Lower resolution before attaching
A 1080p or 720p MP4 is usually enough for email review. Reducing resolution can dramatically shrink the file compared with the original.
Email video compression
How to Compress a Video for Email
Email attachment limits are often much smaller than modern phone or screen-recording videosLessMB can reduce video size locally and export a practical MP4 for sharing
how to compress a video for emailcompress video for emailreduce video file size for emailMP4 compressor
Use the video compressor below, then attach the optimized MP4 to your email.
Compress and convert MP4, MOV, MKV, AVI, and more locally without installing software.
Files stay on your device
Steps
Quick workflow
Use this simple browser workflow to get a smaller file while keeping the original on your device
- Select the video file.
- Use MP4 output and Standard mode.
- Lower resolution if the first result is still too large.
- Download the optimized file and attach it to your email.
What to know before you start
Keep the output compatible
MP4 is the safest format for email because it opens reliably on phones, laptops, browsers and common media players.
Use links for very large videos
If a video is still too large after compression, use a shared drive link. Compression helps, but every email provider has its own attachment limit.
FAQ
How to Compress a Video for Email FAQ
Short answers for the most common questions about this workflow and LessMB's local browser compression
No uploadFree toolBrowser-based
What video format is best for email?
MP4 is usually best because it is widely supported across devices and email clients.
Can I guarantee a video will fit email limits?
Not always. Video length, resolution and provider limits vary. Lowering resolution and bitrate gives the best chance.
Does LessMB upload email videos?
No. Compression runs locally in the browser session.