The jnlp file extension is mainly related to Ja and used for Ja Network Launching Protocol files that are formatted in XML and are used for launching and managing Ja programs on Internet or as standalone applications over a private network.
Using Ja Web Start technology, standalone Ja software applications can be deployed with a single click over the network. Ja Web Start ensures the most current version of the application will be deployed, as well as the correct version of the Ja Runtime Environment (JRE).
MIME types:application/x-ja-jnlp-file
Files with jnlp extension can be most often found as settings files for the Ja Network Launching Protocol that is used for launching Ja programs on internet or as standalone applications over a private network.
How to open:The *.jnlp files can be viewed/edited in any text or source code editor.How to convert:There is no reason to convert *.jnlp files to other formats.