How to Let OpenLiteSpeed Web Server Know the MIME Type of WebManifest Files

By default, the OpenLiteSpeed Web Server does not know the MIME type (application/json) of the “.webmanifest” manifest files of Progressive Web Applications (PWA), so the mentioned files are served with the “application/octet-stream” MIME type that actually represents unknown binary files.

a) Configuring

Open the /usr/local/lsws/conf/mime.properties file on your favorite text editor with superuser privileges and add the following line mentioning the specific MIME type of your desired file.
webmanifest = application/json

b) Restarting

Changes will take effect after you give the OpenLiteSpeed Web Server a graceful restart. (Graceful restart ensures zero downtime.)

• In case of its WebAdmin Console: Just click on Graceful Restart icon and then proceed to Yes.
• In case of systemd: sudo systemctl restart openlitespeed.service or sudo systemctl restart lsws.service

Documentation

• https://www.litespeedtech.com/support/wiki/doku.php/litespeed_wiki:config:add-mime-type