Skip to content
filetidy
MP4/MOV/WebM… → MP4

Compress a video for email

Make a video small enough to attach to an email in Gmail, Outlook or any other mail app. Nothing is uploaded, and there’s no account, watermark or limit.

  1. 1. Drop files
  2. 2. Adjust
  3. 3. Download
  • No upload. Processing happens on your device.
  • No limits. As many files as you like, free.
  • No watermark. Your files stay exactly yours.

How to compress a video for email with filetidy

  1. 1

    Add the video you want to send by dropping it on the page or tapping to choose it.

  2. 2

    Under “Target size”, choose “Gmail (18 MB)”, “Outlook (14 MB)” or “Any inbox (10 MB)” depending on where it's going.

  3. 3

    Keep “Max resolution” on Auto, or pick 720p for a presentation or 480p for a quick preview. Tick “Remove audio” if sound isn't needed.

  4. 4

    Press “Compress”, Download the MP4, and attach it to your message as usual.

Email attachment size limits

Gmail lets you send up to 25 MB of attachments per message, and Outlook.com allows 20 MB. Anything larger is turned into a cloud link (Google Drive or OneDrive) instead of a real attachment. Company mail servers set their own limits, and some reject messages above about 10 MB.

There's a catch: email sends attachments as base64 text, which makes them roughly a third larger in transit, and some servers count that encoded size. An 18 MB video therefore becomes about 24 MB on the wire. That's why the Gmail preset aims at 18 MB and the Outlook preset at 14 MB rather than the advertised numbers.

Video attachments are also downloaded by every recipient, sometimes on a phone. A compact MP4 is quicker to open and plays in Gmail, Outlook and Apple Mail previews without extra software.

Gmail
25 MB per message; larger files become Google Drive links
Outlook.com
20 MB per message; larger files can go through OneDrive
Encoding overhead
Base64 adds about 33% in transit
Safe presets
18 MB for Gmail, 14 MB for Outlook, 10 MB for any inbox
Several videos
The limit covers all attachments in one message combined

Other ways to do it

Mac

On Mac: send large videos with Mail Drop

  1. In the Mail app, attach the video to a new message as usual.
  2. When the attachment is too large, Mail offers to send it with Mail Drop. Accept it.
  3. The recipient gets a download link. Mail Drop handles attachments up to 5 GB, and the link expires after 30 days.

Mail Drop requires iCloud. The video is uploaded to Apple's servers, unlike compressing it here.

iPhone & iPad

On iPhone: Mail Drop from the Mail app

  1. Write a new message in Mail and attach the video from Photos or Files.
  2. Tap Send. If the video is too large, choose Use Mail Drop.
  3. The video is shared as an iCloud link instead of an attachment.

Windows

On Windows with Outlook: share a OneDrive link

  1. In Outlook, choose Attach file and select the video.
  2. If the video is over the limit, Outlook offers to upload it to OneDrive and share it as a link.
  3. Check the link's permissions so the recipient can open it.

Android

On Android with Gmail: attach or link from Drive

  1. In the Gmail app, write a message and tap the paperclip, then Attach file.
  2. If the video is larger than 25 MB, Gmail uploads it to Google Drive and inserts a link instead.
  3. To keep it as a real attachment, compress it first so it stays under the limit.

Attach the video or send a link?

An attachment is self-contained: it arrives with the message, works offline, doesn't expire and doesn't require the recipient to have an account anywhere. That makes it the better choice for job applications, support tickets, school assignments and anything that should be archived with the email.

A cloud link has no practical size limit and keeps full quality, but the file sits on someone's servers, links can expire or require sign-in, and corporate filters sometimes block them.

For clips under a few minutes, compressing to fit is usually the cleanest solution. For long recordings such as full meetings, a link is more practical.

If you're sending several videos, the limit applies to the whole message: two clips for Gmail should each target about 9 MB, or go in separate emails.

Frequently asked questions

What is the largest video I can attach in Gmail?

Gmail allows 25 MB of attachments per message. Because attachments are encoded during sending, aim for about 18 MB of video, which is what the Gmail preset does. Larger files are offered as a Google Drive link instead.

And in Outlook?

Outlook.com allows 20 MB per message, so the Outlook preset targets 14 MB. If you use Outlook with a work or school account, your organization's administrator sets the limit, which can be lower or higher.

Why did my email bounce even though the file was under 25 MB?

The recipient's server may accept less than yours sends, or it counts the encoded size, which is about a third larger than the file. Try the “Any inbox (10 MB)” preset for addresses at companies, schools or government offices.

Will the recipient be able to play the video?

Yes. The output is an MP4 with H.264 video and AAC audio, which plays on Windows, Mac, iPhone and Android without extra apps.

How long can a video be for an 18 MB attachment?

About one minute at 720p or two to three minutes at 480p. A screen recording with little movement can be longer; if the file is too long for the size, the estimate shows a warning before you start.

Is it safe to compress confidential videos here?

Yes. The video is processed by your browser on your device and is never uploaded, which is safer than sharing it through a link stored on a server.

Last updated October 28, 2026

↑ ↓ to move · Enter to open · Esc to close