JNLP File Extension

JNLP file icon
Java Web Start Format
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What is JNLP file?

Files with the .JNLP extension contain data stored using XML syntax. Such data concerns an application or a Java applet, which source code is located on a remote computer, and it supposed to be opened locally, according to the Java Network Launching Protocol.

JNLP file contains:

  • Information about the application – e. g.: title, producer, description,
  • Resources of the application – address of website where the JAR package is located,
  • Security measures – right enabling to perform certain actions,
  • Target element – class and parameters of an application or a web-applet.

Additional information

JNLP file may also contain many different details about various elements of an application, which specification can be found on the Oracle web pages. It can be run in the JRE environment. Content of a file can be displayed using any text editor.

Programs that support JNLP file

We hope we helped you solve the problem with the JNLP file. If you do not know where you can download the application from our list, click on the link (which is the name of the program) - you will find more information there on the location where to download the secure setup version of the required application.

What else may cause problems?

There can be more reasons which determine that you are not able to open the JNLP file (apart from the lack of the proper application installed).

First - the JNLP file may be incorrectly associated with the application installed to support it. In this case, you need to change this association by yourself. To do this, right-click on the JNLP file that you want to edit, click "Open with" and then select the program from the list that you have installed. After this operation, the problems with opening the JNLP file should be solved.

Second - the file you want to open can simply be damaged. Then, the best solution is to find a new version of given file, or download it again from the same source as before (maybe for some reason in the previous session the download of the JNLP file has not been completed and it cannot be opened properly).

Do you want to help?

If you have additional information about the JNLP file, we will be grateful if you share it with our users. To do this, use the form here and send us your information on JNLP file.

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