In order to help to view texts in Meitei script properly, you need to have your device set up to see web pages encoded in Unicode Meitei script (extended). To do this, you need to have a Unicode capable browser and Unicode Meetei Mayek fonts Meetei Mayek (Unicode block). Firefox's latest versions support viewing Meitei script once you install the fonts.
This website uses the Wikivoyage API to get and display all the information you see. This is the MediaWiki API, which is a general API for accessing data from Wikimedia projects. You can find information about it here: MediaWiki API.