MOV → WebM
Convert MOV videos to WebM – locally in your browser
Why MOV → WebM?
Convert MOV videos to WebM – optimal for web. Directly in browser.
Frequently Asked Questions
Why convert MOV to WebM?
WebM is the optimal video format for websites – well compressed and supported by all browsers.
Are my files safe?
Yes, conversion happens entirely in your browser.
About WebM
WebM was released by Google in 2010 as a royalty-free video format for the web and is a profile of the Matroska container (MKV). WebM initially used VP8 for video and Vorbis for audio, with later versions supporting VP9 and AV1 for video and Opus for audio. The format was developed in response to the licensing issues surrounding H.264, whose MPEG-LA patents required licensing fees. YouTube automatically transcodes all uploaded videos to WebM, and the format is natively supported by Chrome, Firefox, and Edge. Safari only supported WebM starting with version 15 (2021). WebM with AV1 offers the best compression of all current web video formats but requires more computational power for encoding and decoding. For web video, WebM is the most important format alongside MP4, with MP4 offering broader compatibility and WebM representing the patent-free alternative.
About MOV
MOV (QuickTime Movie) was introduced by Apple in 1991 as the container format for QuickTime and is the predecessor of the MP4 standard. The ISO Base Media File Format standard on which MP4 is based was directly derived from the MOV format and shares its fundamental structure. MOV can hold various codecs including ProRes for professional video editing, H.264, HEVC, and animation codecs. The format supports multiple tracks for simultaneous audio and video, subtitles, metadata, and timecodes, making it the standard format in Apple Final Cut Pro and professional video production on macOS. ProRes is a visually lossless codec widely used in television production and post-production that enables fast decoding. MOV files are largely compatible with MP4 but can contain proprietary Apple codecs that do not work in all players. For web distribution, converting to MP4 is recommended since MOV is not universally supported outside the Apple ecosystem.
Why convert MOV → WEBM?
MOV (QuickTime Movie) is Apple's video format that plays natively on Mac systems but often doesn't work on Windows (without QuickTime, which Apple discontinued in 2016) and Android devices. Converting to WEBM creates a universally compatible version — MP4 for maximum device support or WebM for open web standards. WEBM makes iPhone and Mac videos playable on all platforms without requiring special player software. WebM is an open video format for HTML5 video with VP9 video and Opus audio, optimized for web streaming.