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Specifying a size does not just change the apparent image size using HTML; it actually generates a resized version of the image on the fly and links to it appropriately. This happens whether or not you specify the size in conjunction with "thumb". This means the server does all the work of changing the image size, not the web browser of the user.
Image scaling can be interpreted as a form of image resampling or image reconstruction from the view of the Nyquist sampling theorem.According to the theorem, downsampling to a smaller image from a higher-resolution original can only be carried out after applying a suitable 2D anti-aliasing filter to prevent aliasing artifacts.
Adjustments, new tools and functions, JPEG quality option improved 3.6.5 July 5, 2013 Bug fixes for Sharpen, Blur and Bloom filters, Blur Brush upgraded 1.0 October 23, 2013 Forked into Photoscape X ("Windows XP, 7, Vista, or 8, please use PhotoScape 3.7.") 2.0 December 9, 2014 2.1 January 8, 2015 2.2 April 28, 2015 2.3 October 28, 2015 2.4
This is an accepted version of this page This is the latest accepted revision, reviewed on 5 February 2025. 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 ...
name, date, size, user-defined Shotwell: Yes Yes Yes No Yes fixed size Yes Thumbs, Events (dates), tags Yes Yes Title, Exposure Date STDU Viewer: Yes No: Yes fit to width, fit to height, fit to size No: Yes: No: No: Yes: No: Windows Photo Viewer: Yes Yes Yes 1:1, fit, in/out Yes No No No Yes No XnView and XnViewMP Yes Yes Yes 1:1, fit width and ...
Existing JPEG files can be compressed a bit more, with no additional loss in quality, using jpegtran -optimize. This results in a smaller file, but the compression is slower. Jpegtran is part of libjpeg. A package called littleutils contains a script called opt-jpg that automates JPEG optimization, using jpegtran as the underlying engine.