Board Thread:Naruto Discussions/@comment-43869095-20190919012522/@comment-9782468-20190919124735

Manga Canon Episodes: 20-23, 26-27, 29-44, 46-48, 51-53, 55, 72-88, 113-114, 116-126, 129-143, 152-169, 172-175, 197-212, 214-222, 243-256, 261-270, 272-278, 282-283, 296-302, 321-323, 325-326, 329, 332-337, 339-345, 362-375, 378-384, 387, 391-393, 414-415, 418, 420-421, 424-425, 459, 463, 470, 473-477

Mixed Canon/Filler Episodes: 1-19, 24-25, 45, 49-50, 54, 56, 89, 115, 127-128, 213, 324, 327-328, 330-331, 338, 346, 385-386, 388, 417, 419, 426, 451-458, 460-462, 471-472, 478-479, 484-500

The rest are filler. Just a quick look at google would have found you the same list, first link.

To be clear, all filler episodes are omitted in that list. The mixed canon ones are, I'm assuming, ones that have the studio expanding upon the current story rather than making new arcs. But they're separated if you wanna omit those as well