| backend_config_file | Get backend config file path |
| backend_default_dir | Get default backend directory |
| backend_default_exe | Get default backend executable path |
| backend_release_url | Backend release URL |
| backend_root | Get backend root directory |
| convert_html_to_pdf | Convert local 'HTML' or 'XHTML' file to 'PDF' |
| find_html2pdf_backend | Find configured backend executable |
| install_html2pdf_backend | Install external backend from GitHub Releases |
| launch_html2pdf_app | Launch graphical converter application |
| set_html2pdf_backend | Set backend executable path |