Developer Tools
A free kit of everyday developer utilities — formatters, encoders, hashing, regex, tokens and code helpers. Each one runs entirely in your browser: nothing is uploaded, there is no sign-up, and there is nothing to install.
JSON Formatter
Beautify, validate and minify JSON with clear error reporting.
Open tool →Base64 Encoder / Decoder
Encode text to Base64 or decode it back, instantly.
Open tool →URL Encoder / Decoder
Percent-encode URLs and query strings, or decode them.
Open tool →HTML Encoder / Decoder
Convert characters to HTML entities and back.
Open tool →Hash Generator
Generate MD5, SHA-1, SHA-256 and SHA-512 hashes.
Open tool → PopularPassword Generator
Build strong random passwords with the options you choose.
Open tool →UUID Generator
Generate unique UUIDs for keys, records and tests.
Open tool →Regex Tester
Test and debug regular expressions with live matches.
Open tool →JWT Decoder
Decode a JSON Web Token to inspect its header and claims.
Open tool → PopularQR Code Generator
Create QR codes for links, text and more — download as PNG or SVG.
Open tool →Code Minifier
Strip whitespace from HTML, CSS and JavaScript to shrink files.
Open tool →Cron Expression Builder
Build cron schedules visually and read them in plain English.
Open tool →