Is this an MP4 compressor or a full video converter?

Both. It is primarily an MP4 compressor / video compressor that re-encodes footage to a smaller MP4. It also acts as a simple video converter when your source is MOV, M4V, or WebM and you need an MP4 download.

Will compressing reduce video quality?

Lower quality presets use a smaller bitrate and may downscale resolution, which reduces file size and can soften detail. Start with Balanced and move to Small or Max compress only if you need a much smaller file.

Do I upload my video to a server?

No. Compression runs in your browser. Your file stays on your device during processing.

What formats can I compress?

Upload MP4, MOV, M4V, or WebM. The export is always a compressed MP4 suitable for social platforms.

Can I compress video for Instagram Reels or TikTok?

Yes. Use Balanced or Small with 1080p or 720p max for a lighter upload that still looks good on mobile feeds.

Video toolFree in your browser

MP4 CompressorCompress & Convert Video Online Free

Shrink large clips with a free MP4 compressor that also works as a video compressor and lightweight video converter.

No account
Private — files stay on your device
Free to use

Upload your video (MP4, MOV, M4V, or WebM).
Pick a compression quality: high, balanced, small file, or max compress.
Optionally cap resolution at 1080p, 720p, or 480p to reduce size further.

Compress MP4 and other videos in your browser. Pick quality and resolution, then export a smaller file.

Compression quality

High qualityBest detail · larger fileBalancedRecommended for ReelsSmall fileStronger MP4 compressionMax compressSmallest size · lower quality

Max resolution

Original1080p max720p max480p max

📹 Drag & drop a video or click to upload

MP4 compressor · MOV, M4V, WebM supported

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