Exporting Scenes to PDF

I want to export my scenes to PDF.
To do this I previewed each scene individually and exported to PDF but with some scene contents moving over the bottom edge of the page.
I am not sure if this is the right approach to do this.
What size should my scene be to fit on a standard A4 PDF page?

Looks like if you want 300 DPI, it would require a scene size of: 2480 x 3508. So set your scene size to that, and then set the ‘scale’ of your PDF during printing to be 100%.

You might want to try saving as PDF in Chrome, Safari, and Firefox and see which one gives you better results. They all have unique differences during printing / PDF generation.

Thank you Daniel
Will try this now
Much appreciated