PDF to PNG API

npm install pdfjs-dist

import * as pdfjsLib from 'pdfjs-dist';

// Initialize worker
pdfjsLib.GlobalWorkerOptions.workerSrc =
  'https://cdnjs.cloudflare.com/ajax/libs/pdf.js/3.11.174/pdf.worker.min.js';

// Load PDF
const pdf = await pdfjsLib.getDocument(pdfData).promise;
const page = await pdf.getPage(1);

// Render to canvas
const viewport = page.getViewport({ scale: 2 });
const canvas = document.createElement('canvas');
const context = canvas.getContext('2d');

canvas.width = viewport.width;
canvas.height = viewport.height;

await page.render({ canvasContext: context, viewport }).promise;

// Convert to PNG blob
const blob = await new Promise(resolve =>
  canvas.toBlob(resolve, 'image/png')
);