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Runs on your device · Free · No account

Video Size Reducer

Tell the tool how big the file may be, and it works out the best picture that fits. Ideal when an app or form says "file too large".

Using the Video Size Reducer

1

Set a size limit

Choose a preset or type your own maximum in megabytes. Leave resolution on automatic unless you need a fixed one.

2

Pick the video

Select an MP4, MOV, WebM or MKV file. Processing starts on your device right away.

3

Share the small file

See the old and new size side by side and save the MP4.

Common size limits

Limits change over time; aim a little below them so the file always fits.

WhereUsual limitPreset to use
Discord (free)10 MBUnder 10 MB
Email attachments20 to 25 MBUnder 25 MB
Larger chat uploadsabout 50 MBUnder 50 MB
Web forms, portalsoften 100 MBUnder 100 MB

Video Size Reducer Questions & Answers

How is the quality decided?
The tool divides the size you allow by the length of the video. Short clips keep a high resolution; long ones get scaled down to fit.
Why remove the sound?
Silent clips such as screen recordings do not need an audio track, and leaving it out frees space for a sharper picture.
It is slow on my phone. Why?
Video encoding is heavy work. Computers finish much faster, especially with long or 4K videos.
Is the original changed?
No. A new, smaller copy is created; your original file stays untouched.

How Target-Size Video Compression Works

A video’s size comes from two things: how many bits are spent per second (the bitrate) and how many seconds it lasts. To reduce video size to an exact target, the tool calculates the bitrate that fits, sets a little aside for sound, and encodes the picture with the rest.

Resolution follows the budget

A 20 second clip can stay in Full HD under 10 MB. A 5 minute clip cannot, so automatic mode lowers the resolution to keep the picture clean rather than blocky.

Tips

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