How to automatically upload files in a website with JavaScript using a bot

moonstar

I have a bot made with python that creates ads for me in a marketplace, it does the whole creation process and also uploads the images using the pyautogui library, clicking on the upload box and selecting the images I want in the system files. For personal reasons of limitations I found with python, I decided to learn JavaScript. Here is my question, is there any possible way to automatically upload the images that I have on my local pc to a marketplace site, without me having to manually select the images or manually uploading them each time the bot creates one ad. I just want it to automatically select the images and upload it to the ad site