How to add a watermark to images
- Choose one or more images.
- Type your text, or switch to Logo and choose your logo file.
- Set the size, opacity, and rotation. Pick a spot on the position grid, or drag the watermark on the preview.
- Press Download. Several images come as one ZIP file.
A watermark at 40 to 60 percent opacity is easy to see without ruining the picture. Add a shadow to keep light text readable on bright photos. Select any image in the list to check how the watermark looks on it.
Questions
Are my images uploaded?
No. Each image is drawn and saved in your browser tab. Nothing is sent to a server, so unreleased work stays private.
Can I watermark many images at once?
Yes. Add as many images as you like. They all get the same watermark settings and download together in one ZIP file. The picture shown in the preview is only for checking the look.
How do I use my logo?
Switch the type to Logo or image and choose the file. A PNG or WebP with a transparent background works best. The logo keeps its proportions; use Size to set its width.
What does tiled mode do?
It repeats the watermark in staggered rows across the whole picture, usually tilted. This is harder to crop out than one mark in a corner.
Will the watermark lower the image quality?
PNG output has no quality loss. JPG and WebP are saved at high quality. Choose Same as original to keep each file in its own format; formats browsers cannot write, such as GIF or BMP, are saved as PNG.
Credits
Built on fflate (MIT). OneTooling is not affiliated with that project.