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WebP to WebM

Convert animated WebP to WebM video for free, or still WebPs into a WebM slideshow. Nothing is uploaded.

Files stay on your device

Drop WebPs to make a video

One picture or many, each shown for as long as you choose. Animated ones play. Nothing is uploaded.

PNG, JPG, WebP, HEIC, AVIF, SVG, BMP, and GIF. As many as you like, or a whole folder.

How to convert WebP to WebM

Add an animated WebP and save it as a WebM video, the format websites and Discord play inline. Still WebPs become a slideshow, each shown for the seconds you choose. It runs in your browser, so your files stay on your device.

  1. Step 1

    Add your WebP
    An animated WebP, or stills for a slideshow.

  2. Step 2

    Keep WebM
    WebM is chosen; MP4 is a click away.

  3. Step 3

    Download the WebM
    Ready for the web and Discord.

What to expect

Supported inputs
WebP files, still or animated, and any other picture: PNG, JPG, GIF, HEIC, AVIF, or SVG.
What happens
An animated WebP plays once through, or loops for longer if you set more seconds; stills show for their seconds. Saved as WebM (VP9 or VP8). An animated WebP plays in browsers that can decode its frames, such as Chrome and Edge; elsewhere it shows its first frame.
Limits
Transparent parts show black. Safari plays WebM only in recent versions; choose MP4 for iPhones.

Private by design

Your video stays on your device

Mastershot processes your file locally in this browser. It does not need to be uploaded to a server, and you do not need an account to use the tool.

  • No upload
  • No signup
  • No watermark

Questions

WebM suits websites and Discord. For iPhones and most apps, MP4 is the safer choice.

Yes, where the browser decodes every frame, as Chrome and Edge do.

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