What's the Best Way to Sign PDF Documents in Chrome without Printing?

I'm tired of downloading, signing and then uploading PDF files.  Not sure what is the easiest secure way to do it online, any suggestions?

I recently used cudasign on my iPad at someone's recommendation to sign a PDF file. Worked fine, although my online signature was unintelligible.

Here's another option (a message from my boss):

The easiest way I know of to add signatures from a Mac is to save the document to PDF, open it in Preview then Tools --> Annotate --> Signatures --->  If you don't already have signatures stored, you use "Manage signatures" to get to an option of either scrawling your signature on the trackpad or holding up a signature to the Mac's camera to get that saved.Then any time you need a signature, just go to the one you want, it will appear on the PDF. Scale it and move it into place.Voila!

Thanks, I should have clarified.  For better or worse, I have a PC.

Doesn't matter if it's PC or Apple. Adobe has a signature tool. I don't have it in front of me right now, so I can't recite all the steps, but you can search for the instructions. You my need the Pro version. 

Thank you, but unfortunately Adobe Pro is needed, and it costs $12-14 per month.  I was hoping for a less expensive solution.

http://www.documentsnap.com/acrobat-reader-sign-pdf/  

or

http://www.howtogeek.com/164668/how-to-electronically-sign-documents-without-printing-and-scanning-them/

or

http://www.howtogeek.com/215485/sign-pdf-documents-without-printing-and-scanning-them-from-any-device/

Thanks, Steven.  Unfortunately, HelloSign is no longer free after 3 signatures per month, but Adobe Reader looks like it has possibilities.  I'll give it a try. ETA It works!