Just enter a list of albums in "Artist - Title" format and render that list to an image. If there is an incorrect or missing cover anywhere, you can use a different cover art by adding a pipe ("|") and the url to an image behind the album
Bathory - Octagon Universe - Universe|https://www.metal-archives.com/images/6/1/2/7/61278.jpg Morbid Angel - Illud Divinum Insanus|https://www.metal-archives.com/images/3/0/2/9/302987.jpg
Charts are not stored anywhere.
This page just converts a text list into an image. You need to save your list somewhere else, use Simplenote or whatever