---
title: PlantUML
icon: arcticons:uml-class-editor
createTime: 2025/10/08 15:02:08
permalink: /en/guide/chart/plantuml/
---

## Overview

The theme supports embedding [PlantUML](https://plantuml.com/) diagrams within articles.

This feature is powered by [@vuepress/plugin-markdown-chart](https://ecosystem.vuejs.press/plugins/markdown/markdown-chart/).

## Configuration

This feature is disabled by default in the theme.

Enable the feature in the `.vuepress/config.ts` configuration file:

```ts title=".vuepress/config.ts"
export default defineUserConfig({
  theme: plumeTheme({
    markdown: {
      plantuml: true, // [!code ++]
    },
  })
})
```

::: note
The following documentation is forked from [@vuepress/plugin-markdown-chart](https://ecosystem.vuejs.press/plugins/markdown/markdown-chart/plantuml.html),
licensed under [MIT](https://github.com/vuepress/ecosystem/blob/main/LICENSE).
:::

## Format

You can insert the same content supported by [plantuml](https://plantuml.com/), for example:

```md
@startuml
content
@enduml
```

## Examples

::: demo markdown title="Sequence Diagram"

```md
@startuml
Alice -> Bob: Authentication Request

alt successful case

    Bob -> Alice: Authentication Accepted

else some failure case

    Bob -> Alice: Authentication Failed
    group My own label
    Alice -> Log : Log attack start
        loop 1000 times
            Alice -> Bob: DNS Attack
        end
    Alice -> Log : Log attack end
    end

else Another failure

   Bob -> Alice: Please repeat

end
@enduml
```

:::

::: demo markdown title="Use Case Diagram"

```md
@startuml
:Main Admin: as Admin
(Use the application) as (Use)

User -> (Start)
User --> (Use)

Admin ---> (Use)

note right of Admin : This is an example.

note right of (Use)
A note can also
be on several lines
end note

note "This note is connected\nto several objects." as N2
(Start) .. N2
N2 .. (Use)
@enduml
```

:::

::: demo markdown title="Class Diagram"

```md
@startuml
abstract class AbstractList
abstract AbstractCollection
interface List
interface Collection

List <|-- AbstractList
Collection <|-- AbstractCollection

Collection <|- List
AbstractCollection <|- AbstractList
AbstractList <|-- ArrayList

class ArrayList {
  Object[] elementData
  size()
}

enum TimeUnit {
  DAYS
  HOURS
  MINUTES
}

annotation SuppressWarnings

annotation Annotation {
  annotation with members
  String foo()
  String bar()
}
@enduml
```

:::

::: demo markdown title="Activity Diagram"

```md
@startuml

start
:ClickServlet.handleRequest();
:new page;
if (Page.onSecurityCheck) then (true)
  :Page.onInit();
  if (isForward?) then (no)
    :Process controls;
    if (continue processing?) then (no)
      stop
    endif

    if (isPost?) then (yes)
      :Page.onPost();
    else (no)
      :Page.onGet();
    endif
    :Page.onRender();
  endif
else (false)
endif

if (do redirect?) then (yes)
  :redirect process;
else
  if (do forward?) then (yes)
    :Forward request;
  else (no)
    :Render page template;
  endif
endif

stop

@enduml
```

:::

::: demo markdown title="Component Diagram"

```md
@startuml
package "Some Group" {
  HTTP - [First Component]
  [Another Component]
}

node "Other Groups" {
  FTP - [Second Component]
  [First Component] --> FTP
}

cloud {
  [Example 1]
}

database "MySql" {
  folder "This is my folder" {
    [Folder 3]
  }
  frame "Foo" {
    [Frame 4]
  }
}

[Another Component] --> [Example 1]
[Example 1] --> [Folder 3]
[Folder 3] --> [Frame 4]

@enduml
```

:::

::: demo markdown title="State Diagram"

``` md
@startuml
state start1  <<start>>
state choice1 <<choice>>
state fork1   <<fork>>
state join2   <<join>>
state end3    <<end>>

[*]     --> choice1 : from start\nto choice
start1  --> choice1 : from start stereo\nto choice

choice1 --> fork1   : from choice\nto fork
choice1 --> join2   : from choice\nto join
choice1 --> end3    : from choice\nto end stereo

fork1   ---> State1 : from fork\nto state
fork1   --> State2  : from fork\nto state

State2  --> join2   : from state\nto join
State1  --> [*]     : from state\nto end

join2   --> [*]     : from join\nto end
@enduml
```

