How to compress a video to email it
- Drop your video above — it's processed on your device, not uploaded.
- Choose Email / Gmail 25 MB, or type a custom size (20 MB for Outlook, 10 MB for strict work servers).
- Click Compress video, download, and attach the smaller file to your message.
Private and watermark-free
Unlike upload-based converters, SumoSquash compresses the video locally with WebCodecs, so your file never touches a server and the output has no watermark. Trim to just the part you
need to keep quality high at a small size.
Email attachment limits, at a glance
- Gmail: 25 MB per message.
- Outlook.com: ~20 MB.
- Corporate Exchange / older SMTP: often 10 MB — use the custom field to be safe.
What is the email attachment size limit?
Gmail 25 MB, Outlook ~20 MB, many work servers ~10 MB.
Is anything uploaded to SumoSquash?
No. Compression is 100% in-browser; you attach the result to your own email client.
How do I hit a stricter limit like 10 MB?
Enter 10 in the custom MB field. Trimming and 720p downscaling help the quality at small sizes.
Runs locally with mediabunny (WebCodecs), wavesurfer.js & jSquash. No upload, no account.