eps2img

Convert EPS (Encapsulated PostScript) to PNG or JPEG — in the browser, with zero dependencies.

EPS is the PostScript language, not an image format, so eps2img ships a small from-scratch PostScript interpreter that renders straight to a <canvas>. It handles a broad subset of real vector EPS — including Adobe Illustrator exports — and falls back to an embedded raster preview when one exists.

Install

npm install eps2img

Usage

Browser — from a file input:

import { epsToBlob } from 'eps2img';

const blob = await epsToBlob(file, { format: 'png', scale: 2 });
const url = URL.createObjectURL(blob);      // use in <img> or a download link

Or straight to a data URL:

import { epsToDataURL } from 'eps2img';
img.src = await epsToDataURL(arrayBuffer, { format: 'jpeg', quality: 0.9 });

Render to a canvas you control:

import { renderToCanvas } from 'eps2img';
const { canvas, width, height, warnings } = renderToCanvas(bytes, { scale: 3 });
document.body.appendChild(canvas);

Node (needs canvas):

import { createCanvas } from 'canvas';
import { renderToCanvas } from 'eps2img';

const { canvas } = renderToCanvas(fs.readFileSync('logo.eps'), {
  scale: 2, createCanvas: (w, h) => createCanvas(w, h),
});
fs.writeFileSync('logo.png', canvas.toBuffer('image/png'));

Live demo: open demo/index.html on any static server and drop in an .eps file.

Options

| Option | Default | Description | |---|---|---| | scale | 1 | Device pixels per PostScript point (2 ≈ retina). | | format | 'png' | 'png' or 'jpeg'. | | quality | 0.92 | JPEG quality, 0–1. | | background | '#ffffff' | Page color; null for a transparent PNG. | | createCanvas | auto | Canvas factory (required in Node). |

API

renderToCanvas · epsToBlob · epsToPngBlob · epsToJpegBlob · epsToDataURL · epsToImageData · parseEPS

All accept an ArrayBuffer, Uint8Array, latin1 string, or Blob/File.

Limitations

Not a full PostScript engine. Text uses substituted system fonts (no embedded font programs), and gradients, patterns, and shading dictionaries aren't supported. Unsupported operators are skipped and reported in warnings rather than failing the render.

Credits

Created and maintained by exlyndev. Questions or feedback: [email protected]

License

MIT © exlyndev