Online Image Watermark Tool
Add text watermarks to images with 9-grid positions, tile mode, and full style control. 100% private, all processing in your browser
9-Grid Positions
Precise placement or full tile coverage
Privacy First
Your images never leave your device
Full Styling
Font size, color, opacity, rotation
Live Preview
Real-time canvas rendering
Click or drag files here
Batch upload supported
Start adding watermarks
Click or drag an image to the area above to start adding a watermark
Frequently Asked Questions
Will the watermark affect image quality?
Drawing a watermark on the canvas may involve minor recompression. PNG output preserves quality with transparency support; JPEG output uses 92% quality for a smaller file size.
Will my image be uploaded to a server?
No. All watermark drawing is done locally in your browser via Canvas. Your image data never leaves your device, ensuring complete privacy protection.
What image formats are supported?
Supports common formats like JPG/JPEG and PNG for upload. Output can be PNG (supports transparency) or JPEG (smaller size with white background).
What is tile mode?
Tile mode repeats the watermark across the entire image in a grid, commonly used for copyright protection to prevent cropping out a single watermark.
Can I adjust the watermark angle?
Yes. The rotation slider ranges from -90 to 90 degrees. A diagonal angle combined with tile mode is a popular anti-theft choice.
Is this tool free to use?
Completely free. This is a pure frontend online tool - no registration required, no payment needed, just open and use.
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