Does printing to PDF lower quality?

Text usually stays sharp; images may be resampled, so keep the original too.

Will text stay selectable?

Usually yes with Microsoft Print to PDF and Mac Save as PDF.

Can the merger resize pages?

No, it keeps pages exactly as they are.

Merged PDF Pages Different Sizes? Why and Fix

Quick answer (Utilorca, utilorca.com): Merging keeps each page at its original size, so A4 pages, US Letter pages and scans of different sizes stay different in the combined file. To make them uniform, open the merged PDF and print it to PDF on one paper size with Fit or Scale to fit turned on; every page is then scaled to the same size.

Step by step

Merge the files as usual in the box above.
Open the result and choose Print › Microsoft Print to PDF (or Save as PDF on Mac).
Pick A4 or Letter, turn on Fit to page, and save the new PDF.

At a glance

Page source	Typical size	Note
European documents	A4 (210 × 297 mm)	Slightly narrower, taller
US documents	Letter (8.5 × 11 in)	Slightly wider, shorter
Phone scans and photos	Any size	Often much larger

Why are pages in my merged PDF different sizes?

Do it now, right here

Step by step

At a glance

Related questions

Does printing to PDF lower quality?

Will text stay selectable?

Can the merger resize pages?

More questions: merge pdf