Tools

Handy little tools I've built. They all run in your browser: nothing you type or open is sent to my server.

• QR code generatorMake QR codes for links, Wi-Fi, contacts and more. Style them, add a logo or a caption, make hundreds at once, and download PNG, SVG or PDF.
• JSON & CSV viewerPaste or open a file to explore it as a tree or a table. Check for errors, sort, filter, and convert between the two.
• Regex testerWrite a regular expression and see what it matches as you type, with groups, a replace preview and a plain-English breakdown.