Skip to content
Free File Converter

MP4 to WebM Converter

Convert MP4 video to WebM for web streaming and HTML5 video tags with smaller file sizes. Browser-based encoding, no uploads, no watermarks.

← All file converters

About this converter

How MP4 to WebM conversion works

Convert MP4 video to WebM for web streaming and HTML5 video tags with smaller file sizes. Browser-based encoding, no uploads, no watermarks.

Drop a MP4 file into the workspace above and the converter will produce a WebM file directly in your browser. Conversion runs locally - your file never leaves your device, no account is required, and there are no upload limits.

  • • Private — processing happens entirely in your browser.
  • • Free — no signup, no watermarks, no daily limits.
  • • Fast — no upload time, no server queues.

Step-by-step Guide

How to convert MP4 to WebM

1

Upload your files

Drag and drop your files into the workspace above or click to select them from your device.

2

Adjust settings (optional)

Configure any specific options or preferences for your conversion or calculation.

3

Download the result

Click the action button and wait for processing to finish, then download your final file.

FAQ

Frequently Asked Questions

Is this tool free to use?

Yes, our tool is completely free with no hidden limits or watermarks.

Are my files secure?

Absolutely. All processing happens right where you are, without sending your files elsewhere.

Does this work on mobile?

Yes, our platform works smoothly on any modern device, including smartphones and tablets.