How to shrink a video enough to send by email

8 August 2026 · 4 min read

Gmail allows 25 MB per message, Outlook 20 MB, and both count encoding overhead, so the real ceiling is lower. A modern phone records roughly 1 MB per second at 1080p, which means a half minute clip already will not send. The fix is re-encoding, and it costs far less quality than people expect.

Why re-encoding shrinks video so much

Phones encode video in real time with settings chosen for speed and battery, not efficiency. A slower software encode of the same footage typically produces a file half the size at the same visible quality. Add a modest resolution reduction and 80 to 90 percent of the file disappears.

The steps

  1. Open the video converter and drop your clip in. MOV, MP4, WEBM, AVI and MKV all work.
  2. Choose MP4 as the output. It plays on anything the recipient might own.
  3. Set quality to about 55 percent and scale to 50 percent for a 4K source, or leave scale at 100 percent for 720p sources.
  4. Convert and check the size. A 60 MB clip typically lands between 6 and 12 MB.
Compress a video to MP4

If it is still over the limit

A note on quality anxiety

People often refuse to compress because they fear ruining the video. Keep the original on your phone. The compressed copy is just the delivery version, the same way a printed photo is not your negative. Nothing about compressing a copy touches the original file.