Help:Images

From Unofficial BOINC Wiki

Images (drawings, photos, etc) can be a helpful addition to any article. Here are some important tips about uploading and using images:

Contents 1 Uploading image files 2 Syntax 3 Format 4 Alignment 4.1 Vertical alignment 5 Size and Frame 6 Gallery of images 6.1 Parameters 7 Links 7.1 Link to description page 7.2 Link directly to file 8 Requisites 9 Files at other websites

[edit] Uploading image files

• Please only add images to the glossary which we are legally free to use. The copyright to most photographs and drawings is owned by the author or creator, and we cannot use them unless we have permission, or unless we have a clear indication that they are free to use.
• If you want to copy an image from Wikipedia or another wiki, such as Wikimedia Commons, first click on the image to visit the page which describes it and check the Permissions. Wikimedia Commons is a great source for images because they are all free for us to use.
• To add an image to this wiki you must first have it on your computer (eg. right click to "Save image As..."). Then go to page Special:Upload, which you will find listed as Upload file or image in the toolbox area at the left of every glossary page. Follow the dialogue there for uploading the file. Please enter as much information as you can, including the provenance of the file (where you got it) and why you belive we are free to use it.
• For any image which you create yourself and upload we will assume that we have your permission to use the image, but in the summary comments created when you upload the image could you please also indicate the name of the creator (you) and state that we have permission to use it when you upload it, just to make that all explicit. To make this easy you can use the template syntax "{{PD-self}}" in the comments.

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.

[edit] Syntax

The full syntax for displaying an image is:

[[File:{filename}|{options}]]

Where options can be zero or more of the following, separated by pipes:

• border, frame, thumb, or frameless: Controls how the image is formatted
• left, right, center, none: Controls the alignment of the image within a text
• baseline, sub, super, top, text-top, middle, bottom, text-bottom: Controls the vertical alignment of the image within a text
• {width}px: Resizes the image to the given width in pixels
• {width}x{height}px: Resizes the image to fit within the given width and height in pixels; it is possible to specify only the height by writing x{height}px
  • Note that the image will always retain its aspect ratio.
• link={destination}: Allows to link to an arbitrary title, URL or just nowhere (1.14+)
  • link=: Will display an image without link, e.g. [[File:Name.jpg|link=]].
  • Note that link cannot be used in conjunction with thumb or frame.
• alt={alternative text}: For changing the alternative text (alt="") of an image (1.14+)
• Special cases:
  • page=1: Displays the specified page when showing a djvu 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, and frameless and/or border. If a given option does not match any of the other possibilities, it is assumed to be the caption text. Caption text can contain wiki links or other formatting.

[edit] Format

The following table shows the effect of all available formats.

Description	You type	You get
no format specified	... text text text [[File:Example.jpg|caption]] text text text ...	text text text text text text text text text text text text text text text text text text text text text text text text text text text text text text text text text text text text text text text text text text text text text text
border results in a very small gray border	... text text text [[File:Example.jpg|border|caption]] text text text ...	text text text text text text text text text text text text text text text text text text text text text text text text text text text text text text text text text text text text text text text text text text text text text text
frame	... text text text [[File:Example.jpg|frame|caption]] text text text ...	text text text text text text text text text text text text text text text text text text text text text text text caption text text text text text text text text text text text text text text text text text text text text text text text
thumb	... text text text [[File:Example.jpg|thumb|caption]] text text text ...	text text text text text text text text text text text text text text text text text text text text text text text caption text text text text text text text text text text text text text text text text text text text text text text text
frameless, like thumbnail, respect user preferences for image width but without border and no right float	... text text text [[File:Example.jpg|frameless|caption]] text text text ...	text text text text text text text text text text text text text text text text text text text text text text text text text text text text text text text text text text text text text text text text text text text text text text
frameless and border	... text text text [[File:Example.jpg|frameless|border|caption]] text text text ...	text text text text text text text text text text text text text text text text text text text text text text text text text text text text text text text text text text text text text text text text text text text text text text
external link	... text text text [[File:Example.jpg|link=http://wikipedia.org|caption]] text text text ...	text text text text text text text text text text text text text text text text text text text text text text text text text text text text text text text text text text text text text text text text text text text text text text
no link (external or file page)	... text text text [[File:Example.jpg|link=|caption]] text text text ...	text text text text text text text text text text text text text text text text text text text text text text text text text text text text text text text text text text text text text text text text text text text text text text

When the height of an image in thumbnail is bigger than its width and you find it too outstanding, you may try the option upright, which will try to adjust its size to more desirable size.

