Video Compressor
PopularNewReduce video file size while preserving quality - compress MP4, WebM, and MOV files right in your browser.
Your files are processed entirely in your browser. Nothing is uploaded to any server, and your documents never leave your device.
What is Video Compressor?
A video compressor re-encodes your video at a more efficient quality setting so the file takes up less space. This tool runs FFmpeg - the industry-standard video engine - directly in your browser through WebAssembly. You choose a quality level, the video is re-encoded on your own device, and the smaller file is ready to download. Nothing is uploaded, so even private recordings stay completely on your machine.
Why use Nuo Tools's Video Compressor?
How to use Video Compressor
Drop a video file into the tool or click to browse for one.
Choose a quality level - higher quality keeps more detail, lower quality shrinks the file more.
Click Compress and watch the progress bar while the video is re-encoded locally.
Download your compressed MP4 when processing finishes.
Frequently asked questions
Is my video uploaded to a server?+
No. The compression runs entirely in your browser using FFmpeg compiled to WebAssembly. Your video never leaves your device, which makes the tool safe for personal and confidential footage.
How much smaller will my video get?+
It depends on the source. Videos straight from a phone or screen recorder often shrink by 50-80% at the default quality because they were encoded quickly at high bitrates. Already-compressed videos will shrink less.
Why does the first compression take a moment to start?+
The tool downloads the FFmpeg engine (about 31 MB) the first time you use any video tool in a session. After that one-time load, processing starts immediately.
Will compression reduce my video quality?+
Compression always trades some quality for size, but at the default setting the difference is barely visible for most footage. If the result looks too soft, re-run with a higher quality setting.
How large a video can I compress?+
Processing happens in your browser's memory, so the practical limit depends on your device. Clips up to a few hundred megabytes work well on most computers; very long or 4K videos may be slow or run out of memory.
When to use this tool
- →Shrinking a screen recording so it fits an email or chat attachment limit
- →Reducing phone videos before backing them up to limited cloud storage
- →Preparing clips for a website where smaller files mean faster loading
- →Compressing lecture or meeting recordings for easier sharing
- →Fitting a video under a messaging app or forum upload limit