Compress video for email
Attaching a video to an email often bounces with "attachment too large". Most providers cap around 25MB. Compress to that size first and it attaches normally for the recipient to download — no cloud-link dance required. The tool above is preset to 25MB.
Quick answer
Gmail, Outlook and most mail providers cap a message's attachments at about 25MB (over that, Gmail auto-swaps to a Google Drive link). ConvertMeow shrinks your video under 25MB in your browser so it attaches normally — never uploaded, no watermark.
Shrink your video to 25MB
Target size
Derives a bitrate from target size ÷ duration and re-encodes; best for short clips.
Attachment limits by provider
Gmail: ~25MB per message (body plus all attachments combined); over that it switches to a Google Drive link. Outlook / Microsoft 365 is also around 25MB (some setups are lower, e.g. 20MB).
Remember it's the whole message that's capped, not just one file — if there are other attachments, leave headroom and compress the video a bit below 25MB to be safe.
- Gmail / Outlook: compress to ≤25MB (≤20MB to be safe).
- The recipient's provider may cap lower: smaller is safer.
- If it must stay sharp and won't fit, use a cloud share link instead.
Still blurry at 25MB?
Longer videos look soft at 25MB. Two fixes: trim to the segment you actually need first; or, if quality is critical and it must go, share a cloud link (Drive / OneDrive) and put only the link in the email.
Frequently asked questions
Mainstream providers (Gmail, Outlook) cap around 25MB, and that's the whole message combined. Compress to under 25MB (smaller to be safe) and it attaches fine.
Gmail auto-converts an oversized attachment into a Google Drive link in the email for the recipient to download. If you'd rather they get the file itself, compress under 25MB first.
No. Compression runs entirely locally in your browser with ffmpeg — never uploaded, no watermark, no cap.
Updated · ConvertMeow team