HTML Tools (9)

• Clipboard Inspector
  Inspect clipboard contents (text, HTML, images) — so you can see what will be pasted and identify where unexpected formatting originates.
• CUPS SMB Connection String
  Build a CUPS smb:// device URI from print server, share, username, domain and password — fields are URL-encoded automatically.
• Email Differ
  Compare two messy lists or text with email addresses — find unique and common entries.
• Image URL to Base64
  Convert any publicly accessible image URL to a copy-and-paste base64 representation. Supports CORS proxy for blocked images.
• 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.
• String Encoder
  Encode a string as Base64, URL-encoded, HTML entities, hex, or JSON-escaped — on the fly, in your browser.
• Umsatzsteuerrechner (19%/7%)
  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.