Website Report Automation

I need to automate data printing from a web site. I have a list of hundreds items that I need to pass to this web site (10 to 20 at one time) Once the site responds with the results (The list of items found needs to be stored on memory and or disk from a table generated dynamically by the website) I then select them and click print, after that I select the type of format I need and click on print to PDF. All items print to a single PDF I then need to slip It and name it accordingly (From the previously saved list of results). The pdf generated by this process are searchable (pdf/a) and contain information that need to be extracted (3 lines on information easy found via a text search) Finally the last step is to add a small image to some pdfs wich contain certain keywords I will provide remote access to the credentials of the site. It looks like one or more of the following technologies could be applied to the project Puppeteer NodeJS Node.js Node Selenium Autoit Autoit UserScript JavaScript GreaseMonkey ScreenGrab Data Mining Screen Scraping Browser Automation