How to compress a video for email on a Mac
Use a tool that compresses to a target size rather than a quality slider. OneMacTools' Compress Video to Size takes the limit (like 25 MB for email) and works out the settings, keeping the video as sharp as that size allows.
Steps
- Open OneMacTools › Compress Video to Size (or right-click the video in Finder › Quick Actions › OMT: Compress Video to 25 MB).
- Choose the target: 25 MB for email, or the limit of the app you're sending to.
- Click Compress. The result lands in Downloads › OneMacTools.
If it's still too big
Long videos can't look good at 25 MB. Trim the part you need first, lower the resolution to 720p, or share a link instead.
Do it with OneMacTools
Questions
What's the attachment limit for Gmail and Outlook?
About 25 MB for Gmail and 20–25 MB for Outlook, including the email itself, so aim a little under.
Does compressing reduce quality?
Some, because the file has to be smaller. Compressing to a size spends that size as well as possible.
