Browser-only compression
Free Video Compressor
Reduce video file size for email, LMS uploads, or faster sharing. Pick a quality preset and compress locally. Your file never uploads to our servers.
Quick answer
Free Video Compressor is a free browser tool on Knowlify. Use it below with no signup. Media files are processed on your device and are not uploaded to our servers. For narrated training videos from documents, use https://create.knowlify.com.
How it works
Three steps, no account
01
Upload a video
Choose an MP4 or other common video file from your device.
02
Pick a quality preset
High keeps more detail. Medium balances size and clarity. Small targets the smallest file.
03
Download the compressed file
Compare sizes, then save. For training libraries that change often, generate fresh videos from docs in Knowlify.
FAQ
Questions people ask about Free Video Compressor
Will compression ruin quality?+
Any compression trades some quality for size. Start with High, then try Medium if you still need a smaller file.
Is my video uploaded?+
No. Compression runs entirely in your browser with FFmpeg.wasm.
How long does it take?+
Short clips finish in under a minute. Longer or higher-resolution videos take longer because encoding is CPU-bound.
Is this video compressor free?+
Yes. Compress MP4 and common video files in your browser with no signup, no watermark, and no server upload.
How do I compress a video for email or Discord?+
Drop the file here, pick a smaller preset (Medium or Small), download, then check the size. For a hard 8 MB Discord cap, use the Discord video compressor.
Do I need an account?+
No. Open the tool, use it in your browser, and download or copy the result.
Need a full video, not just a utility?
Compressing exports is fine for one-offs. When policies change weekly, regenerate training videos from the source doc in Knowlify.
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