If you want to add signatures, the best option is to use a PDF viewer that supports that directly (FoxIt Reader, for one). That saves the original PDF plus an annotation for the signature.
Second best is print using "Save as PDF". That saves the PDF as processed through the browser's PDF engine (PDFium, in the case of Chrome or Edge).
Worst choice is usually print using "Microsoft Print To PDF". That saves the PDF processed into a more generic way. Often the original text characters are replaced by drawings, and the final file size can be 10x what you expect.
Second best is print using "Save as PDF". That saves the PDF as processed through the browser's PDF engine (PDFium, in the case of Chrome or Edge).
Worst choice is usually print using "Microsoft Print To PDF". That saves the PDF processed into a more generic way. Often the original text characters are replaced by drawings, and the final file size can be 10x what you expect.