API Testing.
Inside Your Browser.

Postman Mini is a futuristic, fully open‑source, lightweight API testing extension for Chromium browsers — Chrome, Edge, Opera GX, Brave, and more. Fire requests instantly, inspect responses, and measure latency without ever leaving your workflow.

POST https://api.example.com/login Headers: { Authorization: Bearer *** } → 200 OK Latency: 182 ms { "token": "eyJhbGciOi...", "expires": 3600 }

⚡ Ultra Lightweight

No bloated installs. Run quick API tests directly inside your browser using a clean, minimal UI.

📊 Latency Insights

Every request reports response time so you can instantly evaluate backend performance.

🧭 Chromium Ready

Works across Chrome, Edge, Brave, Opera GX, Vivaldi, and more.

🌍 Fully Open Source

Community‑powered and transparent. Download on GitHub, request features, and help shape the future of Postman Mini.

⚡Instant Requests
🌍Open Source
🧪API Focused
🧭Chromium Ready
“Ridiculously fast for quick endpoint testing.”
“Perfect when Postman feels like overkill.”
“Love that it’s open source and hackable.”

FAQ

Is Postman Mini free?

Yes — it’s completely free and open source.

Which browsers are supported?

Any Chromium‑based browser including Chrome, Edge, Brave, Opera GX, and Vivaldi.

Can I request features?

Absolutely — Leave a review on our Edge-Store page, and we will take a look!

Try Postman Mini Today

Install Extension Star on GitHub