wkhtmltopdf

Headless command-line tool (and C library) that renders HTML into PDF using the Qt WebKit rendering engine, without requiring a display server or window manager — long the default choice for server-side 'print this webpage to PDF' pipelines before headless Chrome existed. Can capture live URLs or local HTML files, applying the same CSS/JavaScript rendering a real browser would. Archived and unmaintained since Qt WebKit was deprecated; numerous language wrappers throughout this directory still drive it as a subprocess.