Compress video online. Reduce file size.
Make MP4 files smaller for WhatsApp, Discord, email, and web sharing. Pick a quality preset and download the compressed video locally.
Your file stays in this browser tab.
Reduce file size by re-encoding at a lower bitrate.
Output is always MP4 for maximum compatibility.
Need server-side compression?
This tool compresses one file at a time. Cutsio helps teams search, organize, review, and hand off their video library before finishing in the NLE.
Common questions.
How do I compress a video for WhatsApp, Discord, or email?
Choose the 480p preset when file size matters most, or use 720p for a sharper result. The exported MP4 is easier to share through messaging apps, email, and the web.
Is my video uploaded anywhere?
No. The compression runs entirely in your browser tab. Your file never touches a server.
How much will the file size be reduced?
That depends on the source bitrate and the quality preset you choose. 480p typically reduces to 10–20% of the original size, while 1080p is closer to 30–50% for most videos.
What quality preset should I use?
1080p preserves near-original quality. 720p is a good balance of quality and size for most uses. 480p is best for email, messaging, or archival when file size matters most.
What formats are supported?
MP4, MOV, WebM, MKV, and most common video formats. The output is always MP4 with H.264 video and AAC audio for maximum compatibility.