Free Tools for Developers
Format, debug, convert, and inspect — essential developer tools that run entirely in your browser.
JSON Formatter
Format, beautify, validate, and minify JSON. Paste messy API responses and get clean, indented output with syntax highlighting.
SQL Formatter
Format and beautify SQL queries. Supports 13 dialects including MySQL, PostgreSQL, and SQL Server.
JWT Decoder
Decode and inspect JSON Web Tokens without any server call. See header, payload, claims, and expiration at a glance.
YAML ↔ JSON
Convert between YAML and JSON formats. Perfect for Kubernetes, Docker, and OpenAPI configurations.
Regex Tester
Test regular expressions with live highlighting and capture group visualization. Debug complex patterns instantly.
Hash Generator
Generate SHA-256, SHA-512, and HMAC hashes using the native SubtleCrypto API. No data leaves your device.
Cron Parser
Parse cron expressions into plain English. See the next scheduled run times — never misread a cron schedule again.
UUID Generator
Generate UUID v4 identifiers in bulk using crypto.randomUUID(). Download lists of 1 to 1000 UUIDs.
URL Decoder & Analyzer
Decode and analyze URLs: query parameters, encoding, and URL structure breakdown.
Timestamp Converter
Convert Unix timestamps to human-readable dates and vice versa. Multiple format outputs.
Base64 Converter
Encode and decode Base64 for text and files. Supports charset selection and live mode.
Text Compare
Compare two texts side-by-side with clear diff highlighting. Spot every addition, deletion, and change.
Snapshot Studio
Turn code into beautiful, shareable screenshots with syntax highlighting, window chrome themes, gradients and PNG export.