What does watermark mean?
A watermark is a mark placed in or over a document, photograph, video, or other digital work to identify its creator, owner, or rights holder. In paper making, a watermark is embedded in the sheet and becomes visible when the paper is held up to light; digital watermarks may be plainly visible, faint, or concealed in the file's data. The word can also refer figuratively to a subtle trace or influence, such as “a watermark of anxiety” in a story. As a verb, to watermark means to apply such a mark, often to discourage unauthorized reuse or establish authorship. Watermarks are especially associated with copyright protection, publishing, photography, and online media, although they can also serve identification, document security, or decorative purposes. The term is neutral in itself, but in discussions about online images it often implies ownership or control over copying. Because watermarks range from conspicuous overlays to nearly invisible embedded signals, their effect depends on their design and intended audience.
A mark embedded in, printed on, or overlaid upon a work to identify its source, creator, owner, or rights holder; in paper, such a mark is traditionally visible when the sheet is held up to light.
"The image carried the photographer's watermark across its lower corner."
Digital and visible watermarks are now common, but the traditional paper sense remains standard.
To apply a watermark to an image, document, video, or other work.
"She watermarked each preview before sharing it with potential buyers."
This use is common in digital publishing and image sharing, especially when discouraging unauthorized copying.
The plural refers to multiple identifying marks or to marks belonging to different works or owners.
"The forensic expert found faint watermarks from two different paper mills."
A paper watermark was originally a maker's mark that appeared only when the page was held up to the light—a literal glimpse through the sheet.
Reviewed by Deb Chak, Editor. AI-assisted content curated by RJS Tech Solutions LLP.
Where does watermark come from?
Watermark combines the English words water and mark and was used by the late 17th century for a maker's mark embedded in paper and visible when the sheet was held against light. Its original sense therefore referred literally to a pattern made visible by transmitted light. In the late 20th century, the term extended to digital images, documents, and other media, where a mark might be visibly superimposed or invisibly encoded. Its English relatives include compounds built with mark, such as bookmark, landmark, and trademark.
Related word forms
How watermark is actually used
The noun is especially common in publishing, photography, and online media. In a digital context, it often implies copyright protection or a claim of authorship, although it can also identify a source or indicate a preview. As a verb, it usually means to place a watermark on a work; the related adjective or participial form is 'watermarked'.
Easily confused with watermark
A watermark identifies or protects a particular work, while a trademark is a name, symbol, or sign used to distinguish goods or services in commerce.
A watermark is embedded in or applied to an object, whereas a water mark is a line showing the level of water.