Free Dev Tools Online
20 free tools · No signup · Instant results · No watermark
Free dev tools: JSON formatter, Base64 encoder, URL encoder, CSS minifier, JS minifier, password generator, UUID generator and more.
JSON Formatter
Format, validate and beautify JSON data instantly
Base64 Encoder
Encode and decode Base64 strings for text and files
URL Encoder
Encode and decode URLs for safe transmission
HTML Formatter
Beautify and minify HTML code with syntax highlighting
CSS Minifier
Minify CSS to reduce file size and improve performance
JS Minifier
Minify JavaScript code for faster page load times
Color Picker
Pick colors and get HEX, RGB, HSL values instantly
Password Generator
Generate secure random passwords with custom options
UUID Generator
Generate UUID v1, v4 and other versions instantly
QR Code Generator
Generate QR codes for URLs, text, WiFi and more
Regex Tester
Test and debug regular expressions with live match highlighting
Hash Generator
Generate MD5, SHA-1, SHA-256, SHA-512 hashes from any text
JWT Decoder
Decode and inspect JSON Web Token header, payload and signature
Unix Timestamp Converter
Convert Unix timestamps to human readable dates and vice versa
JSON to CSV
Convert JSON arrays to CSV format for spreadsheets and databases
CSV to JSON
Convert CSV files and data to JSON format instantly
Cron Expression Generator
Generate and validate cron expressions with human readable explanation
Number Base Converter
Convert numbers between Binary, Octal, Decimal and Hexadecimal
HTML Entity Encoder
Encode and decode HTML entities like & < > and more
Markdown Table Generator
Create and format Markdown tables easily with live preview