If you are seeking information about file extensions, then you are in the right place at the right time.

Details of extension .puml

On this page, we're going to take a closer look at the .puml file extension, which is related to PlantUML Diagram.

We'll explain what exactly a .puml file format is and how you can use it. If you're interested in learning more details about this type of file, we'll show you where to find them. And if you ever need to convert .puml files into different formats, we'll give you some tips on how to do that too.

Let's see the file format associated with this file extension!


  1. PlantUML Diagram

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PlantUML Diagram

puml file - PlantUML Diagram
The PUML file belongs to the Development category and works with PlantUML, being used as a PlantUML Diagram. PlantUML is used to draw UML diagrams, using a simple and human readable text description. The developer is still actively supporting the PlantUML, likely. Our data shows that PlantUML uses 2 more file types.
Application: PlantUML
Program name: -
Category: Development files
Mime-type: application/octet-stream
Related extensions:
.ciq CONNX InfoNaut Query
.ap3 VS10XX VSOS Application
.wis Rocket wIntegrate Script
.jmdac Modelio Compiled Module

The .puml file extension might not only belong to a single type of file, there could be various kinds that use it. Keep in mind that files with the .puml extension may contain various content types. If you have helpful information about this extension, write to us!

Could someone have spelled the .puml file extension wrong?

In our database, we came across the following similar extensions:

.pml Palm Markup Language File
.pul PATCHMASTER Pulsed Tree Data
.uml Visual UML Model Data
.pum Noptel NOS Shot Data

The .puml extension is frequently misused

People sometimes confuse the .puml filename extension. Based on the searches on our site, here are the most common misspellings from the past year.

pml (1), pul (1), uml (1), pum (1)

Having trouble opening a .puml file?

If you want to open a .puml file on your computer, you just need to have the appropriate program installed. Incorrect settings for the .puml association can trigger this error.

Windows can't open this file:

File: example.puml

To open this file, Windows needs to know what program you want to use to open it. Windows can go online to look it up automatically, or you can manually select from a list of programs that are installed on your computer.

To change file associations:

  • Right-click a file with the extension whose association you want to change, and then click Open With.
  • In the Open With dialog box, click the program with which you want the file to open, or click Browse to locate the program that you want.
  • Select the Always use the selected program to open this kind of file check box.

Supported operating systems

Windows Server 2016/2019/2022, Windows 7, Windows 8, Windows 10, Windows 11, Linux, Mac OS X, macOS, iOS, Android