PDF Mikata

How to Add a Seal or Stamp Image to a PDF

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

Key points
  • Stamp on white paper and photograph it
  • Choose "Image" and pick the photo
  • Tap the page to place it

The "Image" option of Fill In a PDF lets you place a photo of a seal on a PDF.

Preparation

  1. Stamp the seal on white paper using ink that shows clearly.
  2. Photograph it from directly above in good light, leaving a little margin.

Steps

  1. Choose a PDF, then choose "Image" under "What to add".
  2. Set "White areas" to "Make transparent" and choose the photo.
  3. Tap where you want it on the page.
  4. Adjust the size and position with "−", "+" and the arrows.
  5. Tap "Add to the PDF and create it" and save.
An image of a seal may not replace a registered seal. Check the recipient's rules.
Use "Fill In a PDF: Add Text, Date, Signature and Marks" (free)

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