File Video Compressor — Free Online Tool
Compress any video file online for free — MP4, MOV, AVI, MKV, WebM and more. Our browser-based file video compressor reduces size by up to 90% without uploads or sign-ups. GPU-accelerated, 100% private, unlimited use.
Drop your video here or click to browse
Supports MP4, WebM, MOV, MKV, AVI and 10+ more formats · Max 2GB
What is a File Video Compressor?
A file video compressor is a tool that reduces the file size of video files. It re-encodes the video using more efficient codecs and settings, removing redundant data while preserving visual quality. Our file video compressor uses FFmpeg WebAssembly to process files entirely in your browser — no uploads, complete privacy. It supports all major video formats and offers presets for different use cases, from email sharing to archival storage.
How to Compress Video Files
Compressing video files is straightforward: 1) Select your video file (drag and drop or click to browse). 2) Choose a compression preset or custom settings. 3) Click Compress. 4) Download the compressed file. Our presets make it easy: 'Smallest File' for maximum compression (CRF 32, 720p), 'Best Balance' for recommended quality (CRF 26, 1080p), 'Best Quality' for near-lossless (CRF 20, original resolution). For specific size targets, use Auto mode with target file size.
Video File Compression Techniques
Compression uses several techniques: 1) Codec efficiency: H.264 and VP8 are modern codecs that achieve high compression. 2) CRF (Constant Rate Factor): Controls quality vs size — lower values = better quality, larger files. 3) Resolution reduction: 4K to 1080p saves 60-70% with minimal visual impact. 4) Frame rate reduction: 60fps to 30fps saves 40%. 5) Audio bitrate: 320kbps to 128kbps saves 5-10%. 6) Trimming: Removing unnecessary footage reduces processing time and file size. Our compressor applies these techniques automatically based on your chosen preset.
Choosing the Right Compression Level
For email (25MB limit): Use Auto mode with 25MB target, or 'Smallest File' preset. For messaging apps: Use Auto mode with appropriate target (8MB Discord, 16MB WhatsApp). For social media: Use 'Best Balance' preset (CRF 26, 1080p). For web embedding: Use CRF 26-28, 1080p, 30fps. For storage: Use 'Best Balance' or 'Smallest File'. For archival: Use 'Best Quality' preset (CRF 20). For client deliverables: Use 'Best Quality' to maintain professional quality. The right level depends on your use case — when in doubt, 'Best Balance' works for most scenarios.
Frequently Asked Questions
How do I compress a video file?
Drag and drop your video file into our compressor, choose a preset, and click Compress. Your compressed file downloads instantly. All processing happens in your browser — no uploads required.
What video files can I compress?
We support MP4, MOV, AVI, MKV, WebM, WMV, FLV, M4V, OGV, 3GP, MPEG, and TS as input. Output is MP4 (H.264) or WebM (VP8) for maximum compatibility.
How much can I compress a video file?
Video files can be compressed by 60-90%. A 100MB file typically becomes 10-40MB. Use 'Smallest File' preset for maximum compression, or Auto mode for target size.
Is this file video compressor free?
Yes, completely free with no sign-up, no watermarks, no file limits. All processing happens in your browser using WebAssembly, ensuring complete privacy.
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