Is WebGati API Tester free?

Completely free with no usage limits, no account required, and no rate limiting on API testing.

What HTTP methods are supported?

GET, POST, PUT, PATCH, DELETE, HEAD, and OPTIONS are all supported.

Can I set Authorization headers?

Yes. You can add any custom headers including Authorization (Bearer token, Basic auth, API key) in the Headers section.

Can I send JSON body with POST requests?

Yes. Set Content-Type to application/json and paste your JSON payload in the request body editor.

Does it support file uploads?

You can send multipart/form-data for file upload API testing using the Form Data body type.

Can I save my API requests for later?

Request history is saved in your browser session. For persistent collections, consider using Postman for complex multi-request workflows.

Why use WebGati API Tester instead of Postman?

For quick one-off API testing, WebGati is faster to open and use — no account, no download, runs instantly in your browser.

Can I test APIs that require OAuth 2.0?

You can manually add the Bearer token in the Authorization header after obtaining it through OAuth flow.

API Tools

API Request Builder

Test REST APIs without Postman - 100% in-browser

Headers (JSON)

API Tester — Test REST APIs Online Free Without Postman

4.9/5

(Based on 5298 positive reviews)

WebGati's API Tester is a professional browser-based REST API client that lets you send HTTP requests and inspect responses without installing any software. Think of it as a free, instant alternative to Postman or Insomnia — available directly in your browser. You can test GET, POST, PUT, PATCH, and DELETE requests, set custom headers (including Authorization and Content-Type), add query parameters, and send JSON, form data, or raw body payloads. Responses are displayed with full status codes, response time measurements, syntax-highlighted JSON output, and all response headers. This tool is invaluable for developers testing API endpoints during development, debugging third-party API integrations, or learning how REST APIs work. The clean, intuitive interface lets you start testing in seconds without any configuration.

Power users often combine this utility with our Webhook Tool and JSON Formatter Pro for maximum efficiency.

How to Use API Tester (Step-by-Step)

1
Select HTTP Method
Choose GET, POST, PUT, PATCH, DELETE, or HEAD from the method dropdown.
2
Enter the API URL
Paste the full API endpoint URL including any query parameters.
3
Add Headers and Body
Set request headers (Authorization, Content-Type, etc.) and add JSON body for POST/PUT requests.
4
Send and Inspect Response
Click Send. View the response status, headers, body, and response time instantly.

Key Features of API Tester

All Methods
Header Pro
JSON Body
Response View
100% Free — No Account Required
Browser-Based — Zero File Uploads
Works on Mobile, Tablet & Desktop
No Watermarks, No Limits

Common Use Cases

→Test REST API endpoints during development
→Debug API authentication (Bearer tokens, API keys)
→Test webhook payloads before deployment
→Explore third-party API documentation live
→Test CRUD operations on database APIs

Frequently Asked Questions

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