Đoạn code PHP ví dụ cách sử dụng html2canvas để chụp hình thẻ div với id là capture:
<!DOCTYPE html>
<html lang="en">
<head>
<title>Capture HTML tag</title>
<?php
$width = 100;
$height = 'auto';
$s = 60;
$fontfile = __DIR__ . '/font.ttf';
$actual_link = ( empty( $_SERVER['HTTPS'] ) ? 'http' : 'https' ) . "://$_SERVER[HTTP_HOST]$_SERVER[REQUEST_URI]";
$base_url = dirname( $actual_link );
$fonturl = $base_url . '/' . basename( $fontfile );
$font_name = 'Agenda';
$x = 50;
$y = 150;
$t = 'Agenda Fantasy Halloween Font';
$color = '#000';
$bg = 'transparent';
$css = "@font-face{font-family:'$font_name';src:url('$fonturl') format('truetype')}";
?>
<style>
body {
margin: 0;
font-family: '<?php echo $font_name; ?>';
}
h1,
h2,
h3,
h4,
h5,
h6 {
margin: 0;
}
h6 {
font-size: 18px;
margin-bottom: 10px;
}
body * {
box-sizing: border-box;
}
<?php echo $css; ?>
</style>
</head>
<body>
<?php
if ( is_numeric( $width ) ) {
if ( $width == 100 ) {
$width .= '%';
} else {
$width .= 'px';
}
}
if ( is_numeric( $height ) ) {
$height .= 'px';
}
$style = sprintf( 'font-size: %s; padding: %s; width: %s; height: %s; background-color: %s', $s . 'px', $x . 'px ' . $y . 'px', $width, $height, 'transparent' );
?>
<div id="capture" style="<?php echo $style; ?>">
<h6>
<em>Example by <span style="font-family: Tahoma;">ldcuong.com</span></em>
</h6>
<h2 style="font-family: '<?php echo $font_name; ?>';"
title="Normal font text"><?php echo $t; ?></h2>
</div>
<script src="html2canvas.min.js"></script>
<script>
if ("function" === typeof html2canvas) {
html2canvas(document.querySelector("#capture"), {
allowTaint: true,
useCORS: true,
backgroundColor: null,
removeContainer: true
}).then(canvas => {
document.body.appendChild(canvas);
const imageURL = canvas.toDataURL("image/png");
// Create a temporary link element
const link = document.createElement("a"),
img = document.createElement("img");
link.href = imageURL;
img.src = link.href;
link.download = "captured_image.png";
link.title = "Download image";
img.alt = link.title;
link.appendChild(img);
// Simulate a click on the link to trigger the download
document.body.appendChild(link);
});
}
</script>
</body>
</html>
Bên dưới là hình ảnh kết quả của đoạn code bên trên:

Chụp ảnh thẻ div với html2canvas