A creator watches a video that pulled millions of views and wonders what its title did that theirs didn't. The usual answer is a second browser tab and a lot of guessing. Danwoo.Video moved the question onto the video page itself.
Open any watch page and a purple "Analyze with Danwoo" button appears next to the channel name. The popup pulls the video's title, sends it to gpt-4o-mini with a prompt tuned for viral analysis, and hands back a shorts script and three alternate titles, stripped of markdown so they paste clean. One button copies the whole thing.
It shipped as eight files with no build step and no backend, which was the appeal and the ceiling at once. The whole project is a weekend-sized idea that shipped as exactly that, and it sits in the archive as one.