Free tool

Compress video for email under the attachment limit.

Drop the video, keep the 20 MB target, download an MP4 that attaches to any email and plays when the receiver opens it.

Compress video for email at a glance

content.win compresses big files for free, several at once, and never adds a watermark. You can name an exact size in MB and get a file that fits.

Works with
MP4, MOV, WebM and MKV.
Comes back as
MP4, MOV, WebM or MKV, at a quality preset or an exact target size in MB.
Runs
In your browser.
Limits
Up to 10 videos at once, in a browser that can play them. Free space on the device is the only other limit.
Price
Free. No account, no watermark.

How to compress a video for email

  1. Drop the video in. MP4, MOV, WebM or MKV.
  2. The target is already set to 20 MB. Leave it, or change the number if your case is different. Resolution and frame rate caps are optional.
  3. Download and send. The file lands at or under 20 MB and sends as a video, not as a document.

Attachment limits by service

Gmail
25 MB per message, all attachments combined. Above that Gmail swaps the file for a Drive link.
Outlook and Microsoft 365
20 MB on most accounts, 33 MB on some. Above the limit Outlook offers OneDrive.
Apple Mail and iCloud
20 MB in most setups, then Mail Drop takes over with a link.
Corporate mail servers
Often 10 MB. If you are sending to a company address, 10 MB is the safe target.

Questions people ask

What is the maximum video size for email?

25 MB on Gmail, 20 MB on most Outlook and Apple Mail accounts, often 10 MB on corporate servers. 20 MB is under all but the strictest.

Why does Gmail turn my video into a Drive link?

Because the attachment is over 25 MB. Under the limit it attaches directly and the receiver gets the file itself.

How long a video fits in 20 MB?

A minute and a half at good 1080p, four to five minutes at 720p. Cap the resolution for long clips.

Will the receiver be able to play it?

Yes. The MP4 uses H.264 video, which every phone, Mac and Windows PC plays.

Can I send a bigger file some other way?

Yes, through a Drive, Dropbox or WeTransfer link, which is what the mail apps offer when you go over. Compressing avoids the extra step.

Is there a watermark?

No.