Where `:width` and `:height` can be numbers in pixels or `auto`.
The `:url` is the URL of the image to be resized and should be URL encoded, which can be done in JS with `encodeURIComponent`(). See [MDN ref](https://developer.mozilla.org/en-US/docs/Web/JavaScript/Reference/Global_Objects/encodeURIComponent).
Example encoded URL for [https://memori.ai/logo.png](https://memori.ai/logo.png):
You can also specify a format using the querystring `?format=` and indicating one of the following: `avif`, `gif`, `heif`, `jpeg`, `jpg`, `pdf`, `png`, `svg`, `tiff`, `webp`. (Note: Experimental!)