Help:Images

This page explains the image syntax when editing the wiki. You or another user must usually upload an image before you can use it on a page.

Images that are stored on a MediaWiki server are usually rendered by using the File: namespace prefix. The alternate Media: namespace prefix is also usable to reference the original media file content (for rendering or downloading it separately, out of any MediaWiki page).

Supported types for images

The following file formats are supported by default:

• .jpg or .jpeg, .png, .gif

Rendering a single image

Syntax

The full syntax for displaying an image is:

[[File:filename.extension|options|caption]]

where options can be zero or more of the following, separated by pipes (|):

• Format option: one of border and/or frameless, frame, thumb (or thumbnail);

  Controls how the rendered image is formatted and embedded in the rest of the page.

• Resizing option: one of
  • {width}px — Resizes the image to fit within the given maximum width in pixels, without restricting its height;
  • x{height}px — Resizes the image to fit within the given maximum height in pixels, without restricting its width;
  • {width}x{height}px — Resizes the image to fit within the given width and height in pixels;
  • upright — Resizes an image to fit within reasonable dimensions, according to user preferences (suitable for images whose height is larger than width).

  Note that the image will always retain its aspect ratio, and can only be reduced (not increased) in size unless it's in a scalable media type (bitmap images cannot be scaled up).

  The default maximum size depends on the format and the internal image dimensions (according to its media type).

• Horizontal alignment option: one of left, right, center, none;

  Controls the horizontal alignment (and inline/block or floating styles) of the image within a text (no default value).

• Vertical alignment option: one of baseline, sub, super, top, text-top, middle, bottom, text-bottom;

  Controls the vertical alignment of a non-floating inline image with the text before or after the image, and in the same block (the default vertical alignment is middle).

• Link option: one of
  • link={target} — Allows to change the target (to an arbitrary page title, or URL) of the generated link, activable on the rendered image surface; e.g. [[File:Example.jpg|20px|link=http://www.wikipedia.org]] renders as (external link), or [[File:Example.jpg|20px|link=MediaWiki]] renders as (internal link).
  • link= (with an empty value) — (MediaWiki 1.14+) Displays an image without any activable link; e.g. [[File:Example.jpg|20px|link=]] renders as .

! Link does not work with thumb, thumbnail or frame.

• Other specific options:
  • alt={alternative text} — (MediaWiki 1.14+) Defines the alternative text (maps to the HTML attribute alt="..." of the generated <image /> element) of an image that will be rendered if either the referenced image cannot be downloaded and embedded, or if the support media must use the alternative description text (e.g. when using a Braille reader or with accessibility options set by the user in its browser).
  • page={number} — Renders the specified page number (currently only applicable when showing a .djvu or .pdf file).

The options can be given in any order. If the given options conflict each other, the latter is applied, except for the format options, where the options take the priority in the order of: frame; thumb (or thumbnail); frameless and/or border.

If a parameter does not match any of the other possibilities, it is assumed to be the caption text. Caption text shows below the image in thumb and frame formats, or as mouseover text in border, frameless formats or when the format is omitted. Caption text displayed in the thumb and frame formats may contain wiki links and other formatting. In the other options, wiki-formatting will not work though transclusion will.

If no caption text is supplied, a caption is automatically created showing the file name. To completely remove the caption, set it to <span title=""></span>. For example, [[File:Example.jpg|20px|<span title=""></span>]] renders as .

Stopping the text flow

On occasion it is desirable to stop text (or other inline non-floating images) from flowing around a floating image. Depending on the web browser's screen resolution and such, text flow on the right side of an image may cause a section header (for instance, == My Header ==) to appear to the right of the image, instead of below it, as a user may expect. The text flow can be stopped by placing <br style="clear: both" /> before the text that should start below the floating image.

All images rendered as blocks (including non-floating centered images, left- or right-floating images, as well as framed or thumbnailed floating images) are implicitly breaking the surrounding lines of text (terminating the current block of text before the image, and creating a new paragraph for the text after them). They will then stack vertically along their left or right alignment margin (or along the center line between these margins for centered images).

Altering the default link target

The following table shows how to alter the link target (whose default is the image description page) or how to remove it. Changing the link does not alter the format described in the previous sections.

Description	You type	You get

Warning :

The licencing requirements on your wiki may not allow you to remove all links to the description page that displays the required authors attributions, the copyrights statements, the applicable licencing terms, or a more complete description of the rendered image (including its history of modifications).

If you change or remove the target link of an image, you will then have to provide somewhere else on your page an explicit link to this description page, or to display the copyright and author statement and a link to the applicable licence, if they are different from the elements applicable to the embedding page itself.

Your wiki policy may restrict the use of the alternate link parameter, or may even enforce a prohibition of alternate link parameters for embedded media files (in which case, the link parameter will be ignored), or may only accept them after validation by authorized users or administrators.

Linking to an image without displaying it

Link to description page

If you put a colon (:) before File:, the image will not be embedded and the link will lead to the description page of the file.

[[:File:MediaWiki:Image sample]]
[[:File:MediaWiki:Image sample|Sunflowers]]

results in

[[:File:MediaWiki:Image sample]] [[:File:MediaWiki:Image sample|Sunflowers]]

Link to another page

Note: link does not work with thumb or frame.

This will make a 50px width picture with a link to the page MediaWiki:

[[File:Wiki.png|50px|link=MediaWiki]]

Link directly to the media file

You can use the pseudo-namespace “Media” to link directly to a file without rendering it, bypassing the description page.

[[Media:MediaWiki:Image sample]]
[[Media:MediaWiki:Image sample|Sunflowers]]

results in

[[Media:MediaWiki:Image sample]] [[Media:MediaWiki:Image sample|Sunflowers]]

The same result can be achieved by adding a colon before the namespace (works with categories too):

[[:File:MediaWiki:Image sample]]

You can also use: 

[[Special:FilePath/MediaWiki:Image sample]]

which can be used to link to a potential file, even if it doesn't exist. You can also use:

{{FILEPATH:MediaWiki:Image sample}}

which generates an external URL to the file inline:

Files at other websites

You can link to an external file available online using the same syntax used for linking to an external web page. With these syntaxes, the image will not be rendered, but only the text of the link to this image will be displayed.

[http://url.for/some/image.png]

Or with a different displayed text:

[http://url.for/some/image.png link text here]

Additional MediaWiki markup or HTML/CSS formatting (for inline elements) is permitted in this displayed text (with the exception of embedded links that would break the surrounding link):

[http://www.example.com/some/image.png Example '''<del>rich</del>''' ''<ins>link text</ins>'' here.]

which renders as: Example rich link text here.

If it is enabled on your wiki (see Manual:$wgAllowExternalImages), you can also embed external images. To do that, simply insert the image's url:

http://url.for/some/image.png

Currently, embedded images cannot be resized, but they may be formatted by surrounding MediaWiki markup or HTML/CSS code.

If this wiki option is not enabled, the image will not be embedded but rendered as a textual link to the external site, just like above.