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Compress Video for Email

Shrink videos to fit email attachment size limits

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Email providers impose strict attachment size limits that make sending videos painful. Gmail caps attachments at 25MB, Outlook at 20MB, and many corporate email servers limit attachments to 10MB or less. Meanwhile, a single minute of 1080p video easily exceeds 100MB. Without compression, email is essentially unusable for video sharing.

Coda One's Video Compressor reduces video file sizes by 40-80%, making most short clips small enough to attach directly to emails. The tool runs entirely in your browser using FFmpeg WebAssembly -- no upload to any server, no account required. Upload your video, pick a quality level, and download the compressed MP4 ready to attach.

For email attachments, target your provider's limit with headroom to spare. Gmail users should aim for under 20MB (leaving room for the email body and other attachments). Outlook users should target 15MB. If your video is still too large after compression, consider splitting it or using a lower quality setting. The Medium-Low setting typically achieves 60-75% reduction -- enough to bring a 60MB video under 20MB.

The compressed output uses MP4 format with H.264 video and AAC audio, which is universally supported by every email client and device. Recipients can play the video directly without installing any special software, whether they're on Windows, Mac, iPhone, or Android.

Frequently Asked Questions

What are the email attachment size limits for major providers?
Gmail: 25MB, Outlook/Hotmail: 20MB, Yahoo Mail: 25MB, iCloud Mail: 20MB, and most corporate Exchange servers: 10-25MB. We recommend targeting 15-20MB to stay safely within limits and leave room for other attachments.
How small can I compress a 100MB video?
With Medium quality, a 100MB video typically compresses to 20-40MB. With Medium-Low or Low quality, you can achieve 15-25MB. Results vary based on the original video's encoding -- already-compressed videos have less room for further reduction.
Will the recipient be able to play the compressed video?
Yes. The output is MP4 with H.264 encoding, which is the most universally compatible video format. It plays natively on Windows, Mac, iOS, Android, and in all modern web browsers -- no special software needed.
Can I compress multiple videos for the same email?
Yes, compress each video individually and then attach them all. Keep the total attachment size under your email provider's limit. For multiple videos in one email, use lower quality settings to keep each file small.
Is there a better alternative to emailing large videos?
For videos that are still too large after compression, consider cloud sharing (Google Drive, Dropbox) with a link in the email. But for short clips under 3 minutes, compression usually gets the file small enough to attach directly, which is more convenient for the recipient.
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