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There are 4 basic choices for image file formats : SVG for simple diagrams (especially those that need to be scaled). 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.
- Size and Scaling
- Png
- Jpeg
- Gif
- Tiff
- Webp
- Xcf
- Mp3
- Ogg
- FLAC
See also: Commons:Maximum file size 1. Note that new PNG resizing software has been installed since the text below has been written. Unfortunately the image scaling system is still limited. Currently, (PNG, GIF, JPEG) thumbnails are generated in the same format as the original image and are always in 24-bit color (unless the image is GIF, in which ...
PNG is a "lossless" format (which supports alpha transparency), meaning that the exact pixel color is preserved when saving, and can be used for any kind of drawings/diagrams that is not available in SVG format (SVG is preferred when creating diagrams etc.). PNG is good for practically anything except digital camera photographs. PNG is better for s...
JPEG (also JPG) is appropriate for photographs, especially when the photographs are already JPEGs. JPEG uses “lossy compression”, sacrificing precision for smaller file size. If you have a choice of file formats in which to save a graphic, scan, or other such thing, save it as PNG(or save it as another lossless format, such as TIFF, and convert to ...
PNG is almost always superior to GIF for still images (smaller size, more colors, better transparency). If you are creating or editing a graphic (not a photograph), and have a choice of file formats to save it in, the preferences for Wikipedia/Wikimedia use is SVGfirst, then PNG. Never save an image with more than 256 colors in the GIF format. GIF ...
Only some TIFFfiles can, at this time, be displayed in resized (thumbnailed) form within Wikipedia or on Commons, and TIFF files are not supported by most Internet browsers. They are an archival format, and should never be used for images intended to be displayed. TIFF generally serves as a lossless format, similar to PNG, but with much less compre...
The image format WebPis supported on Commons. It supports both lossy image compression based on VP8 and lossless image compression based on a new algorithm. The lossless mode is more compact than PNG.
XCF can be useful if you are working on an image with GIMP. Unlike PNG and similar files, XCF files support text and multiple layers. It may be useful to upload the XCF file, so that other editors can continue working with it directly, while retaining the layering information. Please note that a thumbnail of a XCF can only be generated by the Media...
MP3 is a widely supported audio format and is highly recommended if an ogg or lossless version can't be found. Commons currently only accepts MP3 uploads by users with Autopatrolor higher rights, due to concerns about the capacity of the community to monitor for copyright violations.
Opus is the preferred audio codec for the Ogg container. Please use the file type opus or oga to upload audio files in Ogg Opus format.[Note 4] Opus is supported by MediaWiki (phab:T42193, phab:T53313) since 2014. The format has excellent quality and low algorithmic delay.It automatically switches between speech and music-optimized modes and is abl...
The Free Lossless Audio Codec is supported with or without encapsulation into ogg-containers. TimedMediaHandler will automatically offer transcoded variants in ogg format. File extension without encapsulation: .flac. (The related phab:T51505was resolved in 2013 and closed in 2014.)
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Creation and usage of media files. Images, audio and video files must be uploaded into Wikipedia using the "Upload file" link on the left-hand navigation bar. Only logged in users can upload files. Once a file is uploaded, other pages can include or link to the file. Uploaded files are given the "File:" prefix by the system, and each one has an ...
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Dec 23, 2023 · This page was last edited on 23 December 2023, at 17:44. Files are available under licenses specified on their description page. All structured data from the file namespace is available under the Creative Commons CC0 License; all unstructured text is available under the Creative Commons Attribution-ShareAlike License; additional terms may apply.
Sep 9, 2021 · Therefore, today, the Wikimedia Research team is releasing its first large image dataset. It contains more than six million image files from Wikipedia articles in 100+ languages, which correspond to almost 1 all captioned images in the WIT dataset. Image files are provided at a 300-px resolution, a size that is suitable for most of the learning ...
Jul 9, 2023 · This is a very powerful command-line program to edit image metadata. If you're using a computer running the Windows operating system, there is also a graphical user interface to that tool called ExiftoolGUI . If the file you tried to upload is from Flickr, you can view (but not edit) the metadata on Flickr.
