Developer Code Utilities

JWT Decoder

The JWT Decoder breaks any JSON Web Token into its header, payload and signature. Shows the algorithm, issued-at timestamp, expiry and all custom claims in a readable format. Your tokens are never sent anywhere — decoding runs entirely in the browser.

Regex Tester

The Regex Tester shows all matches highlighted in your test string in real time. Supports all JavaScript regex flags (g, i, m, s, u). The sidebar has a cheatsheet for common patterns and 8 presets for email, URL, IP address, hex color and date formats.

Cron Expression Explainer

Paste any cron expression into the Cron Explainer and get a plain English translation, a breakdown of each field and the next 8 scheduled execution times. Includes a visual builder and presets for Vercel, GitHub Actions and common intervals.

HTTP Status Codes Reference

The HTTP Status Reference covers all 70+ HTTP codes with descriptions, real-world use cases and when to return each. Grouped by 1xx, 2xx, 3xx, 4xx and 5xx. Search by code number, name or description.

URL Parser

The URL Parser breaks any URL into protocol, host, port, path, query parameters and hash. Edit any component and see the reconstructed URL update in real time. Add and remove query parameters with individual fields.