Requestly a better alternative to ModHeader
Searching for a sleek alternative to ModHeader? Requestly provides a browser-centric, developer-friendly tool for effortlessly managing HTTP headers, ensuring faster debugging and seamless customization
HTTP Header modifications are free in Requestly. Claim 1 yr free Requestly pro plan for other modifications. (save ~$10k)
Trusted by 200,000+ developers, from next-gen startups to Fortune 500 companies.
No ads, No Spam, and We’re Open Source
Requestly puts privacy first with its “No ads, No Spam, Open Source” approach. The open-source nature of Requestly allows for greater transparency strengthening trust in how the tool handles your information.
Forever Free HTTP Header Modifications
Requestly offers free, unlimited HTTP header modification, comparable to ModHeader's free plan. However, Requestly provides an ad-free interface and priority support with improved user experience.
Simple, Fast & Powerful than ModHeader
Requestly provides a user-friendly and modern interface curated by UX experts. It is available in two forms — a browser extension & a desktop application for all major platforms like Chrome & Chrome-based browsers, Firefox, Safari, Edge, Brave, Opera, Vivaldi, Windows, Mac(Apple & Intel Chips), and Linux.
Gentle Learning Curve
Requestly is designed from bottom up to maintain a shallow learning curve. Moreover a detailed documentation, a learning academy, interactive guides & video tutorials make you a power user from Day 1.
Modify HTTP Requests & Responses
Requestly supports request/response HTTP Headers manipulation and other parts of a request and response. Requestly is a complete HTTP Interception tool for browsers, helping frontend developers develop & test faster.
Best customer support
Requestly is known to provide the best customer support to its customers. Requestly has more than 1000 reviews on the Chrome Store testifying the best support from the Requestly team.
GraphQL Support
Exclusive support for GraphQL APIs is available in Requestly. Unlike Modheader, which is designed for REST APIs and struggles to handle GraphQL’s request structure. GraphQL relies on a schema-based approach, making it necessary to apply additional filtering to isolate specific operations within a request.
Popular Use Cases
Modify/ Bypass CORS
Bypass CORS errors during development by modifying response headers locally, without changing anything on the server.
Set Authorization Header
Inject auth tokens into request headers to test APIs without logging in or changing your code.
Modify Cookie Header
Add, modify, or remove Cookie headers in requests to fake sessions, test edge cases, or debug issues, no need to touch your browser storage.
| Features | ModHeader | Requestly |
|---|---|---|
| No Ads, No Spam | ||
| Open Source | ||
| Modify HTTP Headers | ||
| Modify API Response | ||
| Modify URL | ||
| GraphQL Support | ||
| Inject Scripts | ||
| Page Level Filters | ||
| Collaboration | ||
| Mock server | ||
| API client | ||
| Enterprise-Ready | ||
| Support |
Built for teams
Effortless team collaboration
Secure and private
Enterprise-ready security and compliance
Frequently Asked Questions
There are frequently asked questions related to Requestly
What is Requestly and how is it different from ModHeader ?
Is Requestly more secure than ModHeader?
Is Requestly open-source
Is Requestly free to use ?
Yes. Requestly offers a Free plan with essential features like unlimited header rules and standard HTTP modifications, perfect for getting started.
Does Requestly offer an enterprise plan?
Yes. Requestly offers an Enterprise Plan built for larger teams and organizations that need full control and compliance. It includes unlimited usage, API access, SSO & SAML, GDPR and SOC 2 compliance, user access management, SLAs for support and uptime, invoice-based billing, and priority support via Slack Connect, Email, and Chat.
Is Requestly free for students?
Yes! Requestly is free for students, enjoy access to powerful tools and features with no cost.
Why are my response header modifications not visible in the browser’s dev tools?
Why Aren’t My Requestly Rules Working?
How do I modify headers using Requestly?
Can I apply header modifications to specific HTTP methods (GET, POST, etc.)?
Yes, you can apply header modifications to specific HTTP methods by specifying the method condition within the rule settings. This ensures that headers are modified only for requests of certain types. For a detailed guide,.