Add Image Stamp

An image stamp places a logo, seal or graphic onto every page of a PDF. Businesses use it to brand documents, add an official stamp, or mark pages with a recurring image.

ColaPDF lets you upload a PNG or JPG, set its position and opacity, and stamp it across the document in one pass — all locally in your browser, so your branding assets and files stay private.

How it works

1. Upload your PDF
2. Upload the image you want to stamp (PNG or JPG)
3. Choose position, size and opacity
4. Click Apply Image Stamp and download

Tips

• Use a transparent PNG logo so the background of the page shows through cleanly.
• Reduce opacity slightly for a subtle, professional branded look.
• Place the stamp in a corner so it does not cover the main content.

Frequently asked questions

What image formats are supported?

PNG (with transparency) and JPG.

Can I tile the image across the page?

Yes — choose the Tile position option.

Are files uploaded?

No. Everything runs in your browser.

Can I stamp only specific pages?

Currently the stamp is applied to all pages. Per-page selection is coming soon.