DomPDF – Production Ready Configuration

PHP 

• Version: 5.3 and above
• Settings: allow_url_fopen
• Extensions: MBString (Installation), GD (Installation), DOM(enabled by default)

DomPDF Configuration / Usage

• Enable Remote – def("DOMPDF_ENABLE_REMOTE", true);
• Read/Write access to the DOMPDF_TEMP_DIR
• Use Absolute URL
• Use Full Document Root or Relative (if you’re still unable to view the image)
• Use JPEG

UPDATE (2015-02-17): Security Issues on allow_url_fopen or Is allow_url_fopen safe?