Network & API
API ClientOnline Developer Tool
Free in-browser REST client: send GET/POST/PUT/PATCH/DELETE with custom headers, auth, and body — useful when someone asks for a “Postman alternative online” or “test my API without installing software”.
About API Client
Test and debug HTTP requests with headers, body, and auth support. A lightweight Postman alternative in your browser. Runs entirely in your browser — no installation, no account required to try it.
Key Features
- api client
- http client
- rest api tester
- debug api
- postman alternative
- Runs in your browser — no install
- Free to use, always
How to Use API Client
- 01
Open the tool
Click "Use API Client Free" above — no download or account required.
- 02
Enter your data
Paste or type your input directly in the browser. Processing happens locally on your device.
- 03
Copy the result
Get your output instantly. Copy it, download it, or keep working in the same tab.
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