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一般的なサムネイルサイズ

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This page is a translated version of the page Common thumbnail sizes and the translation is 80% complete.
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MediaWiki ではサムネイルを無期限に保存しているため、様々なサイズのサムネイルを使用すると、こうしたサムネイルによって大量のストレージが占有されてしまう可能性があります。 このページは、共通のサイズを使用するように調整するためのヒントを掲載しています（最初のステップとして、既存の使用パターンを記載します）。 特に記載がない限り、サイズはピクセル単位の幅を意味します。

これは、視覚的なサイズではなく、ソースコード側から要求されたサムネイルサイズに関するものであるということにご注意ください。

Current standard sizes in Wikimedia production: 20px, 40px, 60px, 120px, 250px, 330px, 500px, 960px, 1280px, 1920px, 3840px

関連する構成設定

名前 説明 既定 ウィキメディア
$wgThumbnailSteps Image widths used as steps for thumbnail sizes. The thumbnail with smallest step that has larger value than requested will be shown but it will be downsized via HTML values. It increases the bandwidth to the users by serving slightly large thumbnail sizes they have requested but it will save resources by de-duplicating thumbnail generation and storage. なし 20, 40, 60, 120, 250, 330, 500, 960, 1280, 1920, 3840[1]
$wgUploadThumbnailRenderMap Sizes pre-rendered on upload. なし なし
$wgThumbLimits In-article thumbnail sizes available as user preference. 120, 150, 180, 200, 250, 300 120, 150, 180, 200, 220, 250, 300, 400
$wgDefaultUserOptions['thumbsize'] Thumbnail size used in articles when the size is not specified in the wikitext and the user has not set their preference. 5 (300px) 5 (250px) (4 220px until 2025 T355914)
$wgDefaultUserOptions['imagesize'] Image size used on file description pages when the user has not set their preference. 2 (800x600) same
$wgResponsiveImages Whether to provide alternative image sizes for high-DPI displays. When enabled, article thumbnails, galleries, and images on file pages will have an srcset with 1.5x and 2x of the original size. true same
$wgThumbUpright Scaling factor applied to the $wgThumbLimits value for thumbnails where the upright wikitext option is used. 0.75 (225px) 0.75 (165px)
$wgGalleryOptions Image sizes in galleries (when not overriden in the <gallery> tag). For traditional galleries, the imageWidth and imageHeight options are used as a bounding box to determine physical thumbnail size; for mode="packed" galleries, width is ignored and imageHeight * 1.5 is used. 120x120 120x120
$wgImageLimits File description page image sizes available as user preference; also used for the list of download links under the image. Values are bounding boxes. 320x240, 640x480, 800x600, 1024x768, 1280x1024, 2560x2048 same
$wgThumbnailBuckets Intermediary thumbnail sizes to use to speed up thumbnail rendering (automatically generated when the image is first thumbnailed). none 1920 (not sure Thumbor uses it though)

応用

  • Thumbnails in articles: per above, usually 300px + 450px + 600px with MediaWiki default settings and 220px + 330px + 440px on Wikimedia sites. (See T51357 about increasing it.) For upright images, 225px + 338px + 450px by default, 165px + 248px + 330px on Wikimedia sites. Common manually specified Wikipedia image sizes: 20px or 40px for icons, 23x15px for flags.
  • Galleries: On Wikimedia sites, 120px for traditional galleries. Can be anything for packed galleries as they are height-constrained.
  • Images on file description pages: 800px + 1200px + 1600px (or it could be anything if the image has smaller than 4:3 aspect ratio).
  • Images in the file history of description pages: 120x120px (whichever side is bigger)
  • Images in Galleries of Special:NewFiles, Special:Search etc, 120x120px (whichever side is bigger)
  • Image download links: 320px, 640px, 800px, 1024px, 1280px, 2560px (for most images, depending on aspect ratio, as above)
  • Codex thumbnail component: 40px
  • MediaViewer : $wgMediaViewerThumbnailBucketSizes set of width buckets: 320, 800, 1024, 1280, 1920, 2560, 2880
  • Page previews : 320px or 640px (depending on the resolution)
  • Search dropdowns:
  • VisualEditor :
    • Link preview (ve.init.mw.LinkCache): 80px
  • Wikibase : standard MediaWiki thumbnail sizes (?)
  • GrowthExperiments :
    • Impact module article icons: 40px, to match Codex thumbnail component size
    • Task cards: 260px on mobile, 332px on desktop (?)
    • Link recommendation dialog: uses ve.init.mw.LinkCache
    • Image recommendation thumbnail: uses MediaWiki thumb size on desktop, screen width capped to 500px on mobile
    • Image recommendation dialog: 120px or 160px depending on screen size
    • Image recommendation dialog, fullscreen image preview: screen size
    • Image recommendation save dialog: 226px on desktop, screen size on mobile
  • Toolhub: 40/60/80px, 50/75/100px, 100/150/200px (depending on viewport resolution)
  • To do: MobileFrontend search, mobile thumbnails (MobilePage::SMALL_IMAGE_WIDTH/TINY_IMAGE_WIDTH?), mobile image viewer, Special:Search snippets, Special:MediaSearch, probably a bunch of VisualEditor things, MediaViewer download/embed links, mobile apps; FullSearchResultWidget::THUMBNAIL_SIZE, SearchResultThumbnailProvider::THUMBNAIL_SIZE; see if any of these support srcset

よくある質問

Q: Help, my application got a "429 Use thumbnail steps listed on https://w.wiki/GHai" message!

Make sure you're using one of the "standard" sizes referenced in $wgThumbnailSteps above. Alternatively use the imageinfo api instead of directly constructing the image's url.

関連項目

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