What you can do
Most of this is one or two clicks away and nothing needs an account. Start with the first one; the rest will still be here.
Repeat one part of a video
Paste a YouTube link, press Start here when the part begins and End here when it finishes. That section repeats until you stop it. The deck tells you how exactly it is landing, in milliseconds, because a looper that claims to be precise should show its working.
Send it to someone
Press Share and you get a link. Whoever opens it hears that exact section with nothing to install, on any phone, even if they have never heard of LoopLab. Add a message and your name and they meet those first, full screen, before it plays.
You can record a short voice note instead of typing. It plays before the loop does, which is the difference between sending a link and sending something only you could have sent.
Ask instead of tell
Send a song as a question rather than an answer. The other person marks their favourite part and sends it back, and both loops live on the same page. A loop somebody sends you can always be answered with another one.
Mark several parts at once
Press + Section to keep the part you have marked, then mark another. Name them if you like. They all travel in one link, so a teacher can send a week of practice as a single message instead of five.
Use your own audio file
Press File in the box on the front page. Your own file can do what a YouTube video cannot: the loop is exact, with no gap at all where it comes round, and you see the real shape of the sound on the timeline. It works with no internet.
The file never leaves your device. Nothing is uploaded. That is also why a loop of your own file cannot be sent to anyone — they have no copy of it.
Put a loop in your own page
Writing a lesson, a blog post or a course page? In the share window, open Put this on a website and copy the line it gives you. The video appears inside your page, already set to that section. It waits for your reader to press play, and it always shows where the video came from.
Practise properly
Slow a passage down, step the speed back up as you get it, and run a metronome over the top. Type exact times if clicking is not precise enough, and nudge either end by a hundredth of a second.
Get to it faster
On a phone, share a video straight from the YouTube app into LoopLab. On a computer, use the bookmarklet from About and one click sends whatever you are watching here. Or press A and B while it plays — the full list of keys is in How it works.
What it costs
Looping, sharing, messages, voice notes and replies are free and are meant to stay that way. They are how people find LoopLab. Nothing here asks for an account.