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How to Compress Video for Email Attachment

Reduce video file size to fit email attachment limits. Browser-based compression — no upload to any server.

Most email providers limit attachments to 25 MB, but video files are often much larger. Compressing video before sending is essential for email delivery.

ConvertCraft's Video Compressor uses browser-based FFmpeg to reduce file size while maintaining acceptable quality. Your video never leaves your device.

Open the Video Compressor, select your video, choose a target file size or quality preset, and click Compress. The tool shows a size estimate before processing.

For best results with email, target 720p resolution and medium quality. This typically reduces a 1-minute 1080p video from ~150 MB to under 20 MB.

Supported input formats include MP4, MOV, AVI, MKV, and WebM. Output is always MP4 (H.264) for maximum compatibility with email clients and devices.

Open Video Compressor →

Frequently Asked Questions

What is the maximum email attachment size?

Gmail allows 25 MB, Outlook allows 20 MB, and Yahoo Mail allows 25 MB. For larger files, consider using a cloud sharing link instead.

How much can video be compressed without noticeable quality loss?

A typical 1080p video can be compressed by 60-80% with minimal visible quality loss when using the medium quality preset.

Why can't I compress to an exact file size?

Video compression is content-dependent — scenes with motion compress differently than static scenes. The tool estimates the output size, which may vary slightly.