mock authentication when the backend is not ready
Learn how to mock authentication for seamless frontend development even when your backend isn’t ready. Use Requestly to simulate APIs.
Siddhant Varma
December 22, 2023
How to load a different API response in frontend code?
Learn how to load different API responses in your frontend code for testing and development. Use Requestly to easily modify HTTP responses. Read now!
Sahil Gupta
December 22, 2023
How to test SaaS products without actual integration on live websites?
Learn how to use Requestly to test your SaaS product on live websites locally, simulating integration without affecting the actual site.
Sagar Soni
December 22, 2023
launch browsers with custom arguments using requestly
How to launch browsers in Requestly with custom arguments
Discover how to launch browsers in Requestly with custom arguments. step-by-step methods to configure custom arguments
Navdeep Rathore
December 21, 2023
How to override API request body using Javascript
Learn how to override API request bodies using Javascript for testing and development. Use Requestly to easily modify request payloads
Rohan Mathur
December 13, 2023
How to map HTTP Requests to local files without CORS issues
Using Requestly’s Map Local feature you can serve any local file as the response to an intercepted request in real-time.
Shrey Gupta
December 13, 2023
How to redirect URL from one environment to another using Chrome Extension?
Switch environments, debug, and test efficiently with Requestly URL Redirection. Redirect URLs effortlessly using our Chrome extension
Parth Bhardwaj
December 13, 2023
test edge cases
How to Test Your Website for Unusual Scenarios
As a web developer or QA, you need to test your website with different scenarios. Requestly helps simulate these scenarios without modifying the code.
Nafees Nehar
December 13, 2023
download network logs requestly
How to download network logs using Requestly SessionBook?
Vijay Gupta
December 13, 2023
How to serve a response for an API locally without hitting the server?
Learn how to serve API responses locally for testing and development, even when the backend isn’t ready. Use Requestly to mock API responses. Read now!
Sagar Soni
December 13, 2023
How to override API request body in Google Chrome
To modify the request body you can either set the new body statically or also
Navdeep Rathore
December 13, 2023
How to switch an API endpoint from one environment to another?
Learn how to quickly switch API endpoints between environments (e.g., production to local) for testing and development using Requestly. Read now!
Sagar Soni
November 22, 2023
How to change a part in the URL (e.g. domain) while keeping the rest of the URL same?
Learn how to easily change parts of a URL, like the domain, while keeping the rest the same. Use Requestly to simplify URL manipulation. Read now!
Sagar Soni
November 22, 2023
How to modify QueryParameters in URL on the fly?
Learn how to modify URL query parameters on the fly for debugging, testing, and customization. Use Requestly to easily add, remove, or change parameters. Read now!
Sagar Soni
November 22, 2023
How to add a random Query Parameter in a URL to avoid caching?
Learn how to add a random query parameter to a URL to bypass caching and ensure fresh content. Use Requestly to automate this process. Read now!
Sagar Soni
November 22, 2023
How to inject a script before page load on a website?
Learn how to inject a script before page load on a website using Requestly. Customize website behavior and automate tasks. Read now!
Sagar Soni
November 22, 2023