Developer Tools Tools
Developer tools: JSON formatter, Base64, hash, regex, JWT decoder, and more. Runs locally in browser.
JSON Formatter
Format and validate JSON
Base64 Encoder/Decoder
Base64 encode and decode
Timestamp Converter
Convert Unix timestamps and dates
URL Encoder/Decoder
URL encode and decode
Hash Calculator
MD5/SHA hash calculator
UUID Generator
Batch generate UUIDs
Regex Tester
Test regular expressions online
Color Converter
Convert HEX/RGB/HSL/HSV
HTML Escape
HTML entity encode/decode
Unicode Converter
Text ↔ Unicode conversion
JWT Decoder
Decode JWT tokens online
Text Diff
Compare two texts line by line
Base Converter
Convert between bases 2-100
Markdown Preview
Live Markdown rendering
SQL Formatter
Beautify and indent SQL
CSV to JSON
Convert CSV to JSON array
XML Formatter
Beautify and validate XML
JSON to CSV
Convert JSON array to CSV
YAML Formatter
Format, validate YAML and convert to/from JSON
Cron Expression Parser
Parse cron syntax and next run times
IP Address Converter
IPv4 dotted / integer / binary / hex conversion
TOML Formatter
Format, validate TOML and convert to/from JSON
JSON Path Query
Extract JSON fields with JSONPath
AES Encrypt & Decrypt
AES-256 text encryption and decryption
Image to Base64
Encode images as Base64 strings
QR Code Decoder
Read QR code from image
HTTP Status Codes
Look up HTTP status code meanings
User-Agent Parser
Parse User-Agent strings
CSS Gradient Generator
Visual linear-gradient CSS builder
CSS Shadow Generator
Visual box-shadow CSS builder
Flexbox Generator
Visual Flexbox CSS builder
Code Screenshot
Generate styled code images