Compress video to 16 MB
16 MB is the sweet spot: small enough to fly over mobile data, big enough for good-looking short clips. Drop your video in, get back a file guaranteed just under 16 MB.
Drop your video here
or
MP4, MOV, WebM… — processed 100% on your device
Target size
Planned output:
ð¦ Large file: encoding several hundred MB in your browser can take a very long time, and phones may run out of memory. Desktop Chrome recommended.
Loading encoder…
🔒 Your video never leaves your device. No upload, no signup, no watermark.
The 16 MB trick, explained
16 MB became famous as WhatsApp's classic target — and it stuck around because the math is genuinely good. It's small enough to send and download quickly on mobile data, yet large enough for clean-looking short clips. The pro move: compress to exactly 16 MB here, then attach the result as a document — your recipient gets the file untouched, at the quality you chose, instead of whatever the chat app's recompressor decides.
Beyond WhatsApp, 16 MB fits anywhere with a “must be under 16 MB” rule — and it's a kinder target than 8 MB for clips over a minute. See also compress video for WhatsApp.
Need a different target? Compress to 8 MB · Compress to 20 MB · Compress for WhatsApp
FAQ
How do I compress a video to exactly 16 MB?
Select the 16 MB target above and hit Compress. VidSizer measures your clip's duration, computes the precise bitrate, and re-encodes once more until the output is provably under 16 MB.
Why 16 MB?
It's the classic WhatsApp-era sweet spot: fast on mobile data, good quality for short clips. And the document-send trick preserves your exact encode end to end.
Is my video uploaded anywhere?
No. Everything runs in your browser. No upload, no account, no watermark.