Learn from YouTube without the rabbit hole.
Paste a video or a playlist link and get a calm, course-style classroom: chapter-by-chapter lessons, a collapsible sidebar, and nothing else competing for your attention.
- 100%
- distraction-free
- 0
- accounts needed
- 1-click
- video & playlist import
Your YouTube, as a classroom
Features
Everything you need to actually finish what you start
Zero distractions
No recommended videos, shorts, comments or autoplay rabbit holes. Just the videos and playlists you chose.
Course-style player
Chapter-by-chapter lessons with a clean sidebar — split any long video or playlist into a proper course.
Two ways to add content
Import a whole playlist, or add a single video and let its timestamps become lessons. Your key, your browser.
Favorites & recents
Videos and playlists each get their own tab — pin what you love and keep track of what you watched last.
Private by design
Everything is stored in your own browser. No account, no tracking, no server-side watch history.
Pick up where you left off
Per-lesson progress, resume pointers and completion tracking make long videos easy to finish.
Why Focusy
Two ways to turn YouTube into a classroom
Single video or full playlist — either way you get lessons, progress and zero distractions.
One long video → a lesson-by-lesson course
Paste any tutorial, lecture, talk or podcast. Focusy splits it by the timestamps in its description into resumable lessons.
- Chapters parsed automatically — or pasted manually, no key needed
- Per-lesson progress, resume points and completion tracking
- Rename, retime, add or reorder lessons anytime
A whole playlist → a calm classroom
Import any YouTube playlist once and watch it start-to-finish with a clean lesson list — nothing competing for your attention.
- Full import: titles, thumbnails, order and channel info
- Drag-to-reorder library with favorites and recents
- Per-video progress and nested chapters in the sidebar
How it works
From link to classroom in seconds
Paste a link or ID
Any YouTube video URL (its timestamps become lessons) or a whole playlist link.
We build your classroom
Titles, thumbnails, order and chapters are imported automatically with your free API key.
Watch distraction-free
Learn lesson by lesson — the sidebar keeps every chapter and video one click away.
FAQ
Questions, answered
Do I need a YouTube API key?
Only for auto-importing. A free YouTube Data API v3 key (≈2 minutes to create — the in-app Settings page walks you through it) lets Focusy fetch playlist details and video chapters instantly. Without a key you can still add videos in manual mode by pasting the chapter list yourself.
Where is my data stored?
Entirely in your browser (localStorage). No account, no server-side watch history, no tracking. Your API key never leaves your device — it's used directly from the browser against YouTube's API.
How do video lessons work?
Creators already put timestamps like “00:00 Intro” in their descriptions. Focusy parses each timestamp into a lesson that plays only its own segment of the video, tracks completion, and remembers where you left off — like Udemy or Coursera, but for any YouTube video.
Do ads or recommendations still show up?
Recommendations, Shorts, comments and the autoplay rabbit hole are gone — the player is fully custom with native controls hidden. Monetized videos can still show YouTube's pre-roll ads inside the embed; that's controlled by the creator, not the player.
Does it work on mobile?
Yes. The whole app is responsive: grids collapse to single columns, sidebars become stacked lists or slide-in drawers, and the custom player chrome adapts to touch.
What happens if I clear my browser data?
Libraries and progress live in localStorage, so clearing site data resets the app. Everything is re-importable in seconds — paste the same links and you're back where you were.
Ready to learn without getting sidetracked?
Add a video or import a playlist now. It stays in your browser library — ready whenever you are.