Watermark Tool Guide
Draw a text watermark onto a picture, choosing the corner, size, colour and opacity.
Watermark Tool draws a line of text into the pixels of a picture in your browser, so the mark travels with the image instead of sitting in a layer that can be switched off. The size is a percentage of the shorter side, which keeps it in proportion on tall or wide pictures.
Watermark a throwaway image
Choose a disposable image under Image. Leave Text as © ilham.dev, Position on Bottom right, Size at 4% and Opacity at 80%, with Dark outline for contrast ticked. The Preview should show the text in the bottom-right corner. Tick Add today’s date and the caption gains a · YYYY-MM-DD suffix. Clear Dark outline for contrast and the text gets harder to read over a busy area. Choose Download to save <name>-watermarked.png.
The output is always a PNG with a -watermarked suffix, so the original file is untouched. The mark is baked into the pixels, which means it survives sharing and screenshots, but someone determined can crop or edit it out; treat a watermark as a deterrent, not a lock.
Where your input goes
Processing runs in your browser. The tool does not upload your input to ilham.dev.
Related guide
For more background, read Practical Image Tools.
Questions you might have
- How large should the watermark be?
- Four per cent of the shorter side is small enough to stay out of the way but large enough to read on a phone. Raise it toward ten per cent when the picture will be shown at a large size.
- Why is there a dark outline?
- White text disappears on a bright sky and black text disappears in shadow. A thin dark stroke around the letters keeps them readable on either, and it can be turned off when the background is known.
- Can someone remove the watermark?
- The text is part of the pixels rather than a separate layer, so removing it means editing the image. A determined person still can, which is why a watermark deters rather than prevents.