Everything in the catalog

Game that teaches CSS grid by watering a garden with grid rules.

Snaps messy or AI-generated pixel art to a clean pixel grid with consistent color.

Postgres running in the browser through PGlite, paired with an AI assistant for schemas, CSV imports and diagrams.

Shares passwords through links that expire after a set number of views or days.

Build a visual timeline from a Google Sheet template and embed it on a website.

Encrypts a secret in the browser and gives a short-lived link that can be opened once.

Browser mind map editor with keyboard shortcuts, themes and image export.

Guided tour of Glicol, a graph-based language for live coding music that runs in the browser.

Image optimizer that shrinks files in the browser, works offline and keeps images on the device.

Creates a link to a secret message that can be opened only once.

Designs QR codes with custom dot shapes, colors and a center logo, then exports them as images.

Online EPUB reader with highlighting, search and themes.

Build branching interactive stories visually as linked passages; works in the browser and exports to HTML.

Format SQL for many dialects with configurable indentation and keyword case.

Draw UML-style class and component diagrams from a compact text syntax with instant preview.

Draws a PostgreSQL EXPLAIN JSON plan as a tree with cost and time per node.

Minimal offline-first HTTP client for the web that organizes requests into collections.

Suggests postgresql.conf settings for given hardware, PostgreSQL version and workload type.

Shared drawing board where anyone with the link can sketch together, no sign-up.

Browser demo that reads and decodes QR codes from your webcam video stream.

Packs SVG parts tightly onto a sheet to cut material waste for laser, CNC and plasma cutting.

Probes browser APIs to expose fingerprinting signals and detect spoofing or privacy tools.

Online book with live demos of Bezier curve math, splitting, offsetting and intersection.

Browser word cloud generator that lays out the most frequent terms of pasted text on a canvas.