Private by design
The source file remains on your device. SparkCut reads it only inside the current browser tab.
100% FREE PRIVATE BROWSER PROCESSING
One video. Real clips.
SparkCut analyzes your video’s real audio energy, finds standout moments, and renders vertical MP4 clips directly on your device. No upload server. No API key. No fake progress.
◉ Your video never leaves this browser
ACTUALLY WORKSReal analysis•Real MP4 rendering•Multiple clips•Free downloads
LOCAL VIDEO ANALYSIS ✦ REAL MP4 EXPORTS ✦ 9:16 REFRAINING ✦ EDITABLE DESCRIPTIONS ✦ LOCAL VIDEO ANALYSIS ✦ REAL MP4 EXPORTS
01
CHOOSE A LOCAL VIDEO
Your private clipping workspace.
Drop your video here
MP4, MOV, or WebM · up to 750 MB · desktop recommended
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WHY IT STAYS FREE
Your computer does the work.
Signal-based detection
Real audio energy and pacing identify moments likely to hold attention—without pretending to guarantee virality.
Actual MP4 files
FFmpeg renders vertical, TikTok-ready files you can preview and download immediately.