A few Live Photos I took on a recent trip to California, posted using LivePhotosKit JS. To see the video, hover your mouse pointer over the “LIVE” button in the top right corner of the photo. On a phone or tablet, tap and hold the picture.
For best results, use Safari if you’re on iOS. Chrome seems to work best on macOS. It works fine on macOS but seems to be a little buggy on iOS. (Apple says Chrome may work on Android, and any of the major browsers should work on Windows, but I haven’t tried those.)