Compress MP4
Free, fast and secure — shrink your MP4 file right in your browser.
MP4
Shrink your MP4 for easy sharing and upload
Compressing MP4 re-encodes your video at the size you choose, cutting the file down dramatically so it uploads quicker, fits attachment limits and streams smoothly — while keeping it looking sharp.
How to compress MP4
- 1 Drop your MP4 file into the compressor above.
- 2 Pick a compression level and it is optimised automatically.
- 3 Download your smaller MP4 file instantly.
About MP4
MP4
MP4 video
MP4 (H.264) is the universal video container. It balances quality and file size beautifully and plays on virtually every device, browser and platform.
Strengths
- Plays almost everywhere
- Great quality-to-size ratio
- Ideal for streaming and social media
Limitations
- Lossy compression
- Less flexible than MKV for multiple tracks
- Older codecs can look dated
Best for: Sharing, streaming and uploading video anywhere with maximum compatibility.
Frequently asked questions
Upload your MP4 file above, pick a compression level and it is optimised automatically. When it is ready, download your smaller file — the whole thing takes just a few seconds in your browser.
You choose the balance between size and quality. “Light” keeps the video close to the original, while “Strong” maximises the saving. Even strong compression stays perfectly watchable.
It depends on the file and the level you pick, but savings of 40–80% are common — larger, less-optimised files shrink the most.
Yes. The compressor is free to use, with no watermark and no sign-up required.
Your files are processed securely and are never shared with anyone.