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Search & Replace PDF Text or Images in Javascript

Sample Javascript code to use PDFTron SDK for searching and replacing text strings and images inside existing PDF files (e.g. business cards and other PDF templates). Unlike PDF forms, the ContentReplacer works on actual PDF content and is not limited to static rectangular annotation regions. Learn more about our PDF Editing & Manipulation Library.

Step 1: Get your free trial license key, or sign in

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Step 2: Add the code:

//---------------------------------------------------------------------------------------
// Copyright (c) 2001-2019 by PDFTron Systems Inc. All Rights Reserved.
// Consult legal.txt regarding legal and license information.
//---------------------------------------------------------------------------------------
//---------------------------------------------------------------------------------------
// Copyright (c) 2001-2019 by PDFTron Systems Inc. All Rights Reserved.
// Consult legal.txt regarding legal and license information.
//---------------------------------------------------------------------------------------

((exports) => {
  'use strict';

  exports.runContentReplacer = () => {
    const main = async() => {
      try {
        console.log('Beginning Content Replacer Test');

        const inputUrl = '../TestFiles/';
        const inputFilename = 'BusinessCardTemplate.pdf';
        const outputFilename = 'BusinessCard.pdf';

        await PDFNet.initialize();
        const doc = await PDFNet.PDFDoc.createFromURL(inputUrl + inputFilename);
        doc.initSecurityHandler();
        doc.lock();
        console.log('PDFNet and PDF document initialized and locked');

        const replacer = await PDFNet.ContentReplacer.create();
        const page = await doc.getPage(1);
        const img = await PDFNet.Image.createFromURL(doc, inputUrl + 'peppers.jpg');

        const region = await page.getMediaBox();
        const replace = await img.getSDFObj();
        await replacer.addImage(region, replace);
        await replacer.addString('NAME', 'John Smith');
        await replacer.addString('QUALIFICATIONS', 'Philosophy Doctor');
        await replacer.addString('JOB_TITLE', 'Software Developer');
        await replacer.addString('ADDRESS_LINE1', '#100 123 Software Rd');
        await replacer.addString('ADDRESS_LINE2', 'Vancouver, BC');
        await replacer.addString('PHONE_OFFICE', '604-730-8989');
        await replacer.addString('PHONE_MOBILE', '604-765-4321');
        await replacer.addString('EMAIL', 'info@pdftron.com');
        await replacer.addString('WEBSITE_URL', 'http://www.pdftron.com');
        await replacer.process(page);

        const docbuf = await doc.saveMemoryBuffer(PDFNet.SDFDoc.SaveOptions.e_remove_unused);
        saveBufferAsPDFDoc(docbuf, outputFilename);

        console.log('Done. Result saved as ' + outputFilename);
      } catch (err) {
        console.log(err);
      }
      try {
        console.log('Beginning Content Replacer Test');

        const inputUrl = '../TestFiles/';
        const inputFilename = 'newsletter.pdf';
        const outputFilename = 'newsletterReplaced.pdf';

        await PDFNet.initialize();
        const doc = await PDFNet.PDFDoc.createFromURL(inputUrl + inputFilename);
        doc.initSecurityHandler();
        doc.lock();
        console.log('PDFNet and PDF document initialized and locked');

        const replacer = await PDFNet.ContentReplacer.create();
        const page = await doc.getPage(1);
        const region = await page.getMediaBox();
        await replacer.addText(region, 'The quick onyx goblin jumps over the lazy dwarf');
        await replacer.process(page);

        const docbuf = await doc.saveMemoryBuffer(PDFNet.SDFDoc.SaveOptions.e_remove_unused);
        saveBufferAsPDFDoc(docbuf, outputFilename);

        console.log('Done. Result saved as ' + outputFilename);
      } catch (err) {
        console.log(err);
      }
    };
    PDFNet.runWithCleanup(main, window.sampleL); // replace with your own license key and remove the license-key.js script tag
  };
})(window);
// eslint-disable-next-line spaced-comment
//# sourceURL=ContentReplacerTest.js