Everything in the catalog

Zero-knowledge pastebin where text is encrypted in the browser before being stored, with expiry options.

Non-linear personal notebook that runs as a single HTML file.

Two-pane Markdown writer showing a live preview, with HTML and PDF export.

Disassembles an uploaded .wasm module into readable WebAssembly text.

Assembles WebAssembly text format to a binary module and runs the JavaScript harness.

Turns a curl command into equivalent request code in many programming languages.

Converts raster images into SVG vector graphics, running in the browser per the page.

End-to-end encrypted office suite with rich text, spreadsheets and polls, usable without an account.

Recreation of classic Microsoft Paint that runs in the browser and saves images to your device.

Transform, prefix and minify CSS against chosen browser targets in the browser.

Fast search across Iconify icon sets with copy as SVG, JSX or Vue.

Game that teaches CSS flexbox by moving frogs onto lily pads with code.

Makes a printable card with a QR code and credentials so guests can join your Wi-Fi.

Web notes app for developers with Markdown, categories and local browser storage.

Edits Mermaid diagram code with a live preview and exports SVG or PNG.

Animated global map of wind, weather and ocean conditions.

Parses code with many language parsers and displays the syntax tree for exploring transforms.

Generates deterministic SVG avatars from a name and palette.

Searchable library of brand SVG logos with copy and download.

Open-source invoice generator with thirteen templates, custom colours and logo, exporting PDF.

Playable explainer on how cooperation and distrust spread, built around the repeated prisoner's dilemma.

Generates CSS for soft-UI neumorphic shadows on a configurable shape.

Web interface for SVGO with toggles for each optimization and a live before/after preview.

Builds editable fantasy world maps with states, religions, cultures, burgs and routes; exports to image or data files.