って感じ【ってかんじ】

って感じ gives a rough impression instead of a firm statement: "kind of like…", "it's got a … feel". It follows a plain-form sentence, and a noun or な-adjective goes straight in front with no だ. かんじ感じ is "feeling"; the って is the casual quotation particle.

Someone's attitude

With a quoted phrase in front, って感じ says what someone's manner seemed to say, like English "he was like…".

Checking the gist

As a question, って感じ？ asks whether you have understood the other person's point.

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って感じ is casual speech and casual writing – messages, social media. It does not belong in polite or formal Japanese. The same 感じ comes after こんな, そんな and あんな without って: そんなかんじ感じ。"Yeah, something like that."