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| <!DOCTYPE html>
<html lang="en">
<head>
<meta charset="UTF-8">
<meta name="viewport" content="width=device-width, initial-scale=1.0">
<title>HTML2PDF with Images Example</title>
<!-- Include html2pdf.js library -->
<script src="https://cdnjs.cloudflare.com/ajax/libs/html2pdf.js/0.10.1/html2pdf.bundle.min.js"></script>
<style>
/* Styles for both screen and PDF */
.content {
max-width: 800px;
margin: 0 auto;
padding: 20px;
font-family: Arial, sans-serif;
}
.image-container {
margin: 20px 0;
}
img {
max-width: 100%;
height: auto;
}
button {
padding: 10px 15px;
background-color: #4CAF50;
color: white;
border: none;
cursor: pointer;
font-size: 16px;
border-radius: 4px;
}
button:hover {
background-color: #45a049;
}
/* PDF-only styles (will be applied when generating PDF) */
.pdf-styles {
display: none;
}
/* Class that will be temporarily added during PDF generation */
.for-pdf-generation .pdf-styles {
display: block;
}
/* PDF-specific styles */
@media print {
body {
-webkit-print-color-adjust: exact !important;
print-color-adjust: exact !important;
}
/* Example PDF-specific styles */
.for-pdf-generation h1 {
color: #2a5885;
page-break-before: always;
}
.for-pdf-generation .image-container {
page-break-inside: avoid;
border: 1px solid #ddd;
padding: 10px;
}
.for-pdf-generation img {
max-width: 90%;
margin: 0 auto;
display: block;
}
/* Hide elements from PDF */
.for-pdf-generation .screen-only {
display: none;
}
}
</style>
</head>
<body>
<div class="content">
<h1>HTML2PDF with Images Demo</h1>
<div id="content-to-print">
<!-- PDF-only elements (not visible on screen until PDF generation) -->
<div class="pdf-styles">
<div class="page-header">Generated on: <span id="pdf-date"></span></div>
<hr>
</div>
<h2>This content will be converted to PDF</h2>
<p>Lorem ipsum dolor sit amet, consectetur adipiscing elit. Nullam in dui mauris.</p>
<div class="image-container">
<h3>Sample Image 1</h3>
<img src="/api/placeholder/400/300" alt="Sample placeholder image">
<!-- PDF-only caption -->
<div class="pdf-styles">
<p class="image-caption">This caption only appears in the PDF version</p>
</div>
</div>
<p>Additional text after the first image. The images should appear in the PDF output.</p>
<!-- This element only shows on screen, not in PDF -->
<div class="screen-only">
<p>This text will only be visible on screen, not in the PDF.</p>
</div>
<div class="image-container">
<h3>Sample Image 2</h3>
<img src="/api/placeholder/400/200" alt="Another placeholder image">
<!-- PDF-only caption -->
<div class="pdf-styles">
<p class="image-caption">PDF-only caption for second image</p>
</div>
</div>
<p>Final paragraph of text to demonstrate that everything is properly included in the PDF.</p>
<!-- PDF-only footer -->
<div class="pdf-styles">
<hr>
<div class="page-footer">Page <span class="pageNumber"></span> of <span class="totalPages"></span></div>
</div>
</div>
<script>
// Set the PDF date when generating
document.getElementById('pdf-date').textContent = new Date().toLocaleDateString();
</script>
<div style="display: flex; gap: 10px; margin-top: 20px;">
<button onclick="generatePDF()">Generate PDF with Banner</button>
<button onclick="generatePDFCustomBanner()" style="background-color: #2196F3;">Generate PDF with Custom Banner</button>
</div>
<!-- Custom Banner Template (Hidden on screen) -->
<div id="custom-banner-template" style="display: none;">
<div style="width: 100%; height: 70px; background: linear-gradient(90deg, #4a148c 0%, #7b1fa2 100%); color: white; display: flex; align-items: center; justify-content: space-between; padding: 10px 20px;">
<div style="display: flex; align-items: center;">
<img src="/api/placeholder/60/60" alt="Company Logo" style="border-radius: 8px; margin-right: 15px;">
<div>
<div style="font-size: 22px; font-weight: bold;">Confidential Report</div>
<div style="font-size: 12px;">For internal use only</div>
</div>
</div>
<div style="text-align: right;">
<div id="banner-date" style="font-size: 12px;"></div>
<div id="banner-page" style="font-size: 12px;"></div>
</div>
</div>
</div>
</div>
<script>
function sanitizeHTML(html) {
// Create a new DOMParser
const parser = new DOMParser();
// Parse the HTML string
const doc = parser.parseFromString(html, 'text/html');
// Find and remove potentially dangerous elements
const scripts = doc.querySelectorAll('script:not([type="application/json"])');
scripts.forEach(script => script.remove());
// Remove inline event handlers from all elements
const allElements = doc.querySelectorAll('*');
allElements.forEach(el => {
// Remove all attributes that start with "on" (like onclick, onmouseover, etc.)
