These days almost all forms are distributed online as PDFs. However, when you need to sign one, you normally need to print it and scan it back in for an email, or even worse, use a fax. Luckily, there are apps for that.
PDF Signer allows you to fill out and sign PDF forms. You can enter text in any pre-defined text boxes the form might have, but if the form isn't that advanced, you can enter text in text boxes of your own creation anywhere on the PDF using the "Add Text" tool.
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