I need an advice for web developpment

I want to code a website, quite simple indeed, showing 7 elements: one image (that will be changing), and 6 buttons (left, right, up, down, backwards, forwards), as shown in the picture: https://ibb.co/TBXWBxH

The website should be able to "read" a 6 columns file, which will have the following format (please take a look to the example file I have put here https://fromsmash.com/mudlckcXLB-c0)

with: "ind_img_x" being the index for image x (numeric index) "url_img_x" being the string containing the web address for image x

• The file will control which image will appear accordingly with the button that is pressed. For example: if the image displayed is "img_2", and the user press the "down" button, then the website will show the image 77452, and wait for the next button to be pressed.

• The file will be rather big, able to contain several million of lines (for example 10 millions of lines).

• I shold be able to update the file from time to time.

• The web site will have to be able to get each image from the web (by means of the url in the file):tThe url data may consists of strings quite long (as some url you might find for images on the web). And the website has to be able to read this very long strings (and sometimes complicated) urls.

Would somebody please give me some advice about which will be the best web developing language I will have to be using? Java? Javascript? Sql? Do you think I'll be able to drop the file into the server as a text file, and ask the web site to read it each time, or that I'll have to put the data in a database?

I look forward to hear any of the advices you guys may have.

Thank you very much!