HTTP Status Codes Reference

Clement Ochieng

About this app

The complete HTTP status codes reference — fast, beautiful, and 100% free.

Every developer eventually forgets the difference between 401 and 403, or whether to use 422 or 400 for a validation error. This app is the cheatsheet you'll actually want to keep on your home screen.
FEATURES

1. ALL ~60 STATUS CODES — From 100 Continue to 511 Network Authentication Required, organized by category (1xx Informational, 2xx Success, 3xx Redirection, 4xx Client Error, 5xx Server Error).

2. RICH DETAILS FOR EVERY CODE

- Plain-English description
- When to use it (and when not to)
- Common real-world scenarios
- Pro tips & gotchas (401 vs 403, 301 vs 308, 400 vs 422, and more)
- RFC reference
- Related codes you can jump straight to

3. READY-TO-COPY CODE SAMPLES
For each status code, get example responses in:
- Raw HTTP
- cURL
- Python (FastAPI)
- Node.js (Express)
- Browser Fetch API
- Go (net/http)

4. QUIZ MODE — Multiple-choice questions to test your knowledge. Great for interview prep or just sharpening your memory.

5. FAVORITES — Star the codes you reference most often.

6. INSTANT SEARCH — Search by number, name, or any keyword in the description.

7. BEAUTIFUL DARK MODE — Easy on your eyes during long debugging sessions.

8. 100% OFFLINE — All data is bundled with the app. No internet required, no tracking, no ads.

9. COMPLETELY FREE — No paywalls, no premium tier, no ads. Every feature, unlocked.

Perfect for: backend developers, API designers, frontend developers debugging fetch calls, QA engineers, technical interviewers, students learning HTTP, and anyone who's ever Googled "what does 502 mean again?"

What’s new

HTTP Status codes offline reference. Free app.