How does the mPdf library compare to PDFlib and dompdf for converting HTML to PDF in PHP?

The issue is converting HTML to PDF in PHP. PDFlib is a commercial library with extensive features but comes with a cost. dompdf is a free library but has limitations in terms of performance and CSS support. mPdf is a free and open-source library that offers a good balance of features, performance, and CSS support.

// Using mPdf library to convert HTML to PDF in PHP
require_once 'vendor/autoload.php'; // Include mPdf library

$mpdf = new \Mpdf\Mpdf(); // Initialize mPdf object

$html = '<h1>Hello World!</h1>'; // HTML content to convert to PDF

$mpdf->WriteHTML($html); // Write HTML content to mPdf object

$mpdf->Output('output.pdf', 'D'); // Output PDF to browser for download