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A watermark is an identifying image or pattern in paper that appears as various shades of lightness/darkness when viewed by transmitted light (or when viewed by reflected light, atop a dark background), caused by thickness or density variations in the paper. [1]
Free images should not be watermarked, distorted, have any credits or titles in the image itself or anything else that would hamper their free use, unless, of course, the image is intended to demonstrate watermarking, distortion, titles, etc. and is used in the related article. Exceptions may be made for historic images when the credit or title ...
To upload images to Commons you can use the Commons Upload Wizard tool, which will guide you through the process. There is an important caveat: Commons accepts only freely licensed images . This means that you cannot upload most images found on the internet, as the vast majority of them are not free.
A digital watermark is called semi-fragile if it resists benign transformations, but fails detection after malignant transformations. Semi-fragile watermarks commonly are used to detect malignant transformations. A digital watermark is called robust if it resists a designated class of transformations. Robust watermarks may be used in copy ...
Free files can be moved to the Wikimedia Commons. ... Media in category "Images with watermarks" The following 107 files are in this category, out of 107 total. "
We only allow uploads of non-free images if no free equivalent is available, or could be created – which means in practice: 1) if a relatively poor but free image is available to us, a better but non-free image cannot be uploaded; and 2) with some exceptions, a non-free image of a living person cannot be used at all, because while the person ...
Images are stored on the Wikipedia website or the partner Wikimedia Commons website. All free content is stored on "Commons" and images that have more onerous copyright restrictions are stored on Wikipedia, under a fair use rationale. Also, images that are used on the Main Page have a local version to prevent vandalism from appearing. Editors ...
Nitro PDF Reader: Extracts Images in original resolution. PDF-XChange: PDF Tools and PDF-XChange print driver allow conversion from many formats to PDF. A "lite" version of the print driver is free for non-commercial (home and academic) but places a watermark on documents; Qiqqa: Converts Microsoft Word document and Web Pages to PDF.
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