Video Compressor - Reduce File Size Online Free

Compress videos to reduce file size without losing quality. Choose compression level, target size, preview results. Works offline, no uploads.

1. Upload Video

Drop video or click to browse

MP4, WebM, MOV, AVI

Preview

Upload and compress to preview

Frequently Asked Questions

Compression depends on the level chosen. High compression can reduce size by 70-90% but with noticeable quality loss. Medium compression (recommended) reduces size by 50-70% with balanced quality. Light compression reduces by 30-50% while maintaining near-original quality.

Three levels: High Compression (smallest file, CRF 32, 500kbps video) for sharing where quality isn't critical. Medium Compression (balanced, CRF 28, 1.5Mbps video) for general use and web uploads. Light Compression (best quality, CRF 23, 4Mbps video) for professional content or archival.

Yes, compression always involves a quality tradeoff. Higher compression = smaller files but lower quality. Medium compression offers the best balance - videos look nearly identical to originals while significantly reducing file size. Use light compression when quality is paramount.

H.264 (libx264) codec with AAC audio, the most compatible format for web, mobile, and social media. H.264 provides excellent compression efficiency while maintaining broad device support across all platforms including Windows, Mac, iOS, Android, and web browsers.

While this tool focuses on file size reduction, you can use compression levels based on platform needs. High compression works for Discord or WhatsApp. Medium compression is ideal for Instagram, TikTok, Twitter. Light compression suits YouTube, LinkedIn, or professional sharing.

Processing time varies by video length, resolution, and compression level. A 1-minute 1080p video typically takes 30-90 seconds. High compression (veryslow preset) takes longer but produces smaller files. Medium and light compression are faster with good results.

Browser memory limits apply - typically 2GB for most browsers. For very large files, consider compressing on desktop software. This tool works best with videos under 500MB for smooth processing and optimal performance.

Yes! After initial page load (which downloads FFmpeg.wasm library ~30MB), compression runs entirely in your browser. No internet needed, no server uploads. Perfect for sensitive or private videos that must stay on your device.

Never. All compression happens locally using FFmpeg.wasm in your browser. Your videos never leave your device, ensuring complete privacy and security. This is a client-side tool with zero server interaction.

Yes! The tool shows side-by-side comparison of original and compressed videos. Compare file sizes, check quality, and replay sections to ensure compression meets your needs before downloading the final result.

1. Upload Video

2. Compression Level

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