Compress Video to 20MB for Outlook
Outlook caps attachments at 20MB (Outlook.com) and many corporate Exchange servers set it lower. This tool re-encodes your video locally to fit, so it sends as a real attachment instead of a OneDrive link.
Drag & drop a video here, or
Processed 100% in your browser — your file never leaves your device.
MB
Why the 20MB limit exists
Outlook.com rejects attachments over 20MB; corporate Exchange admins often set 10MB. Above the limit Outlook pushes you to a OneDrive link, which external recipients sometimes can't open — compressing keeps it a plain attachment.
Frequently asked questions
- What is Outlook's attachment size limit?
- 20MB for Outlook.com personal accounts. Corporate Exchange mailboxes are frequently capped at 10MB by the administrator, so aim a little under your specific limit.