Wikipedia talk:Extended image syntax: Difference between revisions

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I'm confused: If you choose 'thumb', do you have to provide a thumbnail image, or is the "thumbnail" actually just a squeezed-up copy of the normal image, or is the Wiki software somehow generating a thumbnail image on the fly, or what?

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—[[User:Paul A|Paul A]] 02:14, 30 Jan 2004 (UTC)

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:The software generates a sized-down image, so it's not just the big image scaled down by the browser. The image is stored on the web server, so it's generated only once to reduce performance impact. -- [[User:JeLuF|JeLuF]] 10:56, Jan 30, 2004 (UTC)

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== Undocumented: muted and loop options for videos; others? ==

[[File:Mengerzugendlossequenz 2880p60 20200226 color CRF04.webm|thumb|loop|A <code>loop</code> video]]

[[File:Cat piano with audio 3EB0CD1F.webm|thumb|muted|A <code>muted</code> video]]

[https://gerrit.wikimedia.org/r/c/mediawiki/services/parsoid/+/816208/1 A couple of years ago], the <code>loop</code> and <code>muted</code> keywords were added to codebase. Examples to the right.

These are not documented. Which makes me wonder, if there are other important undocumented options...

Should I go ahead and add these to the page?

--[[User:Nanite|Nanite]] ([[User talk:Nanite|talk]]) 17:15, 26 February 2024 (UTC)

:They are documented: [[mediawikiwiki:Extension:TimedMediaHandler#Syntax_synopsis]] —[[User:TheDJ|Th<span style="color: green">e</span>DJ]] ([[User talk:TheDJ|talk]] • [[Special:Contributions/TheDJ|contribs]]) 19:25, 14 April 2024 (UTC)

::{{ping|TheDJ}} ah sorry I missed your reply. I mean to suggest they should be documented on this page. --[[User:Nanite|Nanite]] ([[User talk:Nanite|talk]]) 22:56, 17 March 2025 (UTC)

== How to ''link'' to a specific DjVu/PDF page? ==

The {{para|page}} parameter allows selecting a specific page in a DjVu/PDF file when ''displaying'' an image (example: <code><nowiki>[[File:Alice in Wonderland.djvu|thumb|page=5|Page 5 from ...]]</nowiki></code>). However, this does not work for ''linking'' to a specific page:

* <code><nowiki>[[:File:Alice in Wonderland.djvu|page=5|p.&amp;nbsp;5]]</nowiki></code> gives "[[:File:Alice in Wonderland.djvu|page=5|p.&nbsp;5]]" with a wrong text and a link to the whole file instead of its specific page.

* <code><nowiki>[[:File:Alice in Wonderland.djvu?page=5|p.&amp;nbsp;5]]</nowiki></code> gives "[[:File:Alice in Wonderland.djvu?page=5|p.&nbsp;5]]" with correct text but a wrong link with [[percent-encoding|percent-encoded]] <code>?</code> symbol.

Is there a valid wiki syntax or a helper template to achieve this without using an "external link" (<code><nowiki>[https://en.wikipedia.org/wiki/File:Alice_in_Wonderland.djvu?page=5 p.&amp;nbsp;5]</nowiki></code>)? — [[User:Mikhail Ryazanov|Mikhail Ryazanov]] ([[User talk:Mikhail Ryazanov|talk]]) 21:50, 17 March 2025 (UTC)

: Found the template myself (accidentally): {{tlx|PDF page link|file{{=}}Alice in Wonderland.djvu|page{{=}}5|text{{=}}p.&amp;nbsp;5}} gives "{{PDF page link|file=Alice in Wonderland.djvu|page=5|text=p.&nbsp;5}}". No wiki syntax apparently exists. — [[User:Mikhail Ryazanov|Mikhail Ryazanov]] ([[User talk:Mikhail Ryazanov|talk]]) 02:52, 24 March 2025 (UTC)

== Specifying image dimensions for OpenGraph metadata ==

The article on [[Kat Abughazaleh]] has an image, [[commons:File:Kat_Abughazaleh_2_(portrait_cropped).jpg|a portrait photo of the subject]] that a contributor cropped from [[commons:File:Kat_Abughazaleh_2.jpg|a larger photo]], in the infobox. When social media sites extract metadata from that page via OpenGraph and prefer a landscape-oriented image ([https://bsky.app/profile/spm1961.bsky.social/post/3lolwbe7qbc2m example]), the default dimensions/crop are sometimes pretty suboptimal, displaying the person's nose and mouth but truncating the eyes.

Off the top of my head, I can imagine a few ways of fixing this:

# Include two images on the page; use <code>class=pageimage</code> and <code>class=notpageimage</code> to override the [[mediawikiwiki:Extension:PageImages|Page Images]] selection criteria so that one goes into the social media preview and the other is actually displayed to those who visit the page

# <nowiki>replace the current image with the prior uncropped image, use {{</nowiki>[[Template:CSS image crop|CSS image crop]]<nowiki>}} or {{</nowiki>[[Template:Annotated image|Annotated image]]<nowiki>}} to crop it appropriately for portrait display in the infobox, so that the re-cropping by OpenGraph has more to work with</nowiki>

I welcome advice! [[User:Sumanah|Sumana Harihareswara]] 15:24, 13 May 2025 (UTC)

== Centre a caption? ==

Is there a way to centre align (or centre justify) a caption below an image? [[User:Spideog|Spideog]] ([[User talk:Spideog|talk]]) 14:48, 5 June 2025 (UTC)