#PNG Output

ClawPDF includes PNG output so Node users do not need a native canvas package.

#Page PNG

page.png(...) returns compressed PNG bytes asynchronously:

import { writeFile } from "node:fs/promises";

const png = await pdf.page(1).png({ dpi: 144, forms: true });
await writeFile("page.png", png);

page.pngSync(...) returns PNG bytes synchronously using stored zlib blocks. The output is larger, but it is useful when a strictly sync path matters.

const png = pdf.page(1).pngSync({ scale: 2 });

#Standalone Encoding

You can encode RGBA bytes directly:

import { encodePng } from "clawpdf";

const compressed = await encodePng(rgba, { width, height });
const stored = encodePng(rgba, { width, height, compress: false });

On Node, compressed PNG uses native node:zlib. In browsers, it uses CompressionStream when available and falls back to stored zlib blocks.