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PlantUML Language specification Hyperlink

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Format definition

Simple link

Simple links are define using two square brackets (or three square brackets for field or method on class diagram).

Example:

Link with optional label

It is possible to give an optional label that will be printed instead of the link itself. A space is used as separator after the URL itself.

Example: [[http://plantuml.com This label is printed]]

Link with optional tooltip

Finally you can also have an optional tooltip using round brackets, just after the URL and before the optional label.

Example: [[http://plantuml.com{Optional tooltip} This label is printed]]

Only tooltip

You can also have only a tooltip using round brackets.

Example: [[{A tooltip}]]

Only tooltip and label

You can also have only a tooltip using round brackets, and a label.

Example: [[{A tooltip} This label is printed]]

URL authentication

With URL authentication it is possible to provide an authentication method, credentials, and a proxy config to URL endpoints.

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Links contained curly bracket

A link can contain some curly brackets.

[Ref. QA-13489]

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Links in sequence diagram

The following example lists some links features:

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Links in class diagram

There is a special syntax with 3 square brackets in class definition when you want to define a link on field or method. For example:

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Links in activity diagram

On activity label

On partition

[Ref. QA-542]

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Link in State diagram

You can add link on State diagram:

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Links in Network diagram (nwdiag)

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Links in JSON/YAML diagram

JSON

YAML

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Links in notes

It is also possible to specify a link at the beginning of a note (the link applies to the full note), or inside a note (for a portion of the note).

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Links with explicit URL directive

You can use the url of|for XXX is [[yyy]] syntax:

On sequence diagram

On class diagram

On usecase diagram

On component or deployment diagram

[Ref. Incubation: URL in diagrams]

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Links in arrow (or Hyperlinks in link or connection)

Class diagram

You can use the same syntax as above in the arrow name. It makes an underlined link:

Or you can use this syntax. It doesn't underline the link, though it's still clickable:

Component or Deployment diagram

FIXME
🚩 See Wanted features QA-6397
FIXME

[Ref. QA-6397]

State diagram

FIXME
🚩 Same Issue
FIXME

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Specific SkinParameter for Link

hyperlinkColor

You can change the color value of the links with the hyperlinkColor setting.

[Ref. QA-2322]

hyperlinkUnderline

You can use hyperlinkUnderline to specify the presence and (in PNG only) thickness of hyperlink underlines.

[Ref. QA-2866, QA-15114, GH-1241, GH-1411]

topurl

You can use topurl setting, in order to define the prefix for all the links on a PlantUML diagram, as:

[Ref. QA-9016, QA-13179 ]

Other SkinParameter for Link

You can see also on:

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Using (global) style

Without style (by default)

With style

You can use style to change rendering of elements.

[Ref. QA-8071]