Choose your video
Drop one file or select it from your device. The tool reads the actual video tracks, not just the file extension.
Video Compressor
Make your video smaller.
Choose a video, pick a quality, and download a checked MP4. Everything happens on your device.
Drop a video here
MP4, MOV, M4V, or WebM · one video at a time
Short clips work best. File limits depend on your device and the available encoder.Your video
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Compression
Recommended for everyday sharing: clear video and a smaller file.
Balanced · MP4
The final file size appears after compression.
The browser checks which local encoder can handle this video. The compatibility program loads only when needed.
Preparing video…
Keep this tab open.
Working…
Checked and ready
Ready to download
- Original
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- Compressed
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How to compress a video
Start with Balanced
Keep Auto picture size and sound on for a first try. Open More options only if you need a smaller picture or an approximate file-size target.
Preview and download
Check the compressed video and its real file size. Download the MP4 before closing the page; your video is not saved to browser storage.
Useful answers before you compress
Will compressing a video reduce its quality?
Usually. Better quality keeps more detail, Balanced is the recommended everyday choice, and Smaller file can soften fine texture or fast movement. Watch the result before deleting your original.
How do I shrink a video for email?
Start with Balanced. If you need to aim for an attachment limit, open More options, choose 720p or 480p, and enter a size in MB. The result is approximate; check the actual download size before attaching it.
Are my videos uploaded?
No. Reading, decoding, encoding, and creating the MP4 all happen in this browser. No file content, frames, sound, or original filename is sent to a conversion service. The website still requests its program files and may generate website analytics traffic; see our privacy policy.
Why is compression slower on my phone?
Video work uses your device’s processing power and memory. The tool checks whether the browser can read and encode the selected clip; if not, it uses a local compatibility encoder. Phones have lower file limits. Keep this tab open and try a shorter clip or 720p.
Which formats are supported?
Supported MP4, MOV, M4V, and WebM inputs become H.264/AAC MP4 output. A familiar extension is not a guarantee: unusual codecs, damaged files, HDR, and protected video can be unsupported. A video with no sound stays silent.
What if the result is larger?
Some videos are already compressed well. The result will say No size reduction, with its real size. Try Smaller file or a lower picture size, or keep the original. Smaller is not guaranteed for every clip.
How large a video can I use?
Supported computers can open files up to 500 MB; compatibility processing is limited to 200 MB. Phones and devices with little memory use 100 MB input and 75 MB compatibility limits. Results have separate memory limits. These are safeguards, not a promise that every device can finish every file.
What is remembered?
Only your quality, picture-size, and sound preferences are remembered on this device. Reset saved settings clears those choices after confirmation. Your video, target size, edits, and results are not saved.
Why is there a compatibility download?
Some clips need the self-hosted 31 MB compatibility encoder. It loads only when that path is needed. Static program files can be cached by the browser; your video is never added to that cache.
Which open-source software does this use?
The browser media path uses Mediabunny 1.61.4 (license and source). The compatibility path uses FFmpeg (licenses and source information). Both run on your device.