These days, digital signature is the most efficient way to sign a document and seal a deal, also it is environment friendly. There are different types of digital signature, and the safest way is to sign with certificate in the signature block, like for CAC.

To add signature block to PDF for someone else to sign, advanced PDF editor is the best answer. But there is more than one way around it, as major operating systems let us add signature block in different ways, also there are tools in our web browser to add a signature filed.

  1. Add Signature Block to PDF in Adobe Acrobat
  2. Add Signature Field to PDF Online Free
  3. Add Blank Signature Block to PDF Free on Mac

Add Signature Block to PDF in Adobe Acrobat

There are specific tools and tricks we can use to add signature block to PDF for free in the following paragraphs, but these free options are not always the most convenient approach, especially they don’t support certificate signature, this is where advanced PDF editors come in handy. Among them, Adobe Acrobat is broadly considered professional and trustworthy, offering the most comprehensive feature of adding a digital signature: add signature filed or block, request others to sign, require users to sign with CAC or certificated ID.

For more than 20 years, Adobe has led the PDF making and editing, giving your PDFs a professional look and feel with a tons of advanced tools and options. You can use it to edit, create, export, scan, OCR, protect, redact, share, review, compare, customize, etc.

Add digital signature field to your PDF with Acrobat now. A perpetual subscription usually costs high, but you can get it on a monthly subscription for only $12.99 or $19.99 and cancel at any time you don’t need it.

Look at the steps to add signature block to PDF in Acrobat

  1. Get the free trial of Adobe Acrobat.
  2. Head to Tools>Forms & Signatures>Prepare Form.add signature block adobe 1
  3. Select and import the PDF file to sign.add signature block adobe 2
  4. Hit the Add signature block icon to insert.add signature block adobe 3
  5. Use properties to add a signature block in wanted look.add signature block adobe 4

Add Signature Field to PDF Online Free

It’s true that Acrobat can do everything in a PDF. But if you feel stressed to install it at this moment, you can just make use of some useful online utilities out there: they run inside your browser, free of charge.

1. signNow

It offers a free but efficient workflow to review and sign files in PDF format. There’s a list of options to pick from and you can customize a host of settings, from the signer, the signature to button, even formula.

signNow is free to use but you have to sign up, and take a premium account to get extra tools.

Look at the steps to add signature block to PDF online free

  1. Visit app.signnow.com.
  2. Upload the file.add signature block online 2
  3. Choose Signature.add signature block online 3
  4. Add signature block to your PDF and click Download button to save it to your computer.add signature block online 4

2. pdfFiller

Adding signature field to PDF is pretty straightforward in pdfFiller, but its signature adding is something else, user can only add text filed that allows users to fill in a signature, no certificate is supported.

Look at the steps to add signature field to PDF online free

  1. Visit pdffiller.com in your web browser.add signature block online 5
  2. Head to Text box and add a block to it.add signature block online 6
  3. Also you can input texts like Sign here as a indicator.add signature block online 7
  4. Save the changes and download the file.

Add Blank Signature Block to PDF Free in Mac Preview

Using an external app or tool to add signature field to PDF is a great approach, but if you want to do this with built-in apps in your system, it is possible. macOS offers a native tool to edit a PDF, that is Preview, it cannot add a signature block as Acrobat or signNow, but it can add a box or input text to request someone else to sign by printing out and signing on paper, or draw a signature.

Look at the steps to add signature block to PDF Free in Mac Preview

  1. Open PDF in Preview.
  2. Show markup toolbar, add a rectangle box to your PDF as the place where to sign.add signature block preview 1
  3. Also you can input texts to request others to sign in the right place.add signature block preview 2
  4. Head to File>Save.

Get Your PDFs Signed Securely!

Manually printing and signing a PDF could be tedious, adding signature block to PDF for someone else to sign electronically can enhance efficiency in your workflow and bring more simplicity.

So there you have the best tool to add a PDF signature block! Acrobat makes it easy to review and sign PDF that will wow your partners, boost reliability of your business.