Use the print dialog
Click Print Calendar, then choose Save as PDF.
x-calendar
Save Calendar as PDF
Save any printable calendar as a PDF by using your browser print dialog. Choose Save as PDF instead of a printer.
Month and year views
Both monthly and yearly calendars can be saved.
Paper size matters
Choose A4 or Letter before saving if you need a specific PDF size.
Clean output
Navigation and controls are hidden in the PDF print view.