Help:Navigational image
Although not a 'feature' of the MediaWiki software, an image can be made to link to a specified page if desired.
Some people find trawling through this page understandably confusing, so here is the short version:
- You can use the re-direct feature on an image page, but when used, the target page shows all sorts of unwanted information that gets transcluded from the image page itself.
- For MediaWiki sites that support the embedding of external_images (which is basically all MediaWiki websites except the Wikipedia and Meta) you can use the 'clickpic' template. See that link for information on how to use it.
- For website such as Wikipedia that preclude the use of embedding external images you can use superimpose hyperlinks onto images.
For more detailed explanations, see the rest of the article below.
Method 1: Employing image redirects
One way to do this is by putting a redirect on the image page. For example, on Meta the internal image File:Catapult.jpg links to the page Help:Redirect. The image 60px from Commons, redirecting on Meta to the Main Page, is not displayed.
If the redirect is within the same project, then a redirect message with a link to the image page (MediaWiki:Redirectedfrom) is inserted on the target page.
To use the same image on another page without a redirect or with a different target, a copy of the image has to be uploaded under another name. However, an image on Commons may have its own image page on each project, e.g. File:Zuid Holland-Position.png, which could have a redirect on the image page on this project, which would then be accessible by the link http://www.lensovet.net/~sysadmin/w/index.php?title=File:Zuid_Holland-Position.png&redirect=no.
Method 2: Using the external link format
In projects that allow the embedding of external_images (in which case you see images in the lefthand column of the table below) there are the following possibilities:
(The image can be an internally or externally held image, and the target can be an external URL or a wiki page).
| What it looks like | What you type |
|---|---|
| An external image linking to an external page, image, etc.: |
[http://www.google.com http://www.google.com/images/logo.gif] |
|
An external image linking to an internal page: |
[[Help:Redirect|http://www.google.com/images/logo.gif]] |
|
An external image linking to an internal page with external link style, with : |
[{{SERVER}}{{localurl:Help:Redirect}} http://www.google.com/images/logo.gif]
|
|
An internal image linking to an internal page with external link style: |
[{{SERVER}}{{localurl:Help:Redirect}} http:../upload/b/bc/Wiki.png]
[[:Image:wiki.png]]
|
|
If you don't want the small icon indicating it is an external link to appear, because it is actually an internal link (and looks untidy), you can surround the image link with code to supress it. This will be most useful to people running their own corporate or independent wikis, rather than Wikimedia sites. |
<span class="plainlinks">[{{SERVER}}{{localurl:Help:Redirect}} http:../upload/b/bc/Wiki.png]</span>
|
|
To make it easy to create navigational images based on the above method, a template can be employed. In this example a template called 'clickpic' is created that takes two parameters: target page name and image path. ('clickpic' template not to be confused with 'click' template mentioned in Method 3). For more info on using this template, see User:CharlesC/Template for navigational images on Mediawiki websites. Now you can easily have proper internal linking with images in MediaWiki sites - hooray! |
<span class="plainlinks">[{{SERVER}}{{localurl:{{{1}}}}} {{{2}}}]</span>
{{clickpic|Main Page|http:../upload/b/bc/Wiki.png}}
|
Thumbnail
One application is linking a small version of an image to a large one. Example where both are external:
[http://pennine.demon.co.uk/photos/seakayak/xga/Lunga-P7-100-3086.jpg http://pennine.demon.co.uk/photos/seakayak/small/Lunga-P7-100-3086.jpg]
gives
http://pennine.demon.co.uk/photos/seakayak/small/Lunga-P7-100-3086.jpg
The alternate text is the name of the image, after the last slash in the URL. If you have control over the image, give it a meaningful name; you could even include a text like "click to enlarge" in the name.
Method 3: Superimposing a linked text onto an image
A linked text can be superimposed onto an image, see Help:Composite images. In particular there can be a dummy text such as an character in a very large font, covering the whole image.
Using template:navimg ( talk edit history links ):
top{{navimg|xsize=50|ysize=50|image=Wikimedia-logo.svg|link=MediaWiki}}bottom gives:
However, if the browser is set to ignore font sizes specified in web pages then only part of the area in the image links to the specified page, and the rest of the image to the image page. Check the hoverbox or status line to see the target at any position of the mouse cursor. Some versions of the template have the same hoverbox for the two areas.
The image cannot be inline. Positioning can be done e.g. with a table.
See also:
See also
- Navigational maps
- Help:Composite images - Allows superimposing a linked text onto an image.
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