HTML Tools (5)

• Clipboard Inspector
  Inspect clipboard contents (text, HTML, images) — so you can see what will be pasted and identify where unexpected formatting originates.
• Interactive Chart Demo
  Interactive chart demo showing three time-series that update live as you adjust controls.
• OCR PDFs and images directly in your browser
  OCR PDFs and images directly in your browser. This tool runs entirely in your browser. No files are uploaded to a server
• QR Code Generator
  Generate a QR code for a URL with a built-in icon embedded in the center. Export PNG or SVG.
• Umsatzsteuerrechner (19%)
  Einfacher Umsatzsteuerrechner für den deutschen Standardsteuersatz von 19%. Berechnet Netto-, Steuer- und Bruttobeträge.

These are small, pragmatic HTML utilities — built to be useful, not flashy. They run entirely in your browser (no server-side processing or data collection), so everything stays on your device.

Adding a new tool is cheap and fast just — drop me a line with your tool idea: Thomas Breitner <t.breitner@csl.mpg.de>

This collection is an experiment in prompt-driven development with very low stakes and low personnel costs. Heavily inspired by Simon Willison's tools collection.