How to use it
- Add your files. Drop MP4 files on the page or use Choose files. Folders and ZIPs work too.
- Check that WebP is selected. WebP is already chosen on this page.
- Adjust options if you need to. Quality, size and other settings appear when the format has them.
- Convert and download. Press Convert; with several files, “Download all” gives you one ZIP.
What happens to your file
The video is decoded frame by frame in your browser and saved as an animated WebP. You can choose the frame rate, width and maximum length to control the file size.
About MP4 and WebP
MP4: MP4 is the most widely supported video format: phones, browsers, TVs and every editor play it.
WebP: WebP is Google’s image format for the web; it can be still or animated and is much smaller than JPG, PNG or GIF.
Questions
Is my MP4 file uploaded?
No. The conversion runs inside this browser tab, and the WebP is created on your device. Nothing is sent to a server.
Is there a file size limit?
No fixed limit: files are processed by your device, so very large videos depend on its memory. Computers handle several GB; phones are best with smaller files.
Can I convert several MP4 files at once?
Yes. Drop as many as you like, a folder or a ZIP; “Download all” saves every WebP in one ZIP.