Convert MP4 to WebM Online in Seconds

  • Step 1: Pick or drop your MP4 file above.
  • Step 2: Our cloud engine converts it to WebM automatically.
  • Step 3: Hit Download to save the WebM — share anywhere online.

MP4 2 WebM

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Convert MP4 to WebM

Upload any clip — even gigabyte-sized 4K files — and get a web-friendly WebM in seconds.

Optimise for the Web

WebM (VP9 + Opus) streams smoothly in modern browsers and keeps quality high at lower bitrates.

Unlimited & Free

No caps on length, file size or daily usage. We never charge or watermark.

MP4 vs WebM

MP4 is universal, but heavier. WebM is open-source, royalty-free and tuned for HTML5 video. Convert to cut bandwidth while matching quality.

Why Converter App?

A decade of file-conversion expertise plus a clean interface — the video is ready before you finish your coffee.

Privacy Built-In

Your videos auto-delete from our servers shortly after conversion; only you can download them.

MP4 to WEBM converter quality rating

+ + + + + 4.9 / 5   (based on  280  reviews )

You can submit your review after uploading and editing at least one file!