Advanced SubStation Alpha, the format serious subtitling actually uses. Fonts, colours, positioning, rotation, karaoke timing - anything you've seen a fansub do, it was doing it here. Converting to SRT throws all of that away and keeps the words.

Every conversion below runs in this page, on your own machine. Nothing is uploaded, there is no queue, and there is no account to make. Pick a target format, or just drop an ASS file above and choose afterwards.