HTML to wordpress

Hi,
I have a old html website which is having .html page with image on it and i am planning to move to WordPress.
In WordPress i want to create gallery with image title, caption and description from contents from .html page.
i.e migrate.com/my-sketch.html is now showing as migrate.com/gallery/#jp-carousel-511
How can i still keep url and content same when move to WordPress gallery url?

Thank You