From my understanding, either you want to make your hand-written signature into a PDF file OR you want to insert your signature into a PDF. Here’s my answer for the first version. 1. Change your scanner settings first and make sure that the output is PDF. Do this by going to your computer’s devices then select the scanner. 2. Change the profile setting (either photo or document can be selected). Choose document to save it as a PDF file. 3. Create your signature on a paper, put it on the device and click scan. When done, you will notice that it’s already scanned as a PDF file. Note. On some scanners, you don’t need to go to the computer devices as the software that comes with the scanner often has an option for JPG / PDF shown before scanning. The second version, where you insert your signature into a PDF was answered and can be found from this thread. How do I do a digital signature in PDF? Please note, you can’t scan your signature and automatically place it on a document already. There are specific steps to be taken, which were given different answers from various people.
Here are some useful resources on online or PDF conversion of.AI a) — The best and easiest way) — Another easy & powerful way to read and convert your AI files to PDF. ) — Another easy step-by-step guide, if it's just reading. ).) (For help on finding & reading.AI files) — Another step-by-step guide. .) (Annotating.AI file with InDesign) ) (For getting PDF files from Google Drive to AIV) — Another step-by-step guide. ) (For getting PDF files from Google Drive to AIV) — Another step-by-step guide.