Image watermark on your computer

Your PNG or JPG logo centered on every page with the size and opacity you choose, with live preview. Free, no uploads.

100% private: everything runs on your computer, your files never leave your device.

1. Upload your PDF - it opens locally on your computer
2. Pick your logo and adjust size and opacity
3. Download the watermarked PDF

Frequently asked questions

Is adding a logo watermark free?

Yes, the image watermark tool is free, with no uploads and no signup.

Are my PDF and logo uploaded anywhere?

No. Both the document and the logo image are processed locally in your browser and never sent to a server.

Is there a file size limit for the PDF?

No hard limit. Everything runs locally, so the practical maximum depends on your device's memory.

How is the logo placed on the pages?

Your PNG or JPG logo is centered on every page. You adjust its size and opacity with a live preview before downloading the watermarked PDF.

Can I use a photo instead of a logo?

Any PNG or JPG image works. Lower the opacity for a subtle background effect, or keep it high for a prominent mark.

PDF Editor

• Edit PDF
• Sign PDF
• Sign with certificate
• Create PDF Form
• Fill PDF Form
• Watermark PDF
• PDF stamps
• Page numbers
• Header & footer
• Bates Numbering
• Crop PDF
• Resize PDF
• Overlay PDF
• Remove annotations
• Remove PDF images

All tools

Photos rather than PDFs? Try OléPIC, our image tools.