 Hey, I just sent you an important PDF file. Could you please sign it and send it back to me right away? Sure, but how do I sign the PDF? I have never done it before. It's very simple. There's an amazing tool that allows you to add a signature on a PDF document. Just download Sistwake PDF Editor on your Windows PC. I'll also add the link in the comments below for you guys. Once installed, click on Open PDF and open the PDF file you want to sign. Now click on Edit PDF option at the top and then click on Sign PDF. Here in this box, draw your signature. You can also upload the image of your signature and then hit Apply. Wasn't this easy? If you found this video helpful, do like and share.