Save & export

#Save a PNG file (Node.js)

1import fs from 'fs';2 3fs.writeFileSync('./output/scene.png', buffer);

Ensure the output folder exists or use a path that already exists:

1import fs from 'fs';2import path from 'path';3 4const dir = './output';5if (!fs.existsSync(dir)) fs.mkdirSync(dir, { recursive: true });6fs.writeFileSync(path.join(dir, 'scene.png'), buffer);

#Typical workflow

1. createCanvas → base buffer
2. createImage / createText / … → replace buffer with return value
3. writeFileSync once at the end or after each milestone for debugging

#Library save (optional)

For built-in paths, naming, and formats (WebP, JPEG, …), use await painter.save(buffer, options) — see Save to disk and the Raster, batch & output hub.

#Other outputs (later)

The library also supports outPut encoding, batch, chain, GIF, charts, video, standalone image tools (crop, palette, …) — see 03-feature-guides. The beginner track stops at manual PNG writes above plus pointers.