Hashtags or keywords: what Pinterest actually reads
Pinterest is a visual search engine. When someone types a phrase, Pinterest looks for pins whose title, description, board name, image text and linked page match it. Hashtags are just words with a symbol in front, and they are clickable in a description, but they are not a separate ranking system. A pin titled with a clear phrase, saved to a well named board, will do far more than one with twenty tags and a vague title.
That does not make hashtags useless. They can reinforce a topic, help a pin show up when someone clicks a tag, and keep your wording consistent across platforms. The sensible approach is to write a natural description first, then add two to five tags that describe that specific pin. Each niche page here splits tags into core, topic and community sets so you can pick the right handful instead of pasting all thirty.
How these sets are built
Every set is curated by hand. There is no volume, popularity or reach data on these pages, because this site does not have it and will not make it up. Core tags are broad and widely understood, topic tags describe one kind of pin, and community tags are more useful on Instagram and TikTok. Before you lean on a tag, type it into the Pinterest search bar to see whether related suggestions appear.
For the words that matter most, start with Pinterest keywords by niche, then name your boards with the board name ideas and design the pin in the free pin maker.