:::

::: demo markdown title="Object Diagram"

```md
@startuml
object London
object Washington
object Berlin
object NewYork

map CapitalCity {
 UK *-> London
 USA*--> Washington
 Germany *---> Berlin
}

NewYork --> CapitalCity::USA
@enduml
```

:::

::: demo markdown title="Deployment Diagram"

```md
@startuml

node node1
node node2
node node3
node node4
node node5
node1 -- node2 : label1
node1 .. node3 : label2
node1 ~~ node4 : label3
node1 == node5

@enduml
```

:::

::: demo markdown title="Timing Diagram"

```md
@startuml
scale 5 as 150 pixels

clock clk with period 1
binary "Enable" as en
binary "Read/Write" as rw
binary "Data Valid" as dv
concise "Data Bus" as db
concise "Address Bus" as addr

@6 as :write_beg
@10 as :write_end

@15 as :read_beg
@19 as :read_end

@0
en is low
db is "0x0"
addr is "0x03f"
rw is low
dv is 0

@:write_beg-3
 en is high
@:write_beg-2
 db is "0xDEADBEEF"
@:write_beg-1
dv is 1
@:write_beg
rw is high

@:write_end
rw is low
dv is low
@:write_end+1
rw is low
db is "0x0"
addr is "0x23"

@12
dv is high
@13
db is "0xFFFF"

@20
en is low
dv is low
@21
db is "0x0"

highlight :write_beg to :write_end #Gold:Write
highlight :read_beg to :read_end #lightBlue:Read

db@:write_beg-1 <-> @:write_end : Setup Time
db@:write_beg-1 -> addr@:write_end+1 : Hold
@enduml
```

:::

::: demo markdown title="Regex Diagram"

```md
@startregex
/<style(\s*lang=(['"])(.*?)\2)?\s*(?:scoped)?>([\s\S]+)<\/style>
@endregex
```

:::

::: demo markdown title="Network Diagram"

```md
@startuml
nwdiag {
  network dmz {
      address = "210.x.x.x/24"

      web01 [address = "210.x.x.1"];
      web02 [address = "210.x.x.2"];
  }
  network internal {
      address = "172.x.x.x/24";

      web01 [address = "172.x.x.1"];
      web02 [address = "172.x.x.2"];
      db01;
      db02;
  }
}
@enduml
```

:::

::: demo markdown title="Salt (GUI) Diagram"

```md
@startsalt
{+
{/ <b>General | Full Screen | Behavior | Saving }
{
{ Image opening mode: | ^Smart Mode^ }
[X] Smooth images when zooming
[X] Confirm image deletion
[ ] Show hidden images
}
[Close]
}
@endsalt
```

:::

::: demo markdown title="Archimate Diagram"

```md
@startuml
skinparam rectangle<<behavior>> {
  roundCorner 25
}
sprite $bProcess jar:archimate/business-process
sprite $aService jar:archimate/application-service
sprite $aComponent jar:archimate/application-component

rectangle "Handle claim"  as HC <<$bProcess>><<behavior>> #Business
rectangle "Capture Information"  as CI <<$bProcess>><<behavior>> #Business
rectangle "Notify\nAdditional Stakeholders" as NAS <<$bProcess>><<behavior>> #Business
rectangle "Validate" as V <<$bProcess>><<behavior>> #Business
rectangle "Investigate" as I <<$bProcess>><<behavior>> #Business
rectangle "Pay" as P <<$bProcess>><<behavior>> #Business

HC *-down- CI
HC*-down- NAS
HC *-down- V
HC*-down- I
HC *-down- P

CI -right->> NAS
NAS -right->> V
V -right->> I
I -right->> P

rectangle "Scanning" as scanning <<$aService>><<behavior>> #Application
rectangle "Customer admnistration" as customerAdministration <<$aService>><<behavior>> #Application
rectangle "Claims admnistration" as claimsAdministration <<$aService>><<behavior>> #Application
rectangle Printing <<$aService>><<behavior>> #Application
rectangle Payment <<$aService>><<behavior>> #Application

scanning -up-> CI
customerAdministration  -up-> CI
claimsAdministration -up-> NAS
claimsAdministration -up-> V
claimsAdministration -up-> I
Payment -up-> P

Printing -up-> V
Printing -up-> P

rectangle "Document\nManagement\nSystem" as DMS <<$aComponent>> #Application
rectangle "General\nCRM\nSystem" as CRM <<$aComponent>>  #Application
rectangle "Home & Away\nPolicy\nAdministration" as HAPA <<$aComponent>> #Application
rectangle "Home & Away\nFinancial\nAdministration" as HFPA <<$aComponent>>  #Application

DMS .up.|> scanning
DMS .up.|> Printing
CRM .up.|> customerAdministration
HAPA .up.|> claimsAdministration
HFPA .up.|> Payment

legend left
Example from the "Archisurance case study" (OpenGroup).
See
====
<$bProcess> :business process
====
<$aService> : application service
====
<$aComponent> : application component
endlegend
@enduml
```

