Image Watermark Tool
Overlay text at a chosen corner or the center, then adjust size and opacity before exporting the watermarked PNG.
How this tool works
The browser draws the source image to canvas and then paints stroked and filled text at the selected coordinates with the chosen alpha transparency.
Example
A 36-pixel, 65%-opacity label in the bottom-right can identify a preview image without completely covering the underlying content.
Common questions
Is this intended as strong copyright protection?
No. A visible watermark can discourage casual reuse but can often be cropped or edited out.
Does the original image change?
No. The tool creates a new downloadable image and does not modify the source file.