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The Chromium HTML route expects the main HTML file to be named index.html. You can send additional assets (CSS, images, fonts) via the assets option or by passing multiple files; reference them in your HTML by filename only — do not use absolute paths (/img.png) or subdirectories (./assets/img.png), because Gotenberg stores all uploaded files in a single temporary directory.

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Convert HTML to PDF

import { HtmlConverter } from "chromiumly";

const htmlConverter = new HtmlConverter();
const buffer = await htmlConverter.convert({
  html: "path/to/index.html",
});
You can pass a file path string, a Buffer, or a ReadStream. Optional conversion options (e.g. properties, header, footer) go in the same options object.

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Capture HTML as screenshot

import { HtmlScreenshot } from "chromiumly";

const screenshot = new HtmlScreenshot();
const buffer = await screenshot.capture({
  html: "path/to/index.html",
});
Use properties to set image format, quality, and dimensions. See Options.