Looks like http://kanji.wareya.moe/ http://kanji.wareya.moe/ ( or even older https://www.chise.org/ids-find https://www.chise.org/ids-find ) with a slightly dif

Looks like http://kanji.wareya.moe/ http://kanji.wareya.moe/ ( or even older https://www.chise.org/ids-find https://www.chise.org/ids-find ) with a slightly different UI.