In the default skin on desktop (Vector), en.Wikipedia uses only two external link icons; one for PDF documents and the other for all other external links. Some other skins use additional icons. |
This help page is a how-to guide. It explains concepts or processes used by the Wikipedia community. It is not one of Wikipedia's policies or guidelines, and may reflect varying levels of consensus. |
You can test how this page looks in the different skins with these links:
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Linking and page manipulation |
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External links usually display an icon at the end of the link. CSS is used to check for certain filename extensions or URI schemes and apply an icon specific to that file type, based on the selected skin.[1]
This page contains example URLs to demonstrate the link icons. The displayed icon only depends on the URL itself. It is not checked whether a file of that type is actually at the link. The examples here do not link to real files.
Explanation
editMediaWiki software detects URI schemes and/or filename extensions to create a link; thus links without a URI will not have an external link applied. MediaWiki does not attempt to detect any part of the URL to create a link, such as www
, which many websites do not use in the URL.
The standard Wikipedia skin, Vector, shows only PDF icons, as does Cologne Blue. Modern, MonoBook and Timeless show a full set of filename extensions icons and some URI scheme icons; Minerva (mobile) shows none. Icons are defined in the CSS for each skin except for the PDF icon, which is displayed if "pdf" is anywhere in the filename extension.[a]
Filename extension icons are displayed only if the extension matches the text. Filename extension icons have precedence over URI scheme icons. Internet Explorer may show an empty space or misplaced icon if the page is rendered with a line wrap inside the link text. Link icons do not adhere to accessibility standards, since alt text cannot be added.
Example
editHiding link icons
editA link icon can be hidden with the plainlinks
class or {{Plain link}}, but this is not advisable.
<span class="plainlinks">http://example.org/test.pdf</span>
Custom link icons
editCustom icons can be added by editing Special:MyPage/skin.css (current skin only) or Special:MyPage/common.css (all skins). For example, to add an icon for Excel files:
#content a[href$=".xls"].external,
#content a[href$=".XLS"].external,
#content a[href$=".xlsx"].external,
#content a[href$=".XLSX"].external {
background: url("http://up.wiki.x.io/wikipedia/commons/b/ba/Page_white_excel.png") center right no-repeat; padding-right: 18px;
}
When successfully updated, this link will show an Excel icon:
The markup detects file extensions .xls or .xlsx with both upper and lower case. The image must be 16 pixels wide. The image link must be from http://up.wiki.x.io. To get this link, go to the file page and click on the image to open it without the file description, then copy the URL.
To remove a default icon, simply add the CSS with no URL. For example, to remove the padlock icon when viewing secure links:
#content a[href ^="https://"].external {
background: center right no-repeat;
padding-right: 18px;
}
To remove all the default icons, use this CSS:
#content a.external {
background: none !important;
padding: 0 !important;
}
Bugs
edit- bug 20024 - a destination-dependent icon should be shown for interwiki links
bug 30682 - Link icon inconsistencies when using protocol relative URLs- bug 45891 - External link icons should have alt text
bug 54604 - Large number of CSS rules for external linksbugzilla:61178- Remove yellow padlock icons on HTTPS links (related discussion for Enwiki)bugzilla:63521- Default external link icons should be a module
See also
editNotes
edit- ^ The default PDF icon is a generic document icon, but is changed to through Common.css.