collidingScopes/collidingScopes.github.io ? reverse-engineered prompt

Build me a simple web app that lets people turn a photo into a kaleidoscope style animation right in the browser.

I want to be able to upload an image, see the effect live on the page, and adjust it a little if possible, like the look, speed, or how the mirrored sections move. It should feel fun and visual, not complicated, and work without sending the photo anywhere.

If it makes sense, add a way to export the animation as a video or clip so I can save and share it. Keep the page clean and easy to use, with the animation front and center. Use plain HTML, CSS, and JavaScript, and look up current docs online if you need to.