Add Watermark to Image Online
Overlay custom copyright text watermarks onto photos with adjustable opacity, position, and styling.
How to Use Watermark Image
- Select or drop your photo into the watermarking workspace.
- Type your custom copyright notice or brand name into the text box.
- Adjust font size, color, opacity slider (10% to 100%), and select one of the 9 anchor positions.
- Click 'Download Watermarked' to export your protected photo.
Technical Specifications & How It Works
Watermarking protects digital photography, artwork, and product catalog images against unauthorized distribution and scraping.
Text overlays are rendered with subtle drop shadows to ensure clear legibility across both dark and light backgrounds.
100% Client-Side Privacy: Your images never leave your computer or phone. Processing runs completely in local browser memory via WebAssembly and Canvas APIs. No file data, filenames, or metadata are ever transmitted.
Frequently Asked Questions
What opacity is recommended for watermarks?
An opacity between 60% and 75% balances copyright visibility without completely obscuring the underlying subject.
Can I position watermarks anywhere on the photo?
Use the 9-point grid to pin watermarks to corners, center, or edges.
Is my original image altered?
No, your original file remains untouched on your disk; only the exported copy carries the watermark.