Test RESTful APIs Instantly – Without Leaving Your Browser!
API Tester is a lightweight, in-browser tool for developers who want to send and inspect HTTP requests fast. No need to open Postman or cURL—just open a new tab and go.
Key Features:
✅ Supports all major HTTP methods: GET, POST, PUT, DELETE
📬 Send custom headers & query parameters
🧾 Build request bodies in JSON (with validation), XML, plain text, or form-data
👁️ Inspect responses clearly: status, headers, and formatted body (with JSON syntax highlighting)
⚡ Instant reset and one-click response copy for fast iteration
🖼️ Clean, tabbed interface to organize requests logically
🔒 Fully local – no data is sent to any server
Whether you're debugging endpoints or exploring a new API, API Tester makes the process seamless and efficient.
Get started now and streamline your workflow – right from your Chrome browser.
Feedback or issues? We’re listening: https://github.com/jivfur/chrome-api-tester/issues
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About this launch
Mini API Test by Ivan Fuentes Will be launched January 6th 2026.