Compress video for WeChat
WeChat accepts chat videos under 20 MB — one preset lands yours below 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.
WeChat's own help pages are unusually strict about video: a video sent in a chat from your camera roll must be under 20 MB, and photos top out at 10 MB. In-app recordings sidestep the cap by being short — 15 seconds — which is exactly why longer clips from your gallery bounce with a vague error while snaps go through fine.
20 MB is tight but honest work for a compressor that targets bytes: a 30–60 second clip keeps genuinely good quality, and a couple of minutes stay watchable with resolution stepped down gracefully. One thing you won't find here is a made-up "file transfer" limit — WeChat doesn't publish caps for send-as-file, so we don't print one. The 20 MB chat-video rule is documented twice over, and that is the number this page is built on.
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 wechat — 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 WeChat's video size limit?
Videos sent in chats from your camera roll must be under 20 MB — stated on WeChat's own help pages. Photos are capped at 10 MB, and in-app video recordings are limited to 15 seconds by duration rather than size.
What about sending the video as a file instead?
WeChat does not publish a size cap for file attachments, and the numbers circulating on converter sites (100 MB, 1 GB, 2 GB) appear on no official WeChat page — so we won't state one as fact. Under 20 MB as a normal chat video is the documented, reliable path with inline playback.
How much quality survives at 20 MB?
A short clip — 30 to 60 seconds — keeps sharp, close-to-original quality. Around two minutes expect reduced resolution; beyond that, trim the clip first (one click on this site) and spend the bytes on the part that matters.
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.