Write some software

I need you to develop some software for me. I would like this software to be developed for Linux . Hi. I have a wordpress installation on a Linux server which allows users to upload PDF from the front end. Some times, the PDF uploaded by the user is non searchable. I need a system to:- 1. Detect whether the newly uploaded PDF is in searchable format. 2. If not, convert the PDF to a searchable format and replace the original file with the same file name. There is a tutorial in Google cloud platform for Oct of files but it don't watch the upload folder and do it automatically. I need the process to be automated. This link may be helpful:- [login to view URL]