for (let i = el.attributes.length - 1; i >= 0; i--) {
const attrName = el.attributes[i].name;
if (attrName.startsWith('on')) {
el.removeAttribute(attrName);
}
}
// Remove href attributes that use javascript: protocol
if (el.hasAttribute('href')) {
const href = el.getAttribute('href');
if (href.toLowerCase().startsWith('javascript:')) {
el.removeAttribute('href');
}
}
// Remove src attributes that use javascript: protocol
if (el.hasAttribute('src')) {
const src = el.getAttribute('src');
if (src.toLowerCase().startsWith('javascript:')) {
el.removeAttribute('src');
}
}
});
// Use XMLSerializer to convert back to string
const serializer = new XMLSerializer();
return serializer.serializeToString(doc);
}
function generatePDF() {
// Select the element to convert
const element = document.getElementById('content-to-print');
// Get the HTML content and sanitize it
const htmlContent = element.innerHTML;
const sanitizedHTML = sanitizeHTML(htmlContent);
// Create a temporary div with the sanitized content
const tempDiv = document.createElement('div');
tempDiv.innerHTML = sanitizedHTML;
tempDiv.classList.add('for-pdf-generation');
// Temporarily add to the document (hidden)
tempDiv.style.position = 'absolute';
tempDiv.style.left = '-9999px';
document.body.appendChild(tempDiv);
// Create a banner template
const createBanner = function(currentPage, pageCount) {
// Sanitize the banner content
const bannerHTML = `
<div style="text-align: center; background-color: #3f51b5; color: white; padding: 15px; width: 100%; height: 50px; display: flex; align-items: center; justify-content: space-between; box-shadow: 0 2px 5px rgba(0,0,0,0.3);">
<div style="display: flex; align-items: center;">
<div style="width: 40px; height: 40px; background-color: #fff; border-radius: 50%; margin-right: 15px; display: flex; align-items: center; justify-content: center;">
<span style="color: #3f51b5; font-weight: bold; font-size: 18px;">PDF</span>
</div>
<div style="font-size: 20px; font-weight: bold;">${document.title || 'Company Document'}</div>
</div>
<div>
<span style="font-size: 12px;">Generated: ${new Date().toLocaleDateString()}</span>
<br>
<span style="font-size: 12px;">Page ${currentPage} of ${pageCount}</span>
</div>
</div>`;
return sanitizeHTML(bannerHTML);
};
// Configure html2pdf options with higher resolution settings and banner
const opt = {
margin: [70, 10, 20, 10], // [top, right, bottom, left] - increased top margin for the header banner
filename: 'document-with-images.pdf',
image: {
type: 'jpeg',
quality: 1.0 // Maximum image quality
},
html2canvas: {
scale: 4, // Increased from 2 to 4 for higher resolution
useCORS: true, // Important for loading images from other domains
logging: true,
letterRendering: true,
imageTimeout: 0, // No timeout for image loading
backgroundColor: null // Preserve background
},
jsPDF: {
unit: 'mm',
format: 'a4',
orientation: 'portrait',
compress: false // Avoid compression artifacts
},
// Add header (banner) functionality
pagebreak: { mode: 'avoid-all' },
header: {
height: '60mm',
contents: {
first: function(currentPage, pageCount) {
return createBanner(currentPage, pageCount);
},
2: function(currentPage, pageCount) {
return createBanner(currentPage, pageCount);
},
3: function(currentPage, pageCount) {
return createBanner(currentPage, pageCount);
},
// You can use a function for all pages
every: function(currentPage, pageCount) {
return createBanner(currentPage, pageCount);
}
}
}
};
// Generate PDF with banner
html2pdf().from(tempDiv).set(opt).toPdf().get('pdf').then(function(pdf) {
// PDF has been generated
// Remove temporary div
document.body.removeChild(tempDiv);
return pdf;
}).save();
}
// Helper function to add custom CSS to the PDF
function addCustomCSSForPDF() {
// Create a new style element for PDF-specific styles
const styleElement = document.createElement('style');
styleElement.id = 'pdf-only-styles';
styleElement.textContent = `
/* Additional dynamic PDF-only styles can be added here */
.page-header {
font-size: 12pt;
text-align: center;
margin-bottom: 20px;
}
.page-footer {
font-size: 10pt;
text-align: center;
color: #777;
margin-top: 20px;
}
`;
// Append to head
document.head.appendChild(styleElement);
return function() {
// Remove the style element when done
document.head.removeChild(styleElement);
};
}
</script>
</body>
</html>
|