Optimus Edge

Image optimizer for the Optimus Export Figma plugin — mozjpeg, libwebp and libpng compiled to WebAssembly.

Everything runs in this browser · nothing is uploaded

Try it

Format Max width Max size

Drop PNG, JPG or WebP files here — or click to pick some

Using it from the Figma plugin

Put this page's address in the plugin's Optimizer field:

…

The plugin loads optimus.js and the codec binaries from here once, then does every conversion inside Figma. No image data is sent anywhere.

Using it from your own code

import { optimize } from '…';

const result = await optimize(bytes, { format: 'webp', width: 1600 });
// result: { bytes, mime, format, width, height, quality, inputFormat, inputBytes, steps }

Options

format	`webp` (default), `jpg`, `png`
width	Max width in px. Omit or 0 to keep the source width. Never enlarges.
height	Max height in px. Optional; with width it forms a bounding box.
maxSizeMB	Size budget. Quality steps down 85 → 10 until it fits. PNG is lossless, so it scales down instead — 10% a step, floor 25%.