Personal website, Berlin themed.

Apply a red tint to a selected region of an image and download the result.

Crop images to a specific output resolution. Drag to position, drag corners to resize.

Paste JSON and explore it as a collapsible tree. Live parsing with type-colored values.

Paste Markdown and see it rendered live. Copy the output as HTML or back as Markdown.

Hourly weather dashboard for an e-ink display. Renders a 480×800px greyscale PNG via headless Chromium and serves it from GCS at a UUID-masked URL.

A terminal animation that sweeps a shimmer of light across a paragraph of text. Includes a detailed walkthrough of how it works.

Interactive particle system experiments. Starts with a fountain to illustrate velocity, gravity, and lifetime.

A block puzzle game. Single HTML file, no dependencies.

Flashcard quiz for jazz chord voicings from a Bill Evans "Portrait in Jazz" exercise. Reveals notes and explains the harmony theory behind each chord.

Displays random major and minor scales with a visual piano keyboard. Made to help a kid study for a music test.

Name notes on a grand staff. Three tiers targeting ledger-line boundary notes rendered with VexFlow.

Generates a lock screen wallpaper for epileptics. Shows seizure instructions and medication info for bystanders and paramedics.

Chrome extension that adds a direct "Open in Google Maps" button to Google search results, working around the EU restriction that hides it.

Chrome extension to filter and close open tabs using natural language queries.

Chrome extension that adds a one-click "Copy Issue Key" button to Jira issue pages and board modals.

Userscript that displays the mealplan panels on schildkroete-berlin.de side by side instead of stacked.