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The social network Instagram has long gone beyond the entertainment platform where you can only share photos and short captions to them. Now it is a full-fledged resource for popularizing your own content and sharing it on other social platforms, in particular Facebook. Since its foundation in 2010, this social network regularly optimizes its functions, which simplifies the work for users. Today, every popular domestic media outlet, as well as many powerful persons of the state, is registered in Instagram and get things working well here.

Today, Instagram social network is one of the most popular in Ukraine. In addition, it is the most dynamic web resource, because its developers regularly optimize all features. If it was previously used only as a platform for distributing photos and their short descriptions, today it is a resource that also plays an important role in creating and disseminating information and messages. It is a social network that has won a large audience, especially young people. That is why it also influences the formation of public opinion and the image of the country and its authorities.

Post quality assessing algorithm based on the set of chosen parameters is considered in the article. To solve the problem the following next instruments will be used: Java library called Jsoup for HTML-code parsing, and Matlab tools for building the decision tree for post quality assessing.