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Process MP4 to WebM

Process Your MP4 to WebM documents simply

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Drop your files here for web-optimized processing

*Files deleted after 24 hours

Process up to 1 GB files free, Pro users can convert up to 100 GB files; Sign up now


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How to convert a MP4 to WebM file online

To convert a MP4 to webm, drag and drop or click our upload area to upload the file

Our tool will automatically convert your MP4 to WebM file

Then you click the download link to the file to save the WebM to your computer

MP4 to WebM Processing FAQ

How do I convert MP4 to WebM?
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Converting MP4 to WebM repackages your video from the MP4 container into WebM. WEBM.to remuxes the streams without re-encoding where the codecs are compatible (fast and lossless), and transcodes only when the target needs a different codec.
You move your content from the MP4 format into WebM so it works in the apps, devices or workflows that prefer WebM.
When the codec inside MP4 is compatible with WebM, WEBM.to remuxes without re-encoding — zero quality loss. When the codec must change, the video is transcoded with a small, controllable generational loss.
Short clips finish in seconds. Longer MP4 videos run at roughly real-time or faster on our GPU encoders, so a half-hour recording typically lands in a few minutes.
MP4 with H.264 is the safest, most universal WebM-family target. Use WebM for web embedding and MOV for Apple editing pipelines.
Yes. Single-file MP4 to WebM conversion is free with no signup. A Pro plan unlocks very large files, unlimited batch jobs and advanced features, but everyday conversions cost nothing.
Free users can upload MP4 files up to 100 MB — enough for most videos. Pro users go up to several GB per file and can queue large batches.
Yes. Drop multiple MP4 files in one go and WEBM.to converts them to WebM in parallel. Free accounts handle a couple at a time; Pro accounts have unlimited batch conversion.
No. The MP4 to WebM conversion runs entirely server-side in your browser — no Photoshop, Office, ffmpeg or any local install. Upload, convert, download.
Yes. WEBM.to runs in any modern mobile browser, so iPhone, iPad and Android users can convert MP4 to WebM without an app. The WebM result downloads straight to your device.
Yes. Your MP4 upload and the WebM output travel over HTTPS, are never read by a human, and are deleted automatically from our servers shortly after the job finishes. No watermarks, no resale of your data.
No account is required for basic MP4 to WebM conversions — you can convert immediately. A free account adds conversion history; a Pro plan adds large files, batch jobs and AI tools.

file-document Created with Sketch Beta.

MP4 container format can hold video, audio, subtitles, and images in a single file with excellent compression.

file-document Created with Sketch Beta.

WebM is designed for the web, offering royalty-free video streaming with VP8/VP9 codecs.

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