Compress Video
Starting compression engine...
Click or drag to upload video
Supports MP4, WebM, MOV, and more (max 500MB)
Frequently Asked Questions
Is this tool free to use?
Yes — our core compression tools are completely free with no watermarks or hidden fees. Because all processing runs on your own device, we do not incur the heavy server costs that most online compressors pass on to users. We may introduce optional premium features later for power users who want extras like larger batch sizes.
Do you store my videos on your servers?
Never. This is the key difference between us and services like FreeConvert or 123apps: your files are never uploaded anywhere. All processing happens entirely within your browser using WebAssembly technology. Your video data stays in your device memory and is discarded when you close the tab.
Which video formats are supported?
You can compress most common video formats including MP4, WebM, MOV, AVI, and MKV. The default output is an optimized MP4 (H.264), which offers the best compatibility across devices, browsers, and social media platforms. You can also choose WebM for smaller web-optimized files, or MKV for flexible archiving.
What is the maximum file size I can compress?
That depends on your device. Since compression runs locally in your browser, the practical limit is determined by your system memory rather than an upload quota. Most modern computers handle files up to 500MB comfortably, and many can go higher. We recommend using a desktop browser for the best experience with large files.
How much smaller will my video get?
Results vary based on the source material and settings. Typical reductions with the Balanced preset land in the 40–70% range. Combining compression with resolution downscaling can produce even smaller files. The tool shows your exact before-and-after sizes once processing finishes.
What is CRF and what value should I use?
CRF (Constant Rate Factor) controls the quality-versus-size tradeoff. It ranges from 0 (lossless, huge file) to 51 (lowest quality, tiny file). For most use cases, 23–28 is the sweet spot. Our Balanced preset uses CRF 28, which is a strong default for sharing.
Will I lose video quality?
All compression introduces some loss, but with the Balanced setting the difference is usually hard to notice. For more demanding use cases, choose High Quality or use a lower custom CRF. You can preview the compressed video before downloading it.
Can I compress for Discord, email, or WhatsApp?
Yes — use Target Size mode to aim for a specific file limit. Common targets include 25MB for email and Discord uploads or lower limits for messaging apps. The tool adjusts encoding settings to help you hit that target size.
Does this work on mobile?
It works in modern mobile browsers such as Chrome and Safari. Compression is CPU-intensive, so performance depends heavily on your device. Newer phones handle it much better than older ones, while desktops and laptops still offer the fastest experience.
How long does compression take?
Processing time depends on video length, resolution, bitrate, and your device speed. A short 1080p clip on a modern laptop often finishes in under a minute. Slower settings and larger files naturally take longer because everything runs locally on your hardware.
Can I remove audio to make the file smaller?
Yes — the Remove Audio option helps when you only need the visuals. That can reduce file size further, especially for clips with high-bitrate audio tracks.
Is it safe for sensitive or private videos?
Yes. This tool is designed for privacy-first video compression. The processing engine runs in your browser, and your files are not sent to a remote server for conversion or storage.