REST API Tester

A lightweight, browser-based API client for testing GET, POST, and other HTTP requests with JSON formatting.

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Technical Audit

This utility is a high-performance node optimized for modern browser environments. All data processing is executed client-side, ensuring zero knowledge transfer to external servers.

No-login REST client

Custom header injection

JSON response beautifier

Bypass CORS with local fetch

System FAQ

Does it support headers?

Yes, you can add custom authorization tokens and content-type headers for secure API testing.

Can I test local APIs?

Yes, since the tool runs in your browser, it can access localhost and internal network endpoints.