Filenary

MOV to WEBM Converter

Convert QuickTime video files to WebM video right in your browser — free, private and with no size limit.

Drop your file here

or click to browse

Choose File

On first use, a ~30 MB conversion engine is downloaded to your browser (one time only).

This file is processed in your browser and never uploaded to a server.

How to convert MOV to WEBM

  1. 1Drop your MOV file into the box above, or click to choose it from your device.
  2. 2Click Convert. The conversion runs locally in your browser — nothing is uploaded.
  3. 3Download your new WEBM file as soon as it's ready.

Why convert MOV to WEBM?

MOV files are large and don't play smoothly on many Windows PCs, Android devices and websites. WebM is an open format made for the web, supported by all major browsers.

Why people make this conversion

Apple-recorded footage lands in WebM for embedding on sites that avoid MP4 licensing overhead.

The size math: MOV vs WEBM

At typical quality a minute of content weighs about 18 MB as MOV and 8 MB as WEBM — after conversion your WEBM file comes out about 2.3× smaller.

What is MOV?

MOV is Apple's QuickTime video format, used by iPhones and Mac apps. Files are often high-quality and large.

  • MIME type: video/quicktime
  • Developed by: Apple, released 1991
  • A container, not a codec — can hold ProRes, H.264 and more
  • Default video format of iPhone recordings

What is WEBM?

WebM is an open, royalty-free web video format by Google, commonly using VP8/VP9 video. It's widely used for web and screen recordings.

  • MIME type: video/webm
  • Released: 2010, led by Google
  • Usual codecs: VP8/VP9/AV1 with Vorbis or Opus audio
  • Royalty-free — no licensing fees for web delivery

Frequently asked questions

Is this MOV to WEBM converter free?
Yes, it's completely free with no sign-up, no watermark and no daily limits.
Are my MOV files uploaded to a server?
No. The conversion happens entirely inside your browser, so your files never leave your device.
Is there a file size limit?
Filenary sets no limit — even files over 1 GB work. The only practical limit is your device's memory.
Will converting MOV to WEBM reduce the quality?
WEBM uses lossy compression, so the file becomes smaller with a small, usually invisible, loss of detail. Settings are tuned to keep the result sharp.
Can I convert several MOV files at once?
This converter handles one file at a time. When it's done, click Start over to convert the next MOV file.
Does it work on iPhone, Android, Mac and Windows?
Yes. It runs in any modern browser — Chrome, Safari, Edge or Firefox — on phones, tablets and computers, with nothing to install.

More MOV conversions

Convert other files to WEBM

All file conversions

Add this tool to your website

Copy the code below and paste it into any page. It's free, needs no sign-up, and files are processed in your visitors' own browsers.