Auto-extract slides from video lectures with complete answers
Free Demo - First 10 Minutes Only
Sign up free for 15-minute videos
Drag and drop your video here
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Supported: MP4, AVI, MOV, MKV (max 4GB)
File Selected:
Higher = faster processing (recommended: 3-5 seconds)
Higher = fewer duplicates (0.90-0.95 recommended)
Based on your current settings, slides will be saved at this quality level.
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Slide Extraction
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🎙️ Lecture Notes Generation
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Unique Slides
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Reduction
Process unlimited videos of any length, with no monthly cap.
Sign Up Free - Just $8.99/monthEverything you need to extract slides from lectures
Automatically detects and extracts unique slides from video lectures with advanced AI algorithms.
Unlike one-click tools, fine-tune every aspect: quality presets, frame intervals, similarity thresholds, and presenter masking. Get perfect results for your specific videos.
Intelligent similarity detection removes duplicate frames, keeping only unique content.
Get a ready-to-use PowerPoint presentation with all extracted slides in perfect quality.
From video to slides in three simple steps
Drag and drop your lecture video. Supports MP4, AVI, MOV, and MKV formats up to 2GB.
Choose quality presets, adjust frame intervals and similarity thresholds, or let our smart defaults handle it. Our AI extracts frames, removes duplicates, and optionally masks presenter overlays with full control over every setting.
Get your complete PowerPoint presentation with all unique slides, ready to use or share. Files are automatically deleted after 24 hours to save storage and protect your privacy.
See what our users are saying
MS-3
"Honestly a lifesaver for step exams! The slides come out so clear - you can actually see the details in X-rays and MRIs. Used to spend 2+ hours screenshotting a single lecture 😅 Now it's done in minutes."
CS '26 @ Cal
"The customization options are INSANE compared to other tools. Being able to tweak similarity thresholds and frame intervals means I can optimize for dense algorithm slides vs. simple concept slides. Game changer for CS courses."
PhD Student, Neuroscience
"Perfect for capturing complex diagrams and equations from recorded lectures. The quality presets let me balance speed vs. detail depending on the content. Saves me hours every week!"
Choose the plan that works for you
Everything you need to know
Absolutely! Your videos are processed entirely on your device using your browser. Nothing is uploaded to our servers. Your lecture content never leaves your computer, ensuring complete privacy and security.
We support MP4, AVI, MOV, and MKV formats. Videos can be up to 4GB in size. The free demo processes the first 10 minutes of any video. A free account gives you 15 minutes per video; Pro removes the limit entirely.
Since processing happens locally in your browser, speed depends on your device's capabilities. Typical processing is 2-5x faster than the video length. A 1-hour lecture usually takes 12-30 minutes depending on your settings and hardware.
LectureHarvest offers extensive control: choose from 3 quality presets (Fast, Balanced, High Quality), adjust frame intervals (1-10 seconds), fine-tune similarity thresholds (0.5-1.0), select from 6 presenter positions, and toggle presenter masking. Perfect for optimizing results for your specific content.
Our intelligent masking can detect and remove presenter video overlays (webcam feeds) that appear in corners of lecture recordings. Simply enable the option and select where the presenter appears, and we'll focus extraction on the actual slide content.
Yes — download the video first (the upload page links to a couple of free tools), then drop the file in like any other video. This works on every plan, including the free demo. We don't fetch YouTube URLs for you, which is part of how your videos stay on your own device.
The free demo processes the first 10 minutes of any video and allows 3 total conversions. A free account raises that to 15 minutes per video, 3 videos every month. Pro ($8.99/month) removes all limits on both length and quantity.
No! LectureHarvest runs entirely in your web browser. Just visit the site with a modern browser (Chrome, Firefox, Safari, or Edge) and start processing. No downloads, installations, or extensions required.
Pro ($8.99/month): Unlimited videos, unlimited video length, and email support. Perfect for students and professionals who need to process multiple lectures regularly.