I want to know about this also. I usually watch Japanese songs in YouTube with CC on (set to Japanese). Some songs also had hard Japanese subs on them. But I want to know if there is a website of this.
One thing that I do when trying to learn the meaning of lyrics is to scroll through
the YouTube comments. If the song is really popular, there’s a chance some other
fan has posted the lyrics in English in the comments.
and cut and paste the Japanese lyrics into Google Translate. The translation will usually be awkward but it will at least give you a general idea, and the results will also be in romaji so you can learn pronunciations.
Usually you can just google the song name with 歌詞 and google will list the lyrics for you. It’s also often available on Spotify/Google Music etc. But that’s without a translation for translated lyrics you’d often need to search separately and hope that some fans translated them.
While you can find English translations for most semi-popular songs by just googling for them (at least vocaloid songs), a lot of these are notoriously terrible. I’ve found a lot of examples which is just glorified (sometimes not even that) google translate output. So yeah, take care not to learn from google translate decisions.