Compress Video Online — Shrink File Size Free

Reduce video file size while keeping great quality. Choose a compression level and export smaller MP4s in your browser — no upload, no watermark, fully private.

MotionHarborFreePrivate

Supported formats

Input:MP4MOVWebMMKVAVI

Features

Quality presets

Pick low, medium, or high quality to balance file size against clarity.

Efficient H.264

We re-encode with a modern codec so you get smaller files at the same visual quality.

Private by design

Compression runs on your device — large personal videos never get uploaded.

How to use

  1. 1

    Upload a video

    Drag your video into the upload area or click to browse for a file.

  2. 2

    Pick a quality level

    Choose how aggressively to compress. Medium is a great default for most videos.

  3. 3

    Compress and download

    Press Process to compress locally, then download your smaller video file.

Smaller files, same great video

Oversized videos are hard to email, slow to upload, and expensive to store. Compressing re-encodes your footage with an efficient codec, squeezing out redundant data while keeping the picture you care about.

Start with the medium preset — it's the sweet spot for sharing and archiving. If you need the smallest possible file for a quick send, drop to low; if you're keeping a master copy, choose high. Every export runs locally, so you can try each level without limits.

Frequently asked questions

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Compress Video Online — Shrink File Size Free

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