Note that by writing thumb={filename}, you can use a different image for the thumbnail.

[edit] Alignment

Note that when using frame or thumb, the default alignment will be right.

Description	You type	You get
no alignment specified, or default alignment	... text text text [[File:Example.jpg|caption]] text text text ...	text text text text text text text text text text text text text text text text text text text text text text text text text text text text text text text text text text text text text text text text text text text text text text
specify alignment as none	... text text text [[File:Example.jpg|none|caption]] text text text ...	text text text text text text text text text text text text text text text text text text text text text text text text text text text text text text text text text text text text text text text text text text text text text text
center	... text text text [[File:Example.jpg|center|caption]] text text text ...	text text text text text text text text text text text text text text text text text text text text text text text text text text text text text text text text text text text text text text text text text text text text text text
left	... text text text [[File:Example.jpg|left|caption]] text text text ...	text text text text text text text text text text text text text text text text text text text text text text text text text text text text text text text text text text text text text text text text text text text text text text
right	... text text text [[File:Example.jpg|right|caption]] text text text ...	text text text text text text text text text text text text text text text text text text text text text text text text text text text text text text text text text text text text text text text text text text text text text text

[edit] Vertical alignment

text text [[File:Example.jpg|20px]]
text text [[File:Example.jpg|20px|baseline]]
text text [[File:Example.jpg|20px|sub]]
text text [[File:Example.jpg|20px|super]]
text text [[File:Example.jpg|20px|text-top]]
text text [[File:Example.jpg|20px|middle]]
text text [[File:Example.jpg|20px|bottom]]
text text [[File:Example.jpg|20px|text-bottom]]

results in (the text is underlined to show the result more clearly)

text text text text text text text text text text text text text text text text

[edit] Size and Frame

Among different formats, the effect of the size parameter may be different, as shown below.

• When the format is not specified, or only bordered, the size can be both reduced and enlarged.
• A image with frame always ignores the size specification.
• The size of an image with thumb and frameless can be reduced, but can not be enlarged beyond the original size of the image.

For how it appears when its size is not specified, see Format section above.

Format	Reduced	Enlarged
(not specified)	[[File:Example.jpg|50px]]	[[File:Example.jpg|500px]]
border	[[File:Example.jpg|border|50px]]	[[File:Example.jpg|border|500px]]
frame	[[File:Example.jpg|frame|50px]]	[[File:Example.jpg|frame|500px]]
thumb	[[File:Example.jpg|thumb|50px]]	[[File:Example.jpg|thumb|500px]]
frameless	[[File:Example.jpg|frameless|50px]]	[[File:Example.jpg|frameless|500px]]

[edit] Gallery of images

It's easy to make a gallery of thumbnails only, not other images, with the <gallery> tag. The syntax is:

<gallery>
File:{filename}|{caption}
File:{filename}|{caption}
{...}
</gallery>

Note that the image code is not enclosed in brackets when enclosed in gallery tags.

Captions are optional, and may contain wiki links or other formatting.

for example:

<gallery>
File:Example.jpg|Item 1
File:Example.jpg|a link to [[Help:Contents]]
File:Example.jpg
File:Example.jpg
File:Example.jpg| ''italic caption''
File:Example.jpg|on page "{{PAGENAME}}"
</gallery>

is formatted as:

Item 1	a link to Help:Contents
italic caption	on page "Images"

[edit] Parameters

The gallery tag itself takes several additional parameters:

<gallery {parameters}>
{images}
</gallery>

• caption={caption}: sets a caption on the gallery.
• widths={width}px: sets the widths of the images.
• heights={heights}px: sets the (max) heights of the images.
• perrow={integer}: sets the number of images per row.

[edit] Links

[edit] 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:Example.jpg]]
[[:File:Example.jpg|Sunflowers]]

results in

File:Example.jpg Sunflowers

[edit] Link directly to file

You can use the pseudo-namespace “Media” to link directly to a file, bypassing the description page.

[[Media:Example.jpg]]
[[Media:Example.jpg|Sunflowers]]

results in

Media:Example.jpg Sunflowers

You can also use: 

[[Special:FilePath/Example.jpg]]

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

{{FILEPATH:Example.jpg}}

which generates an external URL to the file inline:

[edit] Requisites

Before using images in your page, the system administrator of your wiki must have enabled file uploads and a user has to upload the file. System administrators may also set the wiki to accept files from foreign repositories, such as the Wikimedia Commons.

[edit] 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.

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

Or with different text:

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