I’m not sure how much you know about Zapier integration. But, If you are planning on using “Glide PDF” as a business venture, spend sometime on finding out more about the suggestions helpfully posted for your benefit in the threads above.
If it was what I was thinking like irregular pdfs, then if you have an i0S mobile device, download a Free pdf converter. They will easily convert all your screenshots to PDFs. You don’t need any skills to do that.
Here is a simpler method. You can use your iPhone as a PDF converter. Screenshots are photos on iPhone.