Video file size reducer
Reduce video file size without uploading it.
Choose a video file and create a smaller MP4 in your browser. This page focuses on file-size reduction, not cloud conversion.
Reduce video file size
Lower resolution and compression quality for a smaller MP4.
Your selected video is processed in this browser tab. It is not uploaded to a conversion server.
Ready.
File-size reduction means compression
Video file size depends on duration, resolution, frame rate, motion, and bitrate. This tool reduces size by creating a new MP4 with smaller encoding settings.
Best settings and limits
Best first try
Start with Balanced and 720p. Use Smallest file and 480p when the output must be much smaller.
When this may fail
Exact output size cannot be guaranteed. Long videos and high-motion footage need more data to stay watchable.
Privacy boundary
The selected video file stays on your device while the tool creates the output.
Frequently asked questions
Is reducing video file size the same as compression?
Yes. This page uses compression settings to create a smaller video file.
Will my video be uploaded?
No. The selected file is processed locally in your browser tab.
Why is the output still large?
The source may be long, high resolution, or full of motion. Trim or lower resolution for a smaller result.