Web & developer
Everyday utilities for building and debugging. 8 tools, all free and all running in your browser.
Paste JSON to pretty-print it with your choice of indentation, or minify it for transport. Invalid JSON gets an error message with the line number rather than a silent failure.
Convert text to Base64 and back. Unlike the browser's raw btoa, this handles Unicode properly, so accented characters, Arabic, Urdu, Chinese and emoji survive the round trip.
Encode text so it survives inside a URL, or decode an unreadable link back into plain text. Paste a full URL and the page also breaks out its protocol, host, path and query parameters.
Produces all four SHA digests of whatever you type, computed locally by the browser's cryptography engine. Useful for checksums, fingerprints and verifying that two pieces of text are identical.
Generates passwords from your browser's cryptographic random source and never transmits them. Pick a length, choose which character sets to include, and take as many as you need.
Produces version 4 UUIDs in whatever quantity and format you need — plain for a config file, quoted for a SQL insert, braced for Windows registry work.
Generate a QR code for a link, a Wi-Fi network, a phone number or an email address, then download it as a PNG at the size you need for print or screen.
Pick or paste a colour and get its HEX, RGB and HSL values together, a generated ramp of tints and shades, and the contrast ratios that decide whether text on it is readable.