The image watermark works like this: it stamps text or logo watermarks over images with position, opacity, tiling and size control. Everything happens on your device - the input never leaves your tab unless the tool clearly states it performs a server-side lookup.
How to use the Image Watermark
Select or drop your image.
Adjust the available settings while watching the preview.
Check dimensions, quality and format before exporting.
Download the result and keep the original when quality matters.
Features
Runs on your device via the Canvas and WebAssembly APIs
Batch-friendly when you have several files
Original images stay untouched
Common mistakes to avoid
Over-compressing images that contain small text
Exporting transparency to JPEG
Examples
Input
Result
Portfolio shots, tiled 20% opacity
Every image protected in one batch
Best used for
Getting a reliable answer for image watermark without installing an app
One-off tasks done in under a minute from any device
Checking results before committing them to something important
Working on a phone where desktop software is unavailable
Privacy
Images are processed on your device; nothing is uploaded unless a tool explicitly says a server lookup is involved.
Frequently asked questions
Can watermarks be removed?
Determined editors can remove visible marks - they deter casual reuse, not professional theft. Register copyright for real protection.
Can I use a logo file instead of text?
Yes - upload a PNG logo and position it with the same controls, or stamp text with your choice of size and opacity.
What does the tiling option do?
Repeats the watermark across the whole image in a grid - the pattern that survives cropping when the image will be reused in pieces.