What is difference between .hpi and .jpi of Jenkins plugins?

Question

I have installed Jenkins plugins in two ways i.e. manually keeping the .hpi file in Jenkins home directory, and installing from Jenkins front-end (Manage Jenkins >

Answer 1

Plugins as present in $JENKINS_HOME/plugins/ should always be using the .jpi suffix (with the basename being the plugin identifier). Normally Jenkins will enforce this naming pattern even when uploading a plugin manually, regardless of what filename you used for the upload, so I am not sure how you came to have a *.hpi file here, unless you directly copied it into this filesystem location.