How do I compress an MP4 file?

Drop the MP4 onto the compressor above, keep Balanced or pick another level, and click Compress. Download the smaller MP4 when it's done; it usually takes a few seconds.

Does compressing MP4 reduce quality?

A little, by design: MP4 is a lossy format. Balanced is tuned to look the same for most uses; choose Light if you want to stay closer to the original.

How much smaller will my MP4 get?

Phone recordings often shrink by half or more on Balanced, and screen recordings with little motion even more. Videos that were already compressed for streaming shrink less.

Can I compress MP4 to a specific size?

Yes. Set a target size in the compressor, or a percentage to reduce by, and the file is compressed to land at or just under it. Common sizes like 5 MB, 10 MB, 25 MB or 50 MB are listed on this page with the target preset.

Is it safe to compress MP4 files here?

Yes. MP4 files are compressed inside your browser with WebAssembly and never uploaded to a server.

Is the MP4 compressor free?

Yes. Compression is free with no watermark and no sign-up, within the same daily allowance as conversions.

MP4→smaller MP4→MP3 JPG→smaller MP4→WebP PNG→smaller MP4→MOV MP3→smaller MP4→GIF PDF→smaller MP4→WAV WebP→smaller MP4→WebM HEIC→smaller MP4→MKV DOCX→smaller MP4→M4A GIF→smaller MP4→AVI SVG→smaller MP4→FLAC MOV→smaller MP4→AAC AVIF→smaller MP4→OGG M4A→smaller MP4→WMV MP4→Opus WebM→smaller MP4→M4V MP4→FLV MKV→smaller MP4→MPEG MP4→3GP XLSX→smaller MP4→WMA MP4→TS EPUB→smaller MP4→MPG MP4→AIFF AVI→smaller MP4→AMR MP4→VOB FLAC→smaller PNG→JPG JPG→PNG PPTX→smaller PNG→WebP JPG→WebP AAC→smaller WebP→PNG WebP→JPG ZIP→smaller HEIC→PNG HEIC→JPG TIFF→smaller PNG→JPEG JPG→JPEG OGG→smaller JPEG→PNG JPEG→JPG Opus→smaller PNG→PDF JPG→PDF 7Z→smaller PDF→PNG PDF→JPG ODT→smaller HEIC→WebP PDF→DOCX TAR.GZ→smaller DOCX→PDF JPEG→WebP ODS→smaller WebP→JPEG PNG→GIF ODP→smaller JPG→GIF GIF→PNG TAR.BZ2→smaller GIF→JPG MOV→MP4 TAR.XZ→smaller WebP→PDF HEIC→JPEG WebP→GIF GIF→WebP HEIC→PDF MP3→WAV WAV→MP3 JPEG→PDF PDF→JPEG SVG→PNG SVG→JPG HEIC→GIF MOV→MP3 GIF→MP4 JPEG→GIF GIF→JPEG PNG→AVIF JPG→AVIF AVIF→PNG AVIF→JPG MP3→M4A M4A→MP3 GIF→PDF SVG→PDF PNG→SVG JPG→SVG PDF→SVG SVG→WebP MOV→WebP WebM→MP4 WebP→AVIF AVIF→WebP WebP→SVG SVG→JPEG MKV→MP4 HEIC→AVIF JPEG→AVIF AVIF→JPEG JPEG→SVG MOV→GIF GIF→MOV WebM→MP3 AVIF→PDF MP3→FLAC FLAC→MP3 AVI→MP4 MKV→MP3 GIF→AVIF AVIF→GIF SVG→GIF GIF→SVG WebM→WebP MOV→WAV XLSX→PDF CSV→PDF EPUB→PDF PDF→EPUB MOV→WebM WebM→MOV MKV→WebP PNG→ICO JPG→ICO ICO→PNG ICO→JPG MP3→AAC WAV→M4A AAC→MP3 M4A→WAV AVI→MP3 MOV→MKV MKV→MOV MOV→M4A DOCX→EPUB EPUB→DOCX CSV→DOCX PDF→TXT DOC→PDF TXT→PDF

Compress MP4

Make MP4 files smaller without visible quality loss. Free and private: compressed in your browser on computers; on phones, in our fast cloud and deleted automatically.

In your browser (fast cloud on phones)
Same format, smaller file
Batch & ZIP download

How to compress MP4

1
Add your MP4 files
Drag and drop MP4 files onto the compressor, paste them, or click to browse. You can add several at once.
2
Pick a level or a target
Balanced is selected and suits most files. Choose Light to stay closer to the original or Strong for the smallest file, or set a target size or a percentage to reduce by.
3
Compress
Click Compress. Your MP4 files are processed right in your browser, usually in seconds.
4
Download
Download each smaller MP4, or everything at once as a ZIP.

What compression does to MP4

LossyIn your browser

Re-encodes the video at a lower bitrate (and resolution on Strong); audio is re-encoded to AAC.

Light: Near-lossless: re-encodes conservatively and keeps the full resolution.
BalancedDefault: The default: looks the same for most uses, and typically 40–70% smaller.
Strong: Smallest file: lower quality, and large videos are downscaled.

Common sizes

The compressor above takes any target size, or a percentage to reduce by. These pages preset the sizes people ask for most, for upload forms, email and chat limits.

MP4 · MPEG-4 Part 14

MP4 is the most widely supported video container. It usually holds H.264 or H.265 video with AAC audio and plays on every device and platform.

Type: Video
Extension: .mp4
MIME: video/mp4
Best for: sharing, streaming and uploading video anywhere

Lossy compressionOpen standard

All MP4 conversions →

Compress other videos

All videos →

Compressing MP4: frequently asked questions

Free, private and in your browser

Smaller MP4 files, in seconds.

No sign-up, no watermark, no upload. Drop a file and get it back lighter.

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Most conversions never leave your device
Cloud files deleted automatically
No watermarks