Using this extension, you can download subtitles from Youtube in multiple file formats.
Supported file formats are .srt, .vtt, .lrc, .csv and .txt.
This extension doesn't show ads and send user's data anywhere.
Youtube subtitle download helper is open source software.
https://chrome.google.com/webstore/detail/youtube-subtitle-download/dpmmcccjdcgdjnlnicicdbnlmohhpagf
Click & Press Download!