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That would require a lot of time and effort to convert all those responses into separate PDFs. This is where JotForm PDF Editor offers a helping hand. It automates the PDF creation process so you won’t have to do any manual work
PDF editor Chrome extension has changed the game of PDF editing and management. They keep PDF operations a few clicks away, and you can compress, edit, annotate, share, and e-sign PDFs using them even without installing. Here is a list of the top 11 PDF editor Chrome extensions that can help you edit PDFs online. 
Okular PDF viewer has this built-in with annotations. Open the PDF you want to sign, select reviews on the bar to the left, select the third option on the pop up menu that says, 'freehand line.' Draw out your signature. If you want it black ink rather then neon green, select 'Settings' from the menu, select 'Configure Okular,' select 'Annotations' button on the left