Video Compressor
Compress video files in your browser — private and fast.
Drop your video here
or click to browse
Supports MP4, WebM, MOV, AVI, MKV · Max recommended: 500MB
How to Use Video Compressor
Drag and drop or click to select a video file (MP4, WebM, AVI, MOV).
Select a compression quality preset — higher quality means larger file size.
Click Compress and wait for the browser to re-encode your video.
Preview the compressed video, then download and compare the file size.
Features & Benefits
Instant Results
Real-time output as you type. No waiting, no page reloads, no server processing.
100% Private
Everything runs in your browser. Your data never leaves your device — ever.
Mobile Friendly
Fully responsive design tested on Chrome, Firefox, Safari, and Edge across all devices.
Always Free
No account, no subscription, no hidden fees. Unlimited usage, forever free.
Supported Formats
About Video Compressor
Why Compress Videos?
Video files are among the largest files most people work with. Uncompressed or poorly compressed videos cause slow uploads to social media, failed email attachments, poor streaming performance, and excessive storage consumption. Compressing videos reduces these issues while maintaining acceptable visual quality for the intended use case.
Understanding Video Compression
Video compression works by eliminating redundant data between frames. Most video frames are very similar to adjacent frames — only the changing parts need to be stored. Modern codecs like H.264 (MP4), VP8/VP9 (WebM), and H.265 (HEVC) use sophisticated algorithms to represent this motion data efficiently.
Bitrate and Quality
Video quality is primarily determined by bitrate — the amount of data per second. Higher bitrate = better quality but larger file size. Common bitrates: 1–2 Mbps for standard 720p, 2–4 Mbps for 1080p, 8–15 Mbps for 4K. For web and social media, 2–4 Mbps is usually sufficient.
Best Video Format by Use Case
- MP4 (H.264) — Universal compatibility; best for sharing and web playback
- WebM (VP9) — Open source; smaller files; best for web embedding
- MOV — Apple ecosystem; high quality; larger files
Frequently Asked Questions
No server-side limit. Practical limits depend on your browser and RAM. Files up to ~500MB typically work on modern devices. Very large files may be slow.
Some quality loss occurs with compression — that's how file size is reduced. Use higher quality presets to minimize visible loss. Always keep a copy of the original.