Compress video for email
Gmail caps attachments at 25 MB. Outlook is 20 MB. Most corporate mail servers are stricter still — often 10 MB. Pick a target, drop a video, get back an MP4 that fits. The video never leaves your browser.
drop a video here
or click to choose
Email attachment limits by provider
- Gmail: 25 MB. Larger files auto-upload to Drive with a share link.
- Outlook.com: 20 MB. OneDrive link for bigger.
- Yahoo Mail: 25 MB.
- iCloud Mail: 20 MB. Mail Drop for larger, up to 5 GB.
- Office 365 (corporate): usually 20–25 MB but IT can lower to 10 MB. 10 MB is the safe universal target for business email.
- Exchange (on-prem): varies wildly. Default 10 MB. Some orgs go to 25 or 50.
Why compress instead of using Google Drive / OneDrive?
Three reasons:
- Confidentiality. Drive links are sharable URLs. If the link leaks (a forwarded thread, a CC reply), the file is reachable by anyone with the URL. An attachment stays inside the email infrastructure.
- Archival. Drive files can be deleted, expired, or moved. The recipient's archived email keeps the attached file forever.
- Recipient-side annoyance. Some recipients can't preview Drive links from their email client — another tab, another login. An MP4 attachment plays inline.
For confidential email (HR, legal, medical, internal)
This page processes your video locally. Generic compressor sites send your file to their server, then return a download link — meaning a third party briefly holds a copy of footage that may be sensitive. Here, the bytes stay in your browser tab.
How big can my video be at 720p / 25 MB?
Roughly 1.5 minutes of motion-heavy footage at 720p hits 25 MB cleanly. For 3+ minutes, drop to 480p. For 5+ minutes, consider trimming with our trim tool first — a 10-minute video at 25 MB will look like 1990s VCD no matter what tool you use.
FAQ
The recipient's inbox bounced my message even though it was under 25 MB. Why?
Email size includes encoding overhead. A 24.9 MB MP4 becomes ~33 MB once base64-encoded for SMTP. Recipient servers often cap at 30 or 35 MB total message size. Target 18–20 MB for safety on strict corporate inboxes.
What format is the output?
MP4 with H.264 video and AAC audio. Plays in Outlook, Apple Mail, Gmail web, every mobile mail client.
Will it lose a lot of quality?
Depends on length. A 30-second clip at 25 MB / 720p looks great. A 5-minute clip at 25 MB is rough. We have to choose between size and clarity; we can't beat physics.
Does this work on Outlook for Mac / Outlook web?
The compression happens in your browser regardless of which mail client you use. Just attach the resulting MP4.
Does the file get uploaded anywhere?
No. Open the page, disconnect, drop a video — it still compresses.