Explore my collection of tools, browser extensions, and fun web experiments.
A short guide to web accessibility best practices.
Test links with aria-label, title, href, pseudo-elements, and alt text for screen reader accessibility.
Generate QR codes quickly.
Customize your Chrome app bar colors with ease.
Apply EQ, compression and other Audio Unit effects to live microphone audio for podcasts, livestreams and calls.
Prototype of a city app for Karlsruhe. Services, appointments, news and waste collection, sorted by need instead of department.
Play Tetris in your browser.
Compare browser feature support. Based on data of Can I use data.
Check the contrast ratio of text and background colors.
An Apple Shortcut that Snaps a screen area, extracts text, and copies it to your clipboard.
An Apple Shortcut that switches between dark theme and light theme.
Your friendly Mastodon bot that shares a random HTML element each day — with a quick explanation and link to the spec.
Compare yearly electricity prices at a glance. No-ads, private, clean.
Don’t try this at home.
Rheinland-Pfalz Flurstück Finder Map with marking, linking and PDF export
A Bookmarklet to Force-Show Keyboard Focus for Accessibility Testing of Websites With Some Oomph
Generate GiroCodes with one click. No account. Data stays on your device.
Practice HTML element names from memory, including classic and timed modes.
Is today Capslock Day?
A lean macOS client for TeamSpeak 3 servers. Beta.
Analyze filtered posts from your timeline. Understand what gets muted and why.
A precise, responsive metronome web app. Tap tempo, adjust BPM, and visualize beats.
Convert text to audible Morse code.
A Firefox add-on to prevent target="_blank" links.
Watch Peertube videos from your favorite instances on your Apple TV
A soundboard to help you focus and relax.
A podcast about web development trends and topics.
View and search your local iOS WhatsApp chat backups in the browser.
A Firefox add-on to redirect YouTube links to YewTube.
…and I am an Specialist for Web Accessibility and UX-Engineer with over 20 years of experience, by day and a podcaster by night.
I help organizations build accessible websites by offering talks about accessibility, workshops & trainings, accessibility reviews and developing strategies for developers and management.
If that sounds like you could use my help, let’s talk! 💬