Image watermarking
Any GIF or JPEG image (although not animated GIFs) can be used as watermarking images.
Ideally the image should be smaller than the images that are going to be watermarked.
Image and text watermarking cannot be used together.
Forcing transparency
You may have an image that has a background color you want to remove. By switching on
the "force transparency" option, H2Omarker will display the watermarking image in
a seperate window and you should then click on the color that is to be transparent.
The gray-out filter
The image can be used without any change or one of two filter can be applied:
- Gray-out - which yields a black and white (ie.grayscale) image
- Gray-out & reverse - which yields a black and white image as a negative (black becomes
white and white becomes black).