:::

::: demo markdown title="Gantt Chart"

```md
@startgantt
<style>
ganttDiagram {
  task {
    FontName Helvetica
    FontColor red
    FontSize 18
    FontStyle bold
    BackGroundColor GreenYellow
    LineColor blue
  }
  milestone {
    FontColor blue
    FontSize 25
    FontStyle italic
    BackGroundColor yellow
    LineColor red
  }
  note {
    FontColor DarkGreen
    FontSize 10
    LineColor OrangeRed
  }
  arrow {
    FontName Helvetica
    FontColor red
    FontSize 18
    FontStyle bold
    BackGroundColor GreenYellow
    LineColor blue
    LineStyle 8.0;13.0
    LineThickness 3.0
  }
  separator {
    BackgroundColor lightGreen
    LineStyle 8.0;3.0
    LineColor red
    LineThickness 1.0
    FontSize 16
    FontStyle bold
    FontColor purple
    Margin 5
    Padding 20
  }
  timeline {
      BackgroundColor Bisque
  }
  closed {
    BackgroundColor pink
    FontColor red
  }
}
</style>
Project starts the 2020-12-01

[Task1] requires 10 days
sunday are closed

note bottom
  memo1 ...
  memo2 ...
  explanations1 ...
  explanations2 ...
end note

[Task2] requires 20 days
[Task2] starts 10 days after [Task1]'s end
-- Separator title --
[M1] happens on 5 days after [Task1]'s end

<style>
  separator {
      LineColor black
    Margin 0
    Padding 0
  }
</style>

-- end --
@endgantt
```

:::

::: demo markdown title="Mind Map"

```md
@startmindmap
caption figure 1
title My super title

* <&flag>Debian
**<&globe>Ubuntu
***Linux Mint
*** Kubuntu
***Lubuntu
*** KDE Neon
** <&graph>LMDE
**<&pulse>SolydXK
** <&people>SteamOS
** <&star>Raspbian with a very long name
***<s>Raspmbc</s> => OSMC
*** <s>Raspyfi</s> => Volumio

header
My super header
endheader

center footer My super footer

legend right
  Short
  legend
endlegend
@endmindmap
```

:::

::: demo markdown title="Work Breakdown Structure"

```md
@startwbs
+ New Job
++ Decide on Job Requirements
+++ Identity gaps
+++ Review JDs
++++ Sign-Up for courses
++++ Volunteer
++++ Reading
++- Checklist
+++- Responsibilities
+++- Location
++ CV Upload Done
+++ CV Updated
++++ Spelling & Grammar
++++ Check dates
---- Skills
+++ Recruitment sites chosen
@endwbs
```

:::

::: demo markdown title="JSON"

```md
@startjson
# highlight "lastName"
# highlight "address" / "city"
# highlight "phoneNumbers" / "0" / "number"
{
  "firstName": "John",
  "lastName": "Smith",
  "isAlive": true,
  "age": 28,
  "address": {
    "streetAddress": "21 2nd Street",
    "city": "New York",
    "state": "NY",
    "postalCode": "10021-3100"
  },
  "phoneNumbers": [
    {
      "type": "home",
      "number": "212 555-1234"
    },
    {
      "type": "office",
      "number": "646 555-4567"
    }
  ],
  "children": [],
  "spouse": null
}
@endjson
```

:::

::: demo markdown title="YAML"

```md
@startyaml
doe: "a deer, a female deer"
ray: "a drop of golden sun"
pi: 3.14159
xmas: true
french-hens: 3
calling-birds:
  - huey
  - dewey
  - louie
  - fred
xmas-fifth-day:
  calling-birds: four
  french-hens: 3
  golden-rings: 5
  partridges:
    count: 1
    location: "a pear tree"
  turtle-doves: two
@endyaml
```

:::