Best Developer Tools Online
Access the best free developer tools for JSON, Base64, regex, hashing, and more. Essential utilities for developers.
Recommended Tools
JSON Formatter
Format and validate JSON. Paste minified JSON, get pretty-printed output.
⚡ Browser Only🔒 No Upload🚀 Instant Processing
Base64 Encode/Decode
Encode and decode Base64 strings. Supports Unicode.
⚡ Browser Only🔒 No Upload🚀 Instant Processing
URL Encode/Decode
Encode and decode URL-encoded strings. Percent-encoding.
⚡ Browser Only🔒 No Upload🚀 Instant Processing
Regex Tester
Test regular expressions against sample text. Highlight matches with g, i, m flags.
⚡ Browser Only🔒 No Upload🚀 Instant Processing
Hash Generator
Generate MD5, SHA-256, SHA-512 hashes. Paste text, get hash.
⚡ Browser Only🔒 No Upload🚀 Instant Processing
Timestamp Converter
Convert between Unix timestamp and human-readable date.
⚡ Browser Only🔒 No Upload🚀 Instant Processing
Cron Expression Generator
Generate cron expressions visually.
⚡ Browser Only🔒 No Upload🚀 Instant Processing