What is a Photo Watermark?

    A watermark is a recognizable image or pattern in paper that shows in various shades of lightness / darkness when viewed by transmitted light (or when viewed by reflected light, atop a dark background), caused by thickness variations in the paper. There are two main types of watermark, the Dandy Roll process, and the more complex Cylinder Mould process. A watermark is very useful in the examination of paper because it can be used for dating, identifying sizes, mill trademarks and locations, and the quality of a paper.
    (comes from wikipedia)

How to Watermark Pictures?

    Can you find the difference between two pictures?
watermarked picture

Watermarked Picture

picture without watermark

Original Picture

    Once you have decided to protect your pictures with watermarks, you will need to decide on a specific watermark. It is good to be consistent and always use the same type.
    · Image watermark :

It could be your company logo, personal sign or any image you want to place on the original picture. It is more elaborate than text watermark. You just have to create it only once, and it could be pretty nice if you have a business logo and use it for commercial purpose. (How to Add Image Watermark to Picture >)

    · Text watermark :

It’s where you use a simple text watermark, but you identify yourself or something about the image. Sometimes this can automatically be made the file name. You can also use your own name, or the have it advertise your Web site. It’s more clear and direct than image watermark. (How to Add Text Watermark to Picture >)

    · Digital watermark :

It’s usually called invisible watermark. Information is added as digital data to pictures, but it cannot be perceived as such. An important application of invisible watermarking is to copyright protection systems, which are intended to prevent or deter unauthorized copying of digital media.

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