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MOV to WebM Converter — Free, Online, No Upload

Embed your video on a website without QuickTime plugins — WebM works natively in every modern browser.

Free · no signup2 free files a day100% in-browser · no upload

Tap to select MOV files

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2 free files per day (2 left today) · Up to 10 MB each · Upgrade for more

✓ Files never uploaded✓ 100% browser-based✓ No account required
Need the reverse?WEBM → MOV

How to convert MOV to WEBM online

  1. 1

    Drop your MOV file

    Drag your QuickTime Movie file onto the box above, or click it to pick a file.

  2. 2

    Wait a few seconds

    Conversion starts on its own and runs on your device, not on a server.

  3. 3

    Download your WEBM

    Click Download to save the WebM Video Format file.

MOV vs WEBM: format overview

MOV

QuickTime Movie

Apple · 1991

Compression
lossy
Transparency
No
  • ✓ High quality, preferred by Apple ecosystem
  • ✓ Supports ProRes codec for editing
  • ✗ Poor Windows/Android compatibility without QuickTime
WEBM

WebM Video Format

Google (On2 Technologies) · 2010

Compression
lossy
Transparency
No
  • ✓ Royalty-free codec (VP8/VP9/AV1)
  • ✓ Excellent web streaming support

MOV magic bytes: 00 00 00 xx 66 74 79 70 71 74

WEBM magic bytes: 1A 45 DF A3

Why convert MOV to WEBM?

You have a video from your iPhone, QuickTime screen recording, or iMovie export in MOV format, and you need to embed it on a website. The HTML5 <video> element does not support MOV — browsers have no native MOV decoder. Users who click play will see nothing. QuickTime plugin support was dropped years ago. WebM is the web's open video format: royalty-free, natively supported in Chrome, Firefox, and Edge, and increasingly supported in Safari.

WebM holds VP8, VP9 or AV1 video and Opus audio — all open, royalty-free codecs. Web developers choose WebM for self-hosted video because it loads efficiently in browsers, works well with the HTML5 <video> tag, and doesn't require a CDN or video host. For landing page background videos, tutorial embeds, and any video that needs to play directly in a webpage, WebM is the correct format.

Converting MOV to WebM requires full transcoding — the H.264/H.265 inside the MOV is re-encoded to VP8 (the VP9 encoder can't run in the browser), and the AAC audio is re-encoded to Opus. The video is capped near 2 Mbps, so expect a small quality loss and a file that is often larger than the MOV. Note that Safari support for WebM was added in macOS Big Sur and iOS 14.5 — older Safari versions require a MOV or MP4 fallback source in the <video> element alongside the WebM.

Quality & file size: MOV to WEBM

Typical sizes (1 minute 1080p): MOV 150–500 MB → WEBM 50–200 MB.

Frequently asked questions

Why is WebM better than MOV for embedding on websites?
Browsers don't support MOV natively in HTML5 <video> elements — it requires QuickTime, which Apple discontinued on Windows. WebM is a royalty-free format natively supported by Chrome, Firefox, and Edge.
Does Safari support WebM?
Safari added WebM support in macOS Big Sur and iOS 14.5. For older Safari versions, provide a MOV or MP4 fallback alongside the WebM in your <video> element.

Your MOV file never leaves this tab — FormatDrop has no endpoint that receives file data. How it works