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Automatically generates YouTube chapters from comment timestamps with auto-fixing of invalid formats Markd adds visual chapter markers to YouTube's progress bar so you can navigate videos instantly. KEY FEATURES • Automatic Chapter Detection Finds chapters from three sources: — SponsorBlock community database — Video descriptions — User comments • Custom Timestamps Paste your own chapters from anywhere Supports: "0:00 Title", "[0:00] Title", "00:00 - Title" • Visual Progress Bar Color-coded segments show all chapters at a glance Hover for names • Click to jump instantly • Keyboard Shortcuts Shift + Arrows (Chrome) or CTRL + Arrows (Firefox) • Smart & Clean Auto-validates timestamps • Removes duplicates Seamless YouTube integration 🔒 PRIVACY FIRST ✓ No tracking or data collection ✓ No ads ✓ Custom timestamps stored locally only ✓ Open source and transparent 📦 HOW IT WORKS 1. Install extension 2. Open any YouTube video 3. Chapters appear automatically 4. Hover and click, or use keyboard shortcuts That's it. No configuration needed. Perfect for students, researchers, content creators, and anyone who values efficient video navigation.
Mar 18, 2026
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