As of November 2026, personal Gmail accounts allow 25 MB of attachments and Outlook allows 20 MB for most personal accounts; work email is often 10 MB. A video grows by about a third when it’s attached, so pick Under 18 MB for Gmail and Under 10 MB for Outlook or work email.
Choose one video, up to 10 minutes and about 2 GB. We check the finished file and try once more if needed. If it’s still too big, you’ll see its size before you download.
Also: Compress Video: every size
How to compress a video for email
On iPhone
- Open this page in Safari.
- Tap Add Video and choose the video from Photos.
- Under 18 MB is already chosen; choose Under 10 MB for Outlook or work email. Tap Compress Video.
- Tap Save or Share, then Save Video to put it in Photos.
- Attach the saved video to your email.
On Android
- Open this page in Chrome.
- Tap Add Video and pick the video.
- Pick a size and tap Compress Video.
- Tap Save or Share, or Download file to keep it in your downloads.
- Attach the saved video to your email.
On a computer
- Open this page in Chrome, Edge, Firefox or Safari.
- Click Add Video, or drag the video onto the page.
- Pick a size, click Compress Video, then Download Video, and attach the file to your email.
Questions
How big can an email attachment be?
As of November 2026: personal Gmail allows 25 MB (Gmail Help). Outlook allows 20 MB for internet email accounts and, by default, 10 MB for Exchange work accounts (Microsoft Learn). Other services differ, and work email may be set lower.
Which size should I pick?
Under 18 MB for Gmail. Under 10 MB for Outlook, work email or if you’re not sure.
Why not compress to exactly 25 MB?
A video grows by about a third when it’s attached to an email, so a 25 MB file won’t fit in a 25 MB limit.
What happens if my video is still too big for Gmail?
Gmail Help says it then adds the file as a Google Drive link instead of attaching it.
How long a video fits?
At normal quality, about 6 minutes fits under 18 MB, and about 3½ minutes under 10 MB. Longer videos get a Make it fit anyway (lower quality) button, or you can trim the video first.
Does Compress Video work on iPhone and Android?
Yes, in Safari on iPhone and iPad and in Chrome on Android, kept up to date. iPhones need iOS 26 or later. If your phone or browser can’t do a video, you’ll see a message instead of a broken file.
Is my video uploaded?
No. Your video is made on your phone or computer and never leaves it, so a big video doesn’t need a fast connection. We only collect anonymous usage counts and error reports, listed on the privacy page.
