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
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📣 Requestly – Modern git-based API Client. No login required. Switch from Postman in 1 click. Try now ->

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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
api test generator

Requestly Launches AI Test Authoring for API Test Scripts

Requestly introduces AI Test Authoring, allowing developers to automatically generate and refine API test scripts for faster, smarter testing.
Sagar Soni
January 22, 2026

Featured posts

import postman collections into requestly scaled complete migration guide
Import Postman Collections into Requestly: Migration Guide
Learn how to import Postman collections and environments into Requestly. Follow this step-by-step guide to migrate your API workflows easily.
Kanishk Rawat
March 10, 2026
Endpoint ft. Kushagra Gour: A Builder’s Philosophy on Craft and Empathy
Discover Kushagra Gour’s philosophy on building empathetic software that blends craftsmanship with real-world needs in this insightful Endpoint interview.
Kanishk Rawat
November 3, 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

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
HTTP Rules: Intercept & Modify 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
Unlock agile development with Requestly, streamlining web app building, testing, and debugging for frontend developers and QA teams.
Sagar Soni
February 7, 2024
Streamlining Frontend Dev 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 REST APIs: Design Principles & 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!
Sagar Soni
December 27, 2023
How to add Auth0 authentication to React apps
Discover how to easily add Auth0 authentication to your React apps, ensuring secure logins and protected routes with this simple step-by-step guide.
Sagar Soni
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
Explore how Requestly excelled in 2023 with innovative product upgrades and stronger customer connections, shaping a bright future for developers.
Sachin Jain
December 27, 2023
requestly customer support
How Requestly Provides Exceptional Customer Support to Users
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 Secures Chats 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.
Sagar Soni
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
Test SaaS Products on Live Sites Without Integration
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
Redirect URLs Across Environments in 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?
Parth Bhardwaj
December 13, 2023
How to Serve API Responses Locally Without Hitting 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
Switch API Endpoints Between Environments Easily
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 query parameters in URL on the fly using Requestly for effective debugging and enhanced web application customization.
Sagar Soni
November 22, 2023
How to add a Random Query Parameters to Prevent 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
How to block a URL in Chrome, Firefox & Safari
Easily block URLs in Chrome, Firefox, and Safari to minimize distractions and enhance your browsing experience with this simple guide.
Sagar Soni
November 22, 2023
How to modify HTTP Headers in Chrome, Firefox, Edge & Safari browsers?
Learn how to modify HTTP headers in Chrome, Firefox, Edge, and Safari. Control network traffic for testing, development, and more. Read now!
Sagar Soni
November 22, 2023
How to throttle (or add a custom delay to) an API request?
Learn how to throttle API requests for better testing with custom delays using the Requestly Chrome extension to improve your web app performance.
Sagar Soni
November 22, 2023
How to modify HTTP Headers in Android and IOS Apps/Browsers?
Learn how to modify HTTP headers in Android and iOS apps and browsers using Requestly. Control network traffic for testing and development. Read now!
Sagar Soni
November 22, 2023
How to Modify API Responses in Chrome
Learn how to modify API responses in Chrome for testing and development. Use Requestly to simulate various scenarios and improve your workflow. Read now!
Sagar Soni
November 15, 2023
Boosting Developer Productivity with Requestly
Unlock developer productivity with Requestly: streamline debugging, enhance collaboration, and make web development easier and faster.
Sagar Soni
November 15, 2023
How Mindera uses Requestly for proactive API Management
Learn how Mindera leverages Requestly to eliminate API dependencies and empower frontend development. Explore their workflow!
Sagar Soni
November 10, 2023
How StoriAI Improved Debugging with Session Replay
Learn how StoriAI uses Requestly’s Session Replay to simplify debugging and boost team productivity
Sagar Soni
November 9, 2023
Requestly & Instabug: Bridging Frontend-Backend
Learn how Instabug uses Requestly to eliminate hardcoded API responses and accelerate frontend development. Improved collaboration and efficiency.
Sagar Soni
November 6, 2023
thumbnail image for case study of metrical using requestly to demonstrate their service on live website.
Metrical uses Requestly to demonstrate their tool directly on customer websites
Learn how Metrical uses Requestly to test and demonstrate their AI solution directly on customer sites ,no staging needed.
Sagar Soni
November 1, 2023
How Rownd Ships Updates Confidently with Requestly
Learn how Rownd uses Requestly to seamlessly test and deploy product updates to their customers’ websites. Improve your SaaS testing workflow today!
Sagar Soni
November 1, 2023
15Gifts uses Requestly to test JS tags on external websites
Discover how 15Gifts leverages Requestly for seamless JS tag testing on external websites to enhance user experience and optimize product recommendations.
Sagar Soni
November 1, 2023
Wingify uses Requestly to Debug the Delivery of Campaigns
See how VWO’s team uses Requestly to debug campaigns, test client sites & improve development workflow. Learn from their success story today!
Sagar Soni
November 1, 2023
How Advance Metrics Streamlined GTM Testing with Requestly
Advance Metrics streamlined GTM script testing with Requestly! Replace GTM scripts and debug easily without client involvement. Try Requestly now!
Sagar Soni
November 1, 2023
Requestly Helps Joyned Test JS SDK on Production
Learn how Joyned uses Requestly to simplify and accelerate JS SDK testing on client websites. Improved QA, faster development cycles. Explore now!
Sagar Soni
October 31, 2023