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How to Fix a Scanned PDF Whose Pages Are Different Sizes

Published: Oct 19, 2026 | Updated: Oct 19, 2026 | About (Japanese)

Key points
  • Choose a PDF
  • Choose "Same as page 1" or "A4"
  • Save and check

PDFs made from scans or by merging several files can have pages of different sizes. Resize PDF Pages to One Size fixes that.

Steps

  1. Choose a PDF.
  2. Choose "Same as page 1" to match the first page, or a paper size such as "A4".
  3. Tap "Resize and create the PDF".
  4. Check page 1 in the preview, then save.

Why it happens

Use "Resize PDF Pages to A4 or Another Paper Size" (free)

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