Everything in the catalog

Play the Snake demo cart on the WASM-4 fantasy console, a 160x160 retro game platform for WebAssembly.

Client-side PDF utilities to merge, split, compress, sign and protect files with no uploads.

Chains encoders, decoders and ciphers in a modular pipeline, with conversions running in the browser.

Drag handles to create organic blob shapes using the eight-value border-radius syntax.

Volunteer-run network where anyone can generate images and text for free, even anonymously.

Encrypts files and splits the key among trusted people so a chosen number must combine shares to open them.

Block-based programming language and editor running in the browser.

Checks whether an npm package's TypeScript types resolve correctly across module systems.

Runs ffmpeg in the browser so you can convert and edit video files without uploading them.

Compiles and runs Rust code in the browser and shows output, assembly or MIR.

Reference CommonMark converter that shows the HTML and syntax tree for any Markdown input.

Creates self-destructing encrypted notes and files that can be viewed a limited number of times.

Predicts upcoming Animal Crossing turnip sell prices from the prices you have seen so far in the week.

Converts Word .docx documents to Markdown for use in Git repositories and static sites.

Simple pixel-art editor with a colour picker and grid canvas for making small sprites.

API and page that return random placeholder user profiles with names, photos and addresses.

Turns typed text into handwriting-style output.

Upload a wireframe or design screenshot and get a React and Tailwind app generated from it.

Loads a GGUF model with a WebAssembly llama.cpp build and generates text in the browser.

Lets you paint a pattern on the GitHub contribution graph and produces a script to create matching commits.

Generates font pairings using a neural network that scores how well typefaces contrast.

Wordle variant for four-character Chinese idioms, with pinyin hints.

Upload a PDF and ask questions about it in a chat; the free account is needed to start.

Type source-target-amount flows and get a Sankey diagram exportable as image or SVG.