Quick Start Guide
Go to lefti.co.uk in your web browser. No download required!
Copy any YouTube tutorial URL and paste it into the input field. Lefti works with any public YouTube video.
Click "Load Video" to open the tutorial in Lefti's custom player with enhanced controls.
Use the "Flip" switch to mirror the video horizontally. The tutorial now appears made for left-handed learners!
Click "Add to Library" to save the tutorial with custom title, notes, categories, and timestamps.
How Video Flipping Works
Lefti uses CSS transforms to horizontally flip YouTube videos in real-time. When you toggle the flip switch:
- Instant mirroring - The video flips horizontally without interrupting playback
- Quality preserved - Original video quality and resolution maintained
- Smooth performance - GPU-accelerated transforms for smooth playback
- Visual feedback - Flip badge appears when video is mirrored
Smart Features
Lefti automatically detects when flipping is needed:
- Left-handed user + Right-handed tutorial = Flipped
- Right-handed user + Left-handed tutorial = Flipped
- Same handedness = Not flipped
This prevents unnecessary flipping of already left-handed tutorials.
Organize your tutorials better than YouTube playlists:
- Custom titles - Name tutorials however you want
- Personal notes - Add tips and technique notes
- Categories - Organize by craft type (Crochet, Knitting, etc.)
- Timestamps - Jump straight to specific sections
- Search - Find tutorials across your entire library
Lefti works perfectly on mobile devices:
- Touch-friendly - Large buttons and touch-optimized controls
- Responsive design - Adapts to all screen sizes
- Fast loading - Optimized for mobile networks
- Cross-device sync - Access your library anywhere
Perfect For
Learn crochet, knitting, drawing, cooking, and other hands-on skills from right-handed tutorials without mental mirroring.
Learn from talented left-handed instructors by flipping their tutorials to match your perspective.
Teach mixed-handedness classes by showing both perspectives of the same tutorial.
Anyone can use Lefti's skills library to better organize and manage YouTube tutorials.
Pro Tips
Go to the Skills Library tab and set your handedness preference. This enables smart flip logic for automatic flipping.
When saving tutorials, add timestamps for key techniques. You can jump straight to specific sections later.
Include personal notes when saving tutorials. Note technique variations, tips, or reminders for future reference.
Use the search feature in your skills library to quickly find tutorials by title, notes, or category.
Common Questions
No! Flipping uses CSS transforms, so the original video quality is preserved. You get the same resolution and clarity as the original YouTube video.
Yes! Lefti is fully responsive and optimized for mobile devices. The interface adapts to touch interactions and mobile viewing patterns.
Yes! Lefti is completely free. You can flip videos and save them to your skills library without any cost or subscription.
No account is required for basic video flipping. However, creating a free account enables the skills library, cross-device sync, and handedness preferences.