What is CompressMP4?
CompressMP4 is a free online video compressor that makes MP4, M4V, MOV, WebM, and MKV files smaller directly in your browser. It works without uploading your video, so private clips stay on your device. You can choose a target file size in MB or compress by percentage, then download the new MP4 right away. Itโs built for quick tasks like email attachments, chat messages, social uploads, school forms, and storage limits. The tool uses local browser processing, supports offline reuse after the first visit, and creates broadly compatible H.264/AAC MP4 output. Simple, private, and easy to use.
Key features
- Compress videos locally without uploading files.
- Choose output by percentage or target megabytes.
- Download a smaller MP4 immediately after processing.
- Works for email, chat, social, and upload limits.
- Supports offline reuse after the first visit.
- Creates H.264 and AAC MP4 output.
Category
Website
Founder
chaozi zhang
