JSFiddle - React, Tailwind, and code Playground

by dshilkret

HTML

<!DOCTYPE html>
<html lang="en">
<head>
  <meta charset="UTF-8">
  <meta name="viewport" content="width=device-width, initial-scale=1.0">
  <title>Editable PDF Form</title>
  <style>
    body {
      font-family: Arial, sans-serif;
    }
    #pdfCanvas {
      border: 1px solid black;
    }
    #formOverlay {
      position: absolute;
      top: 0;
      left: 0;
      pointer-events: none;
    }
    .input-field {
      position: absolute;
      background: rgba(255, 255, 255, 0.8);
      border: 1px solid #ccc;
      padding: 2px;
      font-size: 14px;
      pointer-events: auto;
    }
  </style>
</head>
<body>
  <input type="file" id="pdfFileInput" accept="application/pdf">
  <div style="position: relative;">
    <canvas id="pdfCanvas"></canvas>
    <div id="formOverlay"></div>
  </div>
  <button id="saveButton">Save Form</button>

  <script src="https://cdnjs.cloudflare.com/ajax/libs/pdf.js/2.14.305/pdf.min.js"></script>
  <script src="https://cdn.jsdelivr.net/npm/pdf-lib/dist/pdf-lib.min.js"></script>
  <script>
    const pdfFileInput = document.getElementById('pdfFileInput');
    const pdfCanvas = document.getElementById('pdfCanvas');
    const overlay = document.getElementById('formOverlay');
    const saveButton = document.getElementById('saveButton');

    let pdfDoc = null; // Holds the loaded PDF document
    let formFields = []; // Holds form fields detected

    const pdfjsLib = window['pdfjs-dist/build/pdf'];
    pdfjsLib.GlobalWorkerOptions.workerSrc =
      'https://cdnjs.cloudflare.com/ajax/libs/pdf.js/2.14.305/pdf.worker.min.js';

    pdfFileInput.addEventListener('change', async (event) => {
      const file = event.target.files[0];
      if (file) {
        const fileReader = new FileReader();
        fileReader.onload = async (e) => {
          const pdfBytes = new Uint8Array(e.target.result);
          await renderPDF(pdfBytes);
        };
        fileReader.readAsArrayBuffer(file);
      }
    });

    async function renderPDF(pdfBytes) {
...