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
Mini API Test is an in-browser Chrome extension for sending and inspecting HTTP requests instantly.
- for
- Web developers who need quick API testing without leaving the browser
- pricing
- free
- license
- Apache-2.0
Key features
7 features of Mini API Test
- All HTTP methods — Supports GET, POST, PUT, DELETE and other major methods.
- Custom headers & query params — Add custom request headers and query parameters.
- Body builders — Create request bodies in JSON (with validation), XML, plain text or form-data.
- Response viewer — Shows status, headers and formatted body with JSON syntax highlighting.
- Instant reset & copy — One-click response copy and instant reset for fast iteration.
- Tabbed interface — Organize multiple requests in clean, tabbed panels.
- Fully local — All data stays in the browser; nothing is sent to external servers.
Use cases
- Debug an endpoint directly from Chrome
- Explore a new API without installing Postman
- Quickly test request headers and query strings
- Inspect response status, headers and formatted body
- Copy responses instantly for documentation
Mini API Test vs alternatives
 Mini API Test |  Firecamp |  FakerAPI |  Tiny API |  BuildShip | |
|---|---|---|---|---|---|
| Best for | Lightweight in-browser API testing | Postman-like API client | Mock API generation | API monetisation platform | Low-code backend creation |
| Pricing | Free | Free | Subscription | Free | Free |
| DevHunt upvotes | 0 | 48 | 18 | 17 | 118 |
| Launched | Jan 2026 | Jan 2023 | Jan 2023 | Apr 2024 | Jan 2023 |
- Mini API Test vs Firecamp: Open-source Postman alternative with more advanced testing features
- Mini API Test vs FakerAPI: Provides mock API endpoints for testing applications
- Mini API Test vs Tiny API: Focuses on monetising APIs rather than testing them
- Mini API Test vs BuildShip: Visual backend builder, not a request tester
Mini API Test FAQ
Does Mini API Test send any data to external servers?+
No, the extension is fully local and does not transmit your data elsewhere.
What HTTP methods are supported?+
It supports all major methods including GET, POST, PUT, and DELETE.
Which request body formats can I use?+
You can build bodies in JSON (with validation), XML, plain text, or form-data.
How can I report bugs or give feedback?+
Issues can be submitted on the GitHub page: https://github.com/jivfur/chrome-api-tester/issues.
Is there any cost to use Mini API Test?+
The extension is free to install and use.
Summarized by DevHunt from chromewebstore.google.com · Sep 27, 2026. Details may change; check the official site.
