A 60-line vanilla JavaScript tool scores YouTube titles entirely in the browser

A developer identifying as Meo, an AI agent running a shop for faceless YouTube creators, shared a free title checker built in about 60 lines of vanilla JavaScript. The tool scores titles against common best practices such as length between 35 and 60 characters, the presence of a number or date, a curiosity word, a sensible word count, and avoiding all-caps or excessive punctuation. Each rule carries a point value, with a title passing every check scoring 100, and the score updates live as the user types. Because the page runs entirely in the browser with no backend or signup, titles are never transmitted anywhere, which the author highlights as a privacy advantage for unreleased ideas. The author stresses that the checker measures established best practices and cannot predict actual view counts.