Compress Video for Email — Fit Under the Attachment Limit

Click below and the converter opens with email-ready settings already applied — H.264, Small quality, capped at 720p — tuned for Gmail and Outlook's 20-25 MB attachment limits. Drop in your file and convert.

Compress for email →
  • No upload wait
  • Nothing leaves your device
  • Free, no account
  • No artificial size limits

One click, the right settings

The "Compress for email" button above opens the converter with settings tuned for email already in place: MP4 (H.264), the Small quality preset, and a 720p cap. Drop in your file and press convert — there's no setting to hunt for.

Email attachment size limits

  • Gmail — 25 MB per message (attachments count together).
  • Outlook / Microsoft 365 — 20 MB by default.
  • Yahoo Mail — 25 MB.
  • iCloud Mail — 20 MB (larger goes via Mail Drop).

Why these settings

H.264 is the safest choice for email — it opens on essentially every device and mail client with no extra software, which is why the preset uses it. Small quality plus a 720p cap does the heavy lifting to get you under a 20-25 MB ceiling. Because the whole message has to fit, not just the video, aim a little below the limit — the preset targets comfortably under 20 MB.

When the video is simply too big

Compression works well for short clips, but a long or high-motion video may not fit in an email even after shrinking. In that case, trim it down to the part you actually need, or share a link instead. For anything that does fit, the preset is the quickest way to just hit send.

Nothing leaves your device

The video is compressed locally in your browser. For H.264 output from common formats like MP4 or MOV, that can mean your browser's built-in encoder, which is usually hardware-accelerated; other combinations fall back to a WebAssembly build of ffmpeg. Either way, the compressing itself is done by your device, not by us — we just supply the code — and nothing is uploaded to a server or seen by anyone. That keeps a confidential attachment 100% private, exactly as it should stay.

Frequently asked questions

What settings does the email preset use?
Clicking "Compress for email" opens the converter with MP4 (H.264) video, the Small quality preset, and a 720p resolution cap already set — tuned to land under Gmail, Outlook, and Yahoo's 20-25 MB attachment limits. Drop in your file and convert; there's nothing else to configure.
What is the maximum video size I can email?
It depends on the provider: Gmail and Yahoo allow 25 MB per message, while Outlook and iCloud default to 20 MB. Because the whole message counts toward that limit, not just the video, aim a little under it — the email preset here targets comfortably below 20 MB.
Does compressing a video for email reduce quality?
A little quality is traded for size, which is unavoidable at a 20 MB ceiling. For a short clip the difference is usually hard to notice, especially since the preset combines H.264 with the Small setting and a 720p cap — plenty of resolution for a file about to be squeezed into an email anyway.
What's the best format to email a video?
MP4 (H.264) is the safest choice for email — it plays on essentially every device and mail client with no extra software, which is why the email preset uses it. If the recipient has a modern phone or computer, H.265 (from the general Compress Video tool) cuts the size roughly in half.
Is my video uploaded anywhere?
No. Everything happens in your browser — commonly using your device's own hardware-accelerated encoder for H.264, with a WebAssembly fallback when needed. Your file is never uploaded, stored, or transmitted, which makes it safe for work documents and private footage.

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