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MP4 to WebM Converter

Convert MP4 videos to WebM format for modern web usage.

Upload MP4 Video

Drag and drop or click to browse

Optimize Video for the Web

MP4 is great, but WebM is often smaller and more efficient for website backgrounds and HTML5 players. Convert your videos to WebM to speed up your website loading times without sacrificing quality.

HTML5 Ready

Why Use This Converter?

Open Web Standard

WebM is an open, royalty-free media file format designed for the web.

Faster Loading

Smaller file sizes mean your website loads faster for visitors.

Modern Compatible

Supported by all modern browsers (Chrome, Firefox, Edge, Opera).

100% Free

Convert as many videos as you need without paying a cent.

How this MP4 to WebM Converter works

The MP4 to WebM Converter runs entirely in your browser using JavaScript. Unlike other tools that send your data to a server, we process everything locally on your device. This guarantees 100% privacy and blazing fast speed.

  • No server interaction – data never leaves your device
  • Instant results since there is no network latency
  • Works offline once the page is loaded
  • Free to use with no usage limits

How to Use

1

Upload MP4

Select the MP4 file you want to optimize for the web.

2

Converting

Our engine re-encodes it to VP8/Vorbis (WebM).

3

Download

Get your web-optimized video file.

Example Usage

Optimizing video for websites:

Input
hero_background.mp4 (25MB)
Output
hero_background.webm (12MB)

Frequently Asked Questions

Why should I convert MP4 to WebM?
WebM is an open media format optimized for the web. It often provides high quality at smaller file sizes compared to MP4, making it ideal for website backgrounds, hero videos, and HTML5 video players to improve page load speed.
Is WebM supported by all browsers?
WebM is supported by all modern browsers including Chrome, Firefox, Edge, and Opera. Safari also has support in newer versions. It is the standard for modern web video delivery.
Does this tool reduce video quality?
Our converter uses standard bitrate settings to balance quality and file size. While any compression involves some trade-offs, the visual quality of the resulting WebM file is typically excellent for web use.
How do I use the converted WebM file?
You can use the <video> tag in HTML5. Ideally, serve both MP4 and WebM sources to ensure 100% compatibility across all devices and browsers.
Is it safe to convert private videos?
Yes, absolutely. Like all our tools, the conversion happens locally in your browser. We never see, store, or upload your video files.
Is this converter free?
Yes, it is 100% free with no hidden costs or daily usage limits.

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The MP4 to WebM Converter is maintained by CodeItBro. We aim to provide the best free developer tools on the web. If you have feedback or suggestions, please visit our contact page.

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