How to compress video for WhatsApp
- Drop your video.
- Keep 720p / 16 MB, or adjust.
- Compress video.
- Share the MP4 to WhatsApp.
Why compress before sending?
WhatsApp recompresses videos sent as regular media, often quite aggressively. Compressing to 720p yourself means you control the quality, the upload is faster, and it uses less of your recipient’s data and storage.
Private by design
ShrinkVid never uploads your files. The page loads once, then all decoding and encoding happens on your device using the browser’s built-in WebCodecs API (hardware-accelerated video) and WebAssembly image codecs. That makes it safe for personal, confidential or work files — and there is no queue, no file size cap and no watermark. Read how it works.
Frequently asked questions
Will WhatsApp compress it again?
WhatsApp may still process media videos, but a file that is already 720p and modest in size is usually altered much less. Sending as a document preserves the file exactly.
Are my files uploaded to a server?
No. ShrinkVid runs entirely in your browser. Files are read and encoded on your own device with WebCodecs and WebAssembly, so nothing is uploaded, stored or seen by anyone else. You can even disconnect from the internet after the page loads and it keeps working.
Is it really free? Is there a watermark or file size limit?
It is completely free with no watermark, no sign-up and no server-side file size limit. Because processing happens on your device, the only practical limits are your device’s memory and speed.
Last updated · by the ShrinkVid team