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2. Image conversion - Wikipedia

   en.wikipedia.org/wiki/Image_conversion

   Like any resampling operation, changing image size and bit depth are lossy in all cases of downsampling, such as 30-bit to 24-bit or 24-bit to 8-bit palette-based images. While increasing bit depth is usually lossless, increasing image size can introduce aliasing or other undesired artifacts.

3. File:Abell 30 optical close.jpg - Wikipedia

   en.wikipedia.org/.../File:Abell_30_optical_close.jpg

   File:Abell 30 optical close.jpg. Add languages. ... Original file (864 × 864 pixels, file size: 443 KB, MIME type: image/jpeg) This is a file from the Wikimedia Commons.

4. Wikipedia : Featured picture criteria/Image size

   en.wikipedia.org/.../Image_size

   Compression of an image to reduce file size (in Kb) is usually "lossy" and is not advised for featured pictures. Image compression will reduce download times and save disk space, but it does so at the expense of fine detail and overall image quality. If in doubt, when saving JPEG files, always select the "maximum" quality setting.

5. Image file format - Wikipedia

   en.wikipedia.org/wiki/Image_file_format

   The JPEG filename extension is JPG or JPEG. Nearly every digital camera can save images in the JPEG format, which supports eight-bit grayscale images and 24-bit color images (eight bits each for red, green, and blue). JPEG applies lossy compression to images, which can result in a significant reduction of the file size.

6. JPEG - Wikipedia

   en.wikipedia.org/wiki/JPEG

   This is an accepted version of this page This is the latest accepted revision, reviewed on 31 December 2024. Lossy compression method for reducing the size of digital images For other uses, see JPEG (disambiguation). "JPG" and "Jpg" redirect here. For other uses, see JPG (disambiguation). JPEG A photo of a European wildcat with the compression rate, and associated losses, decreasing from left ...

7. File:4,6x30 SP.jpg - Wikipedia

   en.wikipedia.org/wiki/File:4,6x30_SP.jpg

   Original file (1,174 × 250 pixels, file size: 33 KB, MIME type: image/jpeg) This is a file from the Wikimedia Commons . Information from its description page there is shown below.