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JPEG for photographic images. GIF for animated images. PNG for everything else. While some formats offer multiple compression systems, in general the format and the compression system are tied together. Other image formats should be avoided in most cases: BMP - Images are uncompressed, resulting in larger file sizes. Should usually be converted ...
To make your uploaded file appear in an article, you need to insert it: edit the article and add the syntax [[File:Image name|thumb|Caption]] where you want the file to appear. Important: Image names are case-sensitive. For example, if an image is called Picture.jpg then neither picture.jpg nor Picture.JPG will find it.
Continuously varied JPEG compression (between Q=100 and Q=1) for an abdominal CT scan. JPEG (/ ˈ dʒ eɪ p ɛ ɡ / JAY-peg, short for Joint Photographic Experts Group and sometimes retroactively referred to as JPEG 1) [2] [3] is a commonly used method of lossy compression for digital images, particularly for those images produced by digital photography.
Scale the image to be no greater than the given width or height, keeping its aspect ratio. Scaling up (i.e. stretching the image to a greater size) is disabled when the image is framed. Link Link the image to a different resource, or to nothing. Alt Specify the alt text for the image. This is intended for visually impaired readers.
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 ...
You can make a request for an image by adding {{Image requested}} to the talk page of the article, to see if other Wikipedians have access to an image. Be aware that this may take some time. Please follow the guidelines explained on Wikipedia:Requested pictures. You can also use the images at Category:Wikipedia image placeholders as ...
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