mPDF is a PHP library which generates PDF files from UTF-8 encoded HTML. It is based on FPDF and HTML2FPDF (see CREDITS ), with a number of enhancements. mPDF was written by Ian Back and is released under the GNU GPL v2 licence. ⚠ If you are viewing this file on mPDF GitHub repository homepage or on Packagist, please note that the default mPDF Tutorial. Previous Next . mPDF is a PHP library which is used to generate PDF files from UTF-8 encoded HTML. It is based on FPDF and HTML2PDF with a number of enhancements. The original author, Ian Back, wrote mPDF to output PDF files 'on-the-fly' from his website, handling different languages. It is slower than the original scripts e Thermal printing throughout pdf. To Print invoice from pdf in codeigniter, you can use any pdf library to convert HTML to pdf then try to print from pdf with some settings, in this tutorial I will focus on MPDF library because I prefer to use it, for more info I recommend to visit this tutorial using MPDF to convert HTML to pdf.. Now let's create the receipt or the invoice with paper size The yii2-mpdf extension is a Yii2 wrapper component for the mPDF library with enhancements. The mPDF library offers ability to generate PDF files from UTF-8 encoded HTML. This library is based on FPDF and HTML2FPDF, with a number of enhancements.The key features in the library are to be able to generate PDF files 'on-the-fly' from HTML content, handling different languages. mPDF Example 19. Page sizes