Convert MOV to WebM for Web Video
Turn an Apple QuickTime (.mov) video into WebM — an open, efficient format built for fast-loading web video, without needing QuickTime to play it.
Download Started!
How would you rate your experience with MiConvert?
Why Convert MOV to WebM?
MOV is Apple's QuickTime container format, common from iPhones and Mac screen recordings, but not every platform or browser handles it smoothly, and it's not particularly optimized for web delivery.
WebM, built around open VP8/VP9 and Opus codecs, is specifically designed for efficient web streaming — smaller files, faster loading, and native support in every modern browser.
This conversion is common for creators moving footage from an iPhone or Mac (which naturally produces MOV) into a website or web application that expects a more web-friendly format.
How to Convert MOV to WebM
- Upload your MOV file.
- MiConvert re-encodes the video using VP8/VP9 and Opus codecs.
- Download the converted WebM file.
- Serve it directly on your website for faster load times.
Key Features of MiConvert MOV to WEBM
- Converts Apple QuickTime MOV video to the open, efficient WebM format
- No QuickTime or Mac required to play the result
- Natively supported by all modern browsers
- Ideal for web video that needs fast loading
- Free for files up to 50MB, 100MB for registered accounts
Video Tutorial
Watch this step-by-step tutorial to learn how to convert MOV files to WEBM format online for free using MiConvert.com. No software installation required.
Frequently Asked Questions
Will WebM play in all browsers without QuickTime?
Yes — WebM is natively supported by Chrome, Firefox, Edge, and current Safari, with no QuickTime or additional plugin required.
How much smaller will the WebM file be compared to the MOV?
It varies by content and how the original MOV was encoded, but WebM generally achieves good compression efficiency, often producing a smaller file at similar visual quality.
Will there be any visible quality loss?
At our default settings, quality loss is designed to be minimal and not noticeable during normal playback.
Do I need a Mac or QuickTime installed to convert?
No — the conversion happens entirely on our servers, regardless of what device created the original MOV file.
Does the WebM keep an alpha channel or transparent background?
No. While the WebM format can technically carry alpha, our conversion outputs standard opaque video, so a transparent MOV (for example ProRes 4444) is flattened onto a solid background. If you need to preserve transparency, keep the footage in a format that stores the alpha channel.
Is there a file size limit?
50MB free, 100MB for registered accounts.