NoteGPT
Summarizes YouTube videos, turns transcripts into notes, and lets you translate, copy or download subtitles.
Chrome extension
Reads YouTube subtitles out loud with synthetic voices in many languages, so you can listen to a video instead of reading captions.
Speak Subtitles for YouTube turns the text captions on a YouTube video into spoken audio using synthetic voices. It is useful for viewers who would rather listen than read subtitles, such as people watching foreign-language videos or anyone with reading fatigue.
Open a YouTube video with subtitles available, then turn on the extension and pick a voice so the captions are read out as the video plays.
It only works when the video has subtitles to read from. The developer notes it can conflict with other YouTube extensions, so disabling those may help if it stops working.