Advice on a Converter [closed]

I'm a beginner at all of this so I need some help on my project. I am planning to make a converter that converts numbers into images. I already have the images that will be converted. So if I type "7" onto the field, an image that has 7 will get pulled. I am not sure how to do it. I have some experience in HTML, CSS, JavaScript and Python, will I have to use another language or what can I do?

Some help would be appreciated.

edit 1: I already know how to make do the large part of it, I just don't know how to make it so that when there's an input, the output would be a designated image.