ImageScript Playground

A browser playground for ImageScript, published at https://try.imagescript.dev/.

Development

Requires Node.js 22.13 or newer.

npm install
npm run dev

Build

npm run check
npm test        # type checks the examples like the editor does, then runs each in Node with its sample image
npm run build
npm run preview

Examples, samples and fonts

Each example is a file in examples/ (the body of an async function, see the globals below), listed with its title, description and optional sample image in src/lib/examples.ts, in the order the picker shows them. The sample images (public/samples, credits in CREDITS.md) and fonts (public/fonts, licenses in LICENSES.txt) are listed in src/lib/assets.ts, which the input picker, the Fonts panel, the worker and the editor's types use.

Editor

The editor is Monaco with JavaScript IntelliSense. It loads the declaration file shipped by the imagescript npm dependency, so completions, hover docs, parameter hints and diagnostics use the library's published types.

Available globals in user code:

• Image, Animation, AnimationEncoder, Frame, GIF, ImageType, TextLayout
• decode
• input (Uint8Array containing the selected file: a sample image or the uploaded one)
• loadFont(id) (a bundled font's file, e.g. await loadFont('inter'); the Fonts button lists them)
• loadSample(id) (a sample image's file, e.g. to combine it with the input)
• console (forwarded to the playground console)

Return an Image to preview a PNG, an Animation to preview a GIF, encoded bytes to preview/download the detected format, or another value to inspect it as text or JSON. Ctrl / ⌘ + Enter runs the code.