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HTTP Status codes offline reference. Free app.
Offline HTTP status codes reference with code samples, search, quiz & favorites
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?"