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Make a video or photo small enough to email

A bounce message after you hit Send is annoying. Choose Gmail, Outlook or a stricter 10 MB mail server, add your file, and download a copy that will go through.

  • Nothing is uploaded. Your browser does the compression, so the file stays on your device.
  • Lands under the real limit. We aim a little below it, so the upload goes through first time.
  • Fast. A 30 second 1080p clip fits into 10 MB in about two seconds on a desktop.
Where are you sending it?

Limit 25.00 MB. We aim for 24.00 MB, 1.00 MB of safety margin. Source, checked November 2026.

Sent to our servers: 0 bytes. It all happens in this tab.

How the Email (Gmail, Outlook) limit works

Email attachments are encoded for transport, which makes them roughly a third bigger than the file on your disk. A 20 MB video can become about 27 MB in the message. That is why 'under 25 MB' on your disk is not always enough.

Gmail's limit applies to the whole message, not each file. Three 9 MB attachments add up. The same holds for Outlook, and the receiving server can have a lower limit than yours, which is common at companies and schools.

For a recipient with an unknown mail server, the 10 MB preset is the safe choice. For a close colleague on Gmail, 25 MB is usually fine.

Sizes we target

  • Gmail, 25 MB: Headroom beneath Gmail's 25 MB total attachment limit. Source (checked 2026-11-09)
  • Outlook email, 20 MB: Conservative fit for common Outlook internet-email limits. Source (checked 2026-11-09)
  • Strict mail server, 10 MB: Many company and school mail servers still stop at 10 MB. Mail encoding adds about a third to attachments, so this leaves extra room. (typical size, not an official limit) Source (checked 2026-11-09)

We aim below each limit by the margin shown. Use the menu above to switch.

Tips

  • If you are sending several files, aim each one lower so the total stays under the limit.
  • For a video longer than a few minutes, consider a share link instead of an attachment. Compression has limits too.
  • Photos from a modern phone are often 4 to 8 MB each. Compress them to around 1 MB and ten fit easily.

Questions people ask

What are the Gmail and Outlook attachment limits?

Gmail allows 25 MB per message and Outlook commonly about 20 MB, according to their help pages linked above. The receiving server may enforce less.

Why was my 24 MB file rejected?

Mail encoding adds roughly 33%, so a file near the limit can exceed it once packed into a message. Aim lower, or use our strict 10 MB preset.

Does this change the file format?

Videos come out as MP4 where possible, which everyone can open. Photos come out as JPEG unless you pick WebP or PNG.

Related

Limits change. We link the official page wherever there is one, and the safety margin means a small change is unlikely to matter. Last updated 2026-11-09.