Convert WebM to MP4 Online

WebM is a browser-native video format, but many devices, video editors and media players don't open it natively. Converting to MP4 gives you universal compatibility - playable on phones, TVs, social media platforms and virtually any software. This tool runs entirely in your browser, so the conversion starts instantly, your files stay private and no upload is needed.

Drop your video here

or click to select a file

🔒 Your files never leave your device - 100% private & secure

🔒100% Private
⚡No Upload
🌐Works Offline
🆓Completely Free
✨No Watermark

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How to Convert WebM to MP4 Online for Free

  1. Select your WebM file

    Drag a WebM file onto the upload area or click Select Video. Other video formats such as MKV, MOV and OGV are also accepted.

  2. Convert and download

    MP4 is selected automatically. Optionally adjust quality via the Advanced toggle, then click Convert. Everything runs locally in your browser - your file is never uploaded. When it is done, download the MP4 file.

Why Convert WebM to MP4?

WebM was designed for the web and works well inside browsers, but outside the browser its support is limited. Many smartphones, smart TVs, game consoles and video editors either refuse to open WebM files or require extra plugins. MP4 with H.264 video is the most widely supported video format in the world - it plays natively on virtually every device, operating system and media player. Converting your WebM files to MP4 ensures they can be shared, edited and played anywhere without compatibility issues.

Frequently Asked Questions

How do I convert WebM to MP4?

Drop or select your WebM file on this page, choose MP4 as the output format, then click Convert. The conversion runs entirely in your browser - no upload, no signup, no cost. When it finishes, click Download to save your MP4 file.

Will the video quality change?

If you keep the quality set to Original, the output uses the same bitrate as your source file so the visual quality stays as close to the original as possible. You can also choose High, Medium or Low to reduce the file size at the cost of some detail. The exact bitrate for each option is displayed so you can decide before converting.

Is there a file size limit?

There is no hard limit. The practical limit depends on your device's available memory. Most modern computers handle files up to several gigabytes without issues. Because everything runs locally, there is no upload or server-side restriction.

Is my file uploaded to a server?

No. Your files never leave your device. VidShift has no backend servers that receive or store your media. All conversion runs locally in your browser using WebAssembly, ensuring complete privacy. The tool even works offline after your first visit.

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