Compress video for Messenger
Messenger caps chat media at 25 MB — one preset lands your video under it, compressed on your own device.
Drop your video here
or
MP4, MOV, WebM, MKV, AVI and more — any size, no upload
🔒 Files never leave your device — everything runs in your browser.
Facebook Messenger's Help Center caps media sent in chats at 25 MB — the official sentence names photos, voice messages, GIFs and stickers, and in practice a video needs to clear the same bar to send reliably. There is a second, roomier path: attaching your video as a FILE (the plus button, then Files) accepts up to 100 MB on mobile, at the cost of no inline playback for the recipient.
25 MB is a workable budget when the encoder respects it: a minute of footage keeps good quality, and a couple of minutes stays perfectly watchable. The compressor targets the byte count itself with margin, so the send doesn't fail at the last moment — and because everything runs on your device, the clip goes straight from your gallery to the chat with no third-party server in between.
How it works
- Drop your file
Any common format, any size. Nothing is uploaded — the tool runs in your browser.
- Pick your target
Use the presets above — this page's defaults are tuned for compress video for messenger — or type any size.
- Download
Your converted file is ready on your device — nothing to wait for, nothing to delete from a server.
Frequently asked questions
What exactly is Messenger's video size limit?
Messenger's Help Center states a 25 MB cap for media sent in chats (the sentence lists photos, voice messages, GIFs and stickers — a video under 25 MB sends within the same media pipeline). Sending as a file attachment instead allows up to 100 MB on mobile.
Chat video or file attachment — which should I pick?
Under 25 MB, send it as a normal chat video: it previews and plays inline. Between 25 and 100 MB, attach it as a file — the recipient downloads it instead of watching inline. Over 100 MB, compress first; this page's presets match both paths.
Why did my video fail to send at "25 MB"?
Size checks are exact, and your phone's idea of 25 MB rarely matches the server's byte count. The compressor lands safely under the cap, not just near it, so the send goes through the first time.
Is my file uploaded to a server?
No. ConvertUno runs entirely in your browser on your own device. Your file never leaves your computer or phone — there is no upload at all.
Is it really free, with no watermark?
Yes. Processing happens on your device, so serving you costs us almost nothing — no watermark, no account, no file-size limit, no daily quota.