How do I open a WebM file on my iPhone?

How to Open a WebM File on an iPhone
  1. Open the Safari browser on your iPhone.
  2. Visit the page with WebM video you could not watch previously. …
  3. Now tap More (three dots).
  4. From the list of available apps, tap Open in PlayerXtreme.
  5. Once you do that, the video will start playing.

Is WebM supported on iPhone?

Apple has not yet added WebM video playback ability to iPhone. To play WebM on iPhone, you can convert it to a format that iPhone supports or use PlayerXtreme, VLC, or a dedicated WebM player browser.