LastFirst

Watch from the first episode.

Reverse your YouTube playlist for lectures, series, and more.

No sign-in · No installation · Original playlist unchanged

Works with a playlist page URL (youtube.com/playlist?list=…), a video URL that includes a list= parameter, or a playlist ID starting with PL.

Works from your phone, too

Works the same way on your phone. Share the playlist, paste the link, then just watch.

Share it from the YouTube app
Copy the link
Paste it here, hit Reverse
Tap one to watch

FAQ

Why does YouTube play playlists newest-first?

Each new upload gets added to the top of the list — that’s just how playlists get built over time. There’s no setting to flip it if you don’t own the playlist, which is the whole reason this exists.

Do I need to install anything or log into YouTube?

Neither. Paste the link, hit Reverse, and you’re watching. Nothing stored, nothing to sign into.

Does this edit the playlist, or just give me a link?

Just a link. Your account and the original playlist are never touched, so this works even on playlists that belong to someone else.

What if the playlist is really long?

You’ll get more than one watch link, each holding about 50 videos, still in the right order. Open them one after another.