Image Watermarker

Free

Add text and image watermarks to your photos. Use either or both. Live preview with smooth debouncing. All processing happens in your browser.

Tool workspace

Upload images to see live watermarked previews

Watermark Wisdom

The First Watermark

Watermarks date back to 1282 in Italy, where papermakers pressed wire patterns into wet paper to identify their mills. The term "watermark" comes from the fact that the mark was only visible when the paper was held up to light — like looking through water.

Invisible Watermarks

Digital invisible watermarks embed data into the least significant bits of image pixels. The human eye cannot see them, but software can detect and extract them even after cropping, compression, or resizing.

Copyright Protection

A visible watermark does not technically prevent theft, but it does make stolen images less valuable. Studies show watermarked images are 80% less likely to be reused without permission than unmarked ones.
Pro Tip: For subtle protection, use white text at 15-20% opacity in a corner. For theft deterrence, use tiled watermarks at 30-40% opacity with slight rotation.
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