Some test text!
To find text or images and replace it in a PDF.
WebViewer({
fullAPI: true,
// other constructor options
}, viewerElement).then(instance => {
const { docViewer, PDFNet } = instance;
document.getElementById('myBtn').addEventListener('click', async () => {
await PDFNet.initialize();
const doc = await docViewer.getDocument().getPDFDoc();
// Run PDFNet methods with memory management
await PDFNet.runWithCleanup(async () => {
// lock the document before a write operation
// runWithCleanup will auto unlock when complete
doc.lock();
const replacer = await PDFNet.ContentReplacer.create();
const page = await doc.getPage(1);
// replace an image on the page
const target_region = await page.getMediaBox();
const img = await PDFNet.Image.createFromURL(doc, imagename);
await replacer.addImage(target_region, await img.getSDFObj());
// replace a text placeholder
await replacer.addString('NAME', 'John Smith');
// replace text in a given region
const text = "hello world";
await replacer.addText(target_region, text);
await replacer.process(page);
});
// clear the cache (rendered) data with the newly updated document
docViewer.refreshAll();
// Update viewer to render with the new document
docViewer.updateView();
// Refresh searchable and selectable text data with the new document
docViewer.getDocument().refreshTextData();
});
})
Replace PDF text or images
Full code sample which shows how to use pdftron.PDF.ContentReplacer to search and replace text strings and images in existing PDF (e.g. business cards and other PDF templates).
Get the answers you need: Support
Get unlimited trial usage of PDFTron SDK to bring accurate, reliable, and fast document processing capabilities to any application or workflow.
Select a platform to get started with your free trial.
Web
Android
iOS
Windows
Linux
Unlimited usage. No email address required.