Pinterest silently truncates or rejects text that runs past its per-field limits, and each field — title, description, bio, board name, comment — has a different cap. This live counter loads the correct limit for the field you pick and warns you with colour before you cross it.
How it works
Each field has a fixed maximum character count. The tool measures your text length and compares it to that field’s cap, with a warning band before the limit:
title ≤ 100 (≈40 visible)
description ≤ 500 (≈50–60 visible)
board name ≤ 100
bio ≤ 160
comment ≤ 500
Length is measured in actual characters, including spaces and the multiple units that some emoji consume, so the count matches what Pinterest will actually store.
Tips and notes
Because Pinterest only shows the first few dozen characters of titles and descriptions in the feed, front-load your keyword and hook into that visible window even though you have room to write more. Keep board names short and keyword-led for search, and treat your 160-character bio as prime SEO real estate. The amber warning fires at 90 percent of the limit so you have time to trim before anything is cut.