Developer
Toolkit.
A high-performance collection of essential, browser-native utility tools for engineers. Completely free, fast, and secure.
JSON Formatter
Format, validate, and minify your JSON data with custom indent spacing.
JWT Decoder
Decode JSON Web Tokens and inspect their header, payload, and signature values.
Base64 Encoder/Decoder
Encode text into Base64 format or decode Base64 strings back to text.
Cron Generator
Generate standard cron expressions interactively with dropdown selectors.
UUID Generator
Generate RFC4122 compliant UUID v4 strings in bulk instantly.
Regex Tester
Test and debug your regular expressions against sample strings with match highlighting.
SQL Formatter
Beautify and format your raw SQL queries with proper keyword capitalization.
Unix Timestamp Converter
Convert epoch timestamps to human-readable datetimes or generate current stamps.
Hash Generator
Generate MD5, SHA-1, SHA-256, and SHA-512 cryptographic digests from text.
URL Encoder/Decoder
Encode strings into URL-safe formats or decode escaped URL strings.
Password Generator
Generate secure, random passwords with custom lengths and character sets.
Markdown Preview
Compile and preview your Markdown document structure in real-time.