Yes, completely free. No signup, no subscription, no hidden fees.

No. Everything runs in your browser. Your files and data never leave your device.

API Tester

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Use the free online api tester tool — no uploads, no signup required.

API Tester

Headers

Request Body

Body is ignored for GET/HEAD requests

Response Body

Request History (last 20)

Note: Due to browser CORS restrictions, most third-party APIs will block requests from this tool. For testing, use APIs that support CORS or run your own local server. You can also use this to test endpoints on your own domain.

More options

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How to use API Tester

Open the tool.
Follow the on-screen instructions.
Download or copy your result.

What is API Tester?

Free online api tester tool that works entirely in your browser. No files are uploaded to any server — your data stays private and secure.

FAQ

Is this tool free?: Yes, completely free. No signup, no subscription, no hidden fees.
Is my data uploaded?: No. Everything runs in your browser. Your files and data never leave your device.

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HTTP Status Codes
🗄️ Developer Tools
Interactive searchable reference for all HTTP status codes (1xx-5xx). Click to copy, filter by category. Free developer tool, no signup.

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Last updated: 2026-06-08

API Tester

How to use API Tester

What is API Tester?

FAQ

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