gloatograph 

A photograph taken and shared on social media with the sole purpose of making others feel jealous. Pictures depicting wonderful and aspirational life circumstances are typical of the genre eg. skiing holidays, new sports cars, plates of Michelin starred food etc

When he returned from the Alps he littered his Facebook account with a series of irritating gloatographs

gloatograph by Drbob February 12, 2015

glotograph 

noun
a picture of an exotic foreign locale, made using a camera and shared through the internet, usually for the purposes of reminding people back home in bad weather just how unlucky they are. Less commonly, may also apply to images of newly-acquired significant others.

Canadian spelling: "Gloatograph".

Short form: gloto

That January, Mike and Kerri eloped to Hawaii, where they posted many glotographs of Maui sunsets on Facebook, much to the chagrin of their jealous friends in Calgary.

glotograph by MidnightTuiliq January 28, 2009