MOV to WEBM Converter

Convert MOV files to WEBM free in your browser — no signup, no install, and the file is never uploaded to a server. WEBM compresses further, so the file gets noticeably smaller.

Completely free Files are never uploaded No signup required
Drop files or click to select
MOV → WEBM

What changes in this conversion

  • WEBM uses lossy compression, so some picture detail is discarded permanently in exchange for a much smaller file.
  • WEBM is a newer format — check that the software or device you are sending it to supports it before switching.
  • Both MOV and WEBM are lossy, so re-encoding discards a little more picture detail on top of what was already lost. Converting once is fine; repeating it many times is not.
  • The picture and sound are re-encoded to H.264 video with AAC audio inside the WEBM container, which is what makes the result play on the widest range of devices.

How to use

  1. Add your MOV file

    Drag the MOV file onto the drop area above, or click it to pick a file from your device. You can add several files at once.

  2. Confirm WEBM as the output

    WEBM is already selected as the output format on this page. You can pick the resolution. Encoding is the slowest part, so smaller resolutions finish sooner.

  3. Run the conversion

    Press the convert button. Video is re-encoded frame by frame on your own machine, so a long clip can take several minutes. The tab has to stay open.

  4. Download the WEBM file

    When it finishes, download the WEBM file. Converting multiple files gives you the option to download them together as a ZIP.

About these formats

MOV QuickTime Video

Apple's video container and the default for footage shot or edited on iPhone and Mac. It is edit-friendly but tends to produce large files.

Commonly used for iPhone footage, Mac video editing

MOV File format reference

WEBM WebM Video

An open video format created by Google for web streaming. It is royalty-free and compact, making it well suited to website background video.

Commonly used for Website video, browser streaming

WEBM File format reference

Frequently asked questions

Is converting MOV to WEBM really free?

Yes. MOV to WEBM conversion is completely free with no signup, no watermark, and no daily limit on the free plan for ordinary use.

Are my MOV files uploaded to a server?

No. The conversion runs entirely inside your browser using WebAssembly, so the MOV file never leaves your device. That is also why it works without an internet connection once the page has loaded.

Does converting MOV to WEBM reduce quality?

WEBM uses lossy compression, so some detail is discarded. At high quality settings the difference is usually invisible, and the file becomes far smaller.

Will the WEBM file open everywhere?

WEBM is a newer format. Current browsers and phones handle it, but older desktop software may not — keep the original MOV if you have to send it to someone on an old machine.

Is there a file size limit for MOV to WEBM conversion?

The free plan handles files up to 200MB. Because processing happens on your own device, very large files depend on your computer's memory rather than a server quota.

Convert MOV files to other formats

MOV AAC MOV AVI MOV FLAC MOV GIF MOV M4A MOV MKV MOV MP3 MOV MP4 MOV OGG MOV OPUS MOV WAV

Convert other formats to WEBM

3G2 WEBM 3GP WEBM ASF WEBM AVI WEBM DIVX WEBM F4V WEBM FLV WEBM M2TS WEBM M4V WEBM MKV WEBM MP4 WEBM MPE WEBM

Video converter

What each file format is, what it is used for, and which formats it can be converted to.

Open converter Browse the full format reference