Trích Xuất Văn Bản Từ File PDF Bằng JavaScript & Node.js

npm install pdf-parse

import fs from 'fs';
import pdf from 'pdf-parse';

export async function extractPdfText(filePath: string) {
  const dataBuffer = fs.readFileSync(filePath);

  const data = await pdf(dataBuffer);

  return {
    pageCount: data.numpages,
    text: data.text,
    info: data.info,
    metadata: data.metadata,
  };
}

import * as pdfjsLib from 'pdfjs-dist';

// Thiết lập nguồn worker
pdfjsLib.GlobalWorkerOptions.workerSrc = '//cdnjs.cloudflare.com/ajax/libs/pdf.js/3.11.174/pdf.worker.min.js';

export async function extractTextInBrowser(file: File): Promise<string> {
  const arrayBuffer = await file.arrayBuffer();
  const pdf = await pdfjsLib.getDocument({ data: arrayBuffer }).promise;
  let fullText = '';

  for (let i = 1; i <= pdf.numPages; i++) {
    const page = await pdf.getPage(i);
    const content = await page.getTextContent();
    const pageText = content.items.map((item: any) => item.str).join(' ');
    fullText += `--- Trang ${i} ---\n${pageText}\n\n`;
  }

  return fullText;
}