Compress video for Zalo
Zalo sends files up to 1 GB — and keeps media under 100 MB long-term. Two presets, both hit 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.
Zalo's official help pages give two numbers that matter for video. Files up to 1 GB can be sent on the phone app, on Zalo PC, and in groups — Zalo itself recommends the send-as-file path for high-quality video. And there is a quieter rule with bigger consequences: media at or under 100 MB is kept long-term in your conversation storage, which is the difference between a video your family can still open next year and one that has expired.
That makes 100 MB the smarter target for anything worth keeping: a few minutes of phone footage fit comfortably at strong quality, the send finishes quickly on Vietnamese mobile networks, and the video stays retrievable. For big one-off transfers, the 1 GB preset lands safely under the cap. Either way the compression happens on your own device — the video never visits a third-party server.
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 zalo — 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 is Zalo's file size limit?
1 GB per file, documented on Zalo's own help pages for the mobile app, Zalo PC, and group chats alike. There is no bigger consumer tier — business products change storage quotas, not the send cap.
Why compress to 100 MB when Zalo allows 1 GB?
Because of retention: Zalo's help pages state that voice, images, videos and files at or under 100 MB are stored long-term, while heavier media can expire. A 100 MB video stays openable in the conversation; a 900 MB one may not be there when someone looks for it months later.
Should I send video as a file or as a normal video message?
Zalo itself recommends send-as-file for high-quality video — it avoids the extra in-chat recompression. Compress here first so the file is lean, then send it via the file picker; the quality you chose is the quality that arrives.
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.