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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.
This page was last edited on 14 September 2024, at 10:10 (UTC).; Text is available under the Creative Commons Attribution-ShareAlike 4.0 License; additional terms may apply.
If you need a test image for permanent demonstration purposes, for instance in a template's documentation, then instead use for instance the PNG image or Example-serious.jpg. File link button. The Ogg file is the example inserted when a user clicks the "file link" button in the edit toolbar.
Don't re-upload the image—just edit the image description page and add the licensing information! Also, the wiki software can change the display size of the images, so you do not need to re-upload a smaller version of the same image to use a smaller version in an article. See Wikipedia:Extended image syntax. There, you can learn how to use ...
Original file (855 × 642 pixels, file size: 243 KB, MIME type: image/jpeg) This is a file from the Wikimedia Commons . Information from its description page there is shown below.
The available values for thumbnail size in Preferences (on the Appearance tab) are 120px, 150px, 180px, 200px, 220px (default), 250px, 300px, and 400px. As explained at Wikipedia:Extended image syntax § Size, upright=Factor will "adjust a thumbnail's size to Factor times the default thumbnail size, rounding the result to the nearest multiple of 10".
Wikipedia:Picture of the day is an image which is automatically updated each day with an image from the list of featured pictures. The {{ POTD }} template produces the image shown above. Category:Wikipedia Picture of the day lists the different templates that can be used.
How to upload files to Wikipedia Images and other uploaded files Preparing images for upload Visual file markup How to insert and use pictures in Wikipedia articles Use the Extended image syntax to place an image in an article Sound file markup Graphics tutorials How to request images or media for deletion Category:Wikipedia image help Media ...