Compress Video for Email
Compress video for email to fit Gmail's 25MB attachment wall (Outlook: 20MB, iCloud: 20MB) without Google Drive links. Browser-based, free, no watermark.
Official platform specifications
Default compression settings target these specs to avoid the platform re-encoding your upload.
Notes & gotchas
- •Bitrate: target ~1-2 Mbps for 720p to fit 3-4 minutes in 25 MB.
- •Audio: AAC, 96-128 kbps stereo.
- •Container: MP4 with +faststart for streaming playback.
- •Gmail prompts Google Drive for files over 25 MB — pre-compression avoids this friction.
- •Outlook desktop requires download for inline video (web Outlook plays inline).
- •Avoid WebM — Outlook web doesn't reliably play it inline.
- •Mobile clients vary; iOS Mail plays inline, some Android clients require tap.
Recommended FFmpeg settings
Need to compress video for email before attaching? Email was never designed for video — the underlying IMAP/SMTP protocols date from the 1980s when 1 MB attachments were considered generous. Despite this, modern email providers allow video attachments up to specific size caps: Gmail allows 25 MB, Outlook allows 20 MB (smaller for some corporate Exchange tenants), iCloud Mail allows 20 MB, ProtonMail allows 25 MB. Files above these limits get rejected outright — they don't auto-compress. This email video compressor pre-compresses below 24 MB locally with adaptive bitrate calculation, producing a file that attaches directly to the email, plays inline in modern mail clients, and gets watched dramatically more often than link-shared videos. Default output: 720p H.264 at calculated bitrate, AAC 96 kbps stereo, target 24 MB.
- 1Gmail's 25 MB wall rejects anything larger — instead of allowing the upload, Gmail prompts 'use Google Drive instead' which adds click friction that kills viewer engagement.
- 2Outlook's 20 MB and iCloud Mail's 20 MB limits are even tighter. Targeting 24 MB covers Gmail; for Outlook/iCloud recipients, target 19 MB or less.
- 3Inline-playing attachments get watched 3-5x more often than link-shared videos according to email marketing studies. Pre-compression preserves inline playback.
- 4Runs locally — keeps personal and business Confidential videos off cloud services. Critical for HIPAA-protected medical content, attorney-client privileged material, and family footage of minors.
- 5Adaptive bitrate calculation: based on your video's duration, the tool computes the exact bitrate that produces ~24 MB output. A 30-second clip keeps 720p quality; a 5-minute clip gracefully drops to 480p rather than failing.
- 6MP4 output plays inline in modern mail clients (Gmail web, Apple Mail, Outlook web, Fastmail) without requiring download first.
Three steps, no account needed
From raw footage to shareable MP4 in seconds — all in your browser.
Upload your video
Drag-and-drop or click to browse. Files are processed locally — nothing is uploaded to any server.
Pick quality
Use the recommended preset or fine-tune CRF / resolution in advanced settings.
Download
Compression runs entirely in your browser. Grab your smaller MP4 in seconds — no account, no watermark.
Why people choose this compressor
Built for everyday use — fast, private, and free forever.
100% Browser-Based
Your video never leaves your device. No upload, no server-side processing, no privacy concerns.
No Watermark
Output is clean H.264 MP4 — no logos, no overlays, no time limits baked in.
Free & Unlimited
No sign-up, no credit card, no daily cap. Compress as many videos as you need.
Fast FFmpeg Engine
Powered by FFmpeg compiled to WebAssembly — the same engine professionals use, now in your browser.
Universal MP4 Output
Output is H.264 + AAC in an MP4 container — plays everywhere, uploads everywhere.
Cross-Platform
Works on Windows, macOS, Linux, iOS, and Android — any modern browser.
Who uses this tool
Marketing Emails
Embed product demo videos directly in marketing emails. Inline video attachments get watched 3-5x more than link-shared videos according to Mailchimp and Constant Contact studies.
Family Sharing
Share vacation, baby, and event videos with older relatives who don't use Google Drive or Dropbox. Email is universal — pre-compression makes it work for video.
Business Confidential
Compress internal training and Confidential recordings before sending. Local processing keeps content off third-party servers — important for HIPAA, attorney-client privilege, and NDA-protected material.
Real Estate Listings
Email property walkthrough videos to potential buyers. Pre-compression ensures the video lands in the inbox, not blocked by attachment limits or spam filters.
Job Applications
Attach portfolio videos to job application emails. Pre-compression ensures the email actually delivers, not bounced for oversized attachments.
Customer Support
Embed tutorial videos in support response emails. Inline video gets watched; link-shared YouTube tutorials get ignored by frustrated customers.
Frequently asked questions
Varies by provider: Gmail allows 25 MB, Outlook allows 20 MB (smaller for some corporate Exchange tenants at 10 MB), iCloud Mail allows 20 MB, ProtonMail allows 25 MB, Fastmail allows 25 MB, Yahoo Mail allows 25 MB. Most providers reject larger files outright rather than auto-compressing — pre-compression is essential. This email video compressor targets 24 MB output to fit safely under all common limits.
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