Examples

HTML to an in-memory image buffer with JavaScript and Puppeteer

Install Puppeteer

npm install puppeteer

Installing the puppeteer package also downloads a compatible Chrome for Testing build, so there is nothing else to set up. The examples use ES modules — run them with node file.mjs, or set "type": "module" in your package.json.

Get the image as an in-memory buffer

import puppeteer from 'puppeteer';

const browser = await puppeteer.launch();
const page = await browser.newPage();
await page.setContent('<html><body><h1>Hello World</h1></body></html>');
const image = await page.screenshot(); // Uint8Array, not written to disk
console.log(`got ${image.byteLength} bytes`);
await browser.close();

Find out how to convert HTML to a base64 image with JavaScript and Puppeteer.

That was 8 lines of code — plus a browser to run in production

Keeping headless browsers fed, patched and scaled is a job in itself. We built Urlbox so the same screenshot is one API call: 

curl "https://api.urlbox.com/v1/YOUR_API_KEY/png?url=https://example.com"

Try the Urlbox screenshot API — free trial, no browser babysitting.