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Developer Tools

JSON, Base64, regex, minifiers, diff, encoders and code utilities. All tools are free, browser-based, and require no account.

Most popular

Format, validate, and minify JSON online — live preview

QR Code Generator

Generate QR codes for URLs, text, WiFi, email, phone

Color Palette GeneratorNew

Generate beautiful color palettes — HEX, RGB, CSS variables

More developer tools

QR Code Scanner (from Image)Decode QR codes from screenshots and photos — no camera needed

Base64 Encoder/DecoderEncode and decode Base64 strings online — supports UTF-8

URL Encoder/DecoderEncode or decode URL components and query strings

HTML/CSS MinifierMinify HTML and CSS to reduce page load time

Regex TesterTest regular expressions online with live match highlighting

Color PickerPick colors and convert between HEX, RGB, HSL formats

Hash GeneratorGenerate MD5, SHA-1, SHA-256, SHA-512 hash online

CSS Gradient GeneratorCreate beautiful CSS gradients with live preview

Code Diff CheckerCompare two texts or code files — side by side diff

Cron Job ParserParse and explain cron expressions in plain English

SQL FormatterFormat and beautify SQL queries online — all dialects

JWT DecoderDecode and inspect JWT tokens — header, payload, signature

UUID GeneratorGenerate UUID v4 — bulk generate and copy instantly

Unix Timestamp ConverterConvert Unix timestamps to human-readable dates

IP Address LookupFind location, ISP, and details from any IP address

Image to Base64Convert image to Base64 string for CSS and HTML embedding

Favicon GeneratorGenerate favicon.ico from any image — all sizes in one download

WHOIS Domain LookupWHOIS lookup — check domain owner, expiry, and registrar

HTML to PDFConvert HTML code to PDF online — free browser-based

XML Formatter & ValidatorFormat and validate XML online — pretty print with syntax highlighting