Speed up everyday development with our free browser-based developer tools. Format and validate JSON with the JSON Formatter, shrink assets with the JS/CSS/HTML Minifier, build and debug patterns in the Regex Tester, sample colours from an image, and preview Markdown as HTML.
Because each tool runs entirely on your device, you can work with proprietary code and sensitive data without trusting it to a remote service. Pick a tool below to get started.