Free Developer and Code Tools

36 free browser-based developer tools for everyday coding tasks. Format and validate data with the JSON Formatter, XML Formatter, and YAML Formatter. Test patterns with the Regex Tester. Compare text with the Diff Checker.

This collection also includes encoding tools (Base64, URL Encoder, HTML Entity Encoder), security tools (Hash Generator, JWT Decoder, Password Generator), and Markdown tools (Preview, Markdown to HTML). All tools run locally in your browser — your data never leaves your machine.

Built by Derek Giordano · Part of Ultimate Design Tools