Which episodes of One Piece are filler? - Anime & Manga Stack Exchange

I want to watch One Piece, but the anime has a lot of filler content not in the manga. I'd rather not watch the filler content and only watch the episodes which are directly related to the plot. To

Should I watch Gin Tama? If yes, then give me reasons and how is

One Piece Filler List - One Piece Anime Guide

Did Fairy Tail plagiarize One Piece? - Anime & Manga Stack

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Ryuboshi, One Piece Wiki

Discuss Everything About One Piece Wiki

one piece - How far along is the anime compared with the manga

Yuri to Boushi to Hon no Tabibito