Add Links, Crossed-Out Text & Interactive Notes Annotations to PDF documents in JavaScript using PDFKit Library. Check https://products.documentprocessing.com/annotation/javascript/pdfkit/ for more details.

add-crossed-out-text-to-pdf-in-javascript-using-pdfkit.js

// Include pdfkit library and fs module of Node.js
const PDFDocument = require('pdfkit');
const fs = require('fs');

// Create a new PDF document
const doc = new PDFDocument();

// Create a writable stream to save the PDF
const stream = fs.createWriteStream('annotations.pdf');

// Pipe the PDF document to the writable stream
doc.pipe(stream);
doc.fontSize(36);

// Write the text
doc.text('Strike!', 50, 50);

// Set the line color and width for strikethrough
doc.strokeColor('black');
doc.lineWidth(5);

// Draw a line through the text
const textWidth = doc.widthOfString('Strike!');
doc.moveTo(50, 50 + doc.currentLineHeight() / 2)
   .lineTo(50 + textWidth, 50 + doc.currentLineHeight() / 2)
   .stroke();

// Finalize the PDF document
doc.end();

add-interactive-notes-to-pdf-in-javascript-using-pdfkit.js

// Include pdfkit library and fs module of Node.js
const PDFDocument = require('pdfkit');
const fs = require('fs');

// Create a new PDF document
const doc = new PDFDocument();

// Create a writable stream to save the PDF
const stream = fs.createWriteStream('annotations.pdf');

// Pipe the PDF document to the writable stream
doc.pipe(stream);
doc.fontSize(36);

// Write the text
doc.text('Strike!', 50, 50);

// Set the line color and width for strikethrough
doc.strokeColor('black');
doc.lineWidth(5);

// Draw a line through the text
const textWidth = doc.widthOfString('Strike!');
doc.moveTo(50, 50 + doc.currentLineHeight() / 2)
   .lineTo(50 + textWidth, 50 + doc.currentLineHeight() / 2)
   .stroke();

   const x = 100; // X-coordinate of the note
   const y = 100; // Y-coordinate of the note
   const width = 200; // Width of the annotation
   const height = 50; // Height of the annotation
   const contents = 'Hello i am a note added using the PDFKit library';

   // Add a note annotation to the PDF
   doc.note(x, y, width, height, contents, {
     Title: 'Note',
     Open: true,
     Name: 'Note',
   });

// Finalize the PDF document
doc.end();

add-link-annotation-to-pdf-in-javascript-using-pdfkit.js

// Include pdfkit library and fs module of Node.js
const PDFDocument = require('pdfkit');
const fs = require('fs');

// Create a new PDF document
const doc = new PDFDocument();

// Create a writable stream to save the PDF
const stream = fs.createWriteStream('annotations.pdf');

// Pipe the PDF document to the writable stream
doc.pipe(stream);

// Add the link text
doc.fontSize(25)
   .fillColor('blue')
   .text('This is a link!', 20, 10);

// Measure the text
const width = doc.widthOfString('This is a link!');
const height = doc.currentLineHeight();

// Add the underline and link annotations
doc.underline(20, 10, width, height, {color: 'blue'})
   .link(20, 10, width, height, 'http://example.com/');

// Finalize the PDF document
doc.end();