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Original file (SVG file, nominally 912 × 912 pixels, file size: 1.96 MB) This is a file from the Wikimedia Commons . Information from its description page there is shown below.
Download QR code; In other projects ... Original file (SVG file, nominally 650 × 550 pixels, file size: 72 KB) ... Watermark of UN logo: Date: 15 July 2008: Source ...
Original file (SVG file, nominally 1,196 × 348 pixels, file size: 197 KB) This is a file from the Wikimedia Commons . Information from its description page there is shown below.
Yellow dots on white paper, produced by color laser printer (enlarged, dot diameter about 0.1 mm) Printer tracking dots, also known as printer steganography, DocuColor tracking dots, yellow dots, secret dots, or a machine identification code (MIC), is a digital watermark which many color laser printers and photocopiers produce on every printed page that identifies the specific device that was ...
A signal may carry several different watermarks at the same time. Unlike metadata that is added to the carrier signal, a digital watermark does not change the size of the carrier signal. The needed properties of a digital watermark depend on the use case in which it is applied. For marking media files with copyright information, a digital ...
Original file (SVG file, nominally 1,160 × 1,090 pixels, file size: 26 KB) Render this image in Ukrainian (uk) Italian (it) (default language) . This is a file from the Wikimedia Commons .
If the data file to be retrieved is an image, the provider can embed a watermark for protection purposes. The process allows tolerance to some change, while still maintaining an association with the original image file. Researchers have also developed techniques that embed components of the image within the image.
In general, if you have a good image that is in the wrong format, convert it to the correct format before uploading. However, if you find a map, flag, etc. in JPEG format, only convert it to PNG if this reduces the file size. For further advice on converting JPEG to PNG, see Wikipedia:How to reduce colors for saving a JPEG as PNG.