How Do I Get Width and Height of Images Uploaded to AWS S3?

I’m uploading images to the AWS S3 file store using the Wappler “Sign Upload Url” server action.

In this process, i want to store the image width and height as I need it to specify in the OpenGraph meta tag data.

I’ve tried using the “Get Image Size” server action to do this, specifying the path to the file on the S3 server, but I get the message “Invalid Path” from this action, even though the path to the file on the S3 server is correct.

Is the Get Image Size action just for images stored locally?

If so, how can I store the image dimensions of an image I’m uploading directly to the S3 server?

Many thanks,
Antony.