File Converter

MOV to WebM converter Free, private, no upload.

Convert MOV files to WebM right in your browser. WebM is open, royalty-free and plays natively in web browsers, which makes it a good fit for websites. Your files are never uploaded.

or drop files anywhere · paste with Ctrl/⌘ + V

How to convert MOV to WebM

  1. 1 Drop your MOV files onto the page, or click “Choose files”. You can add many at once, or a whole folder.
  2. 2 WebM is already selected as the output. Optionally open Options to adjust quality, resolution, frame rate.
  3. 3 Click Convert, then Save. Converting several files? Save them all as one ZIP.

About the formats

MOV · QuickTime movie

MOV is Apple’s QuickTime video format. iPhones, Macs and many cameras record in MOV.

WebM · WebM video

WebM is an open video format made for the web, using VP8/VP9 video and Opus or Vorbis audio.

The conversion runs on your device using FFmpeg compiled to WebAssembly. You can adjust: quality, resolution, frame rate, remove audio, start at, end at.

Frequently asked questions

How do I convert MOV to WebM?

Drop your MOV files onto the page, or click “Choose files”. You can add many at once, or a whole folder. WebM is already selected as the output. Optionally open Options to adjust quality, resolution, frame rate. Click Convert, then Save. Converting several files? Save them all as one ZIP.

Are my files uploaded to a server?

No. The conversion runs entirely in your browser using WebAssembly. Your files never leave your device, so it is safe for private photos, contracts and business data. Once the page has loaded it even works offline.

Will converting MOV to WebM reduce quality?

WebM uses lossy compression, so some detail is traded for a smaller file. At the default quality the difference is very hard to see or hear, and you can raise the quality setting if you need more.

Can I convert multiple MOV files to WebM at once?

Yes. Add as many MOV files as you like; they are converted in parallel on your device and you can download them all as a single ZIP.

Is it free? Are there limits?

It is free, with no sign-up, no watermark and no daily limits. Because nothing is uploaded there is no upload size limit either; the only limit is your device’s memory, which matters mostly for very large videos.

Why convert iPhone MOV videos to MP4?

MP4 is accepted by far more websites, Windows apps and Android devices than MOV, and the video usually looks the same.

Convert other formats to WebM

See everything the MOV converter and the WebM converter can do.