Convert MP4 to WebM on Mac
Turn MP4 videos into small WebM files for your website. Nothing leaves your Mac.
$29 once, updates included. No account, no subscription, works offline. Need 2, 5 or 10 Macs?
Why convert MP4 to WebM?
WebM is Google's open, royalty-free format built for the web, using VP9 or AV1. Converting MP4 to WebM gives you small, efficient files for browsers.
- Convert MP4 to WebM with full codec and quality control
- Runs entirely on your Mac, no uploads, no watermark, no file-size limit
- Batch convert many MP4 files at once
- One-time $29, no monthly subscription
Convert in 3 steps
- 1
Drop your MP4 files
Drag and drop one file or a whole folder.
- 2
Choose WebM
Pick the output format and quality.
- 3
Convert
Click Convert and get the WebM file.
Frequently asked questions
Something not covered here? Write to support@picmal.app
How do I convert MP4 to WebM on Mac?
Open Picmal, drag your MP4 files into the window, choose WebM as the output, and click Convert.
Can I batch convert multiple MP4 files at once?
Yes. Drag in as many MP4 files (or a whole folder) as you like and Picmal converts them all to WebM in one pass, each with its own progress.
When should I convert MP4 to WebM?
When the video is going on a web page, where WebM is small and efficient. Desktop editors and many devices handle WebM poorly, so keep the MP4 for editing.