TCPDF is a Free Libre Open Source PHP class for generating PDF documents without requiring external extensions. TCPDF project was started in 2002 and now it is freely used all over the world by millions of people. TCPDF supports all standard page formats and custom page formats, custom margins and units of measure, UTF-8 Unicode, RTL languages, some XHTML code, 1D and 2D barcodes, TrueTypeUnicode, TrueType, Type1 and encoding, images, graphic functions, transparency, clipping, bookmarks, javascript, forms, page compression and encryption, file attachments, templates and much more.