How do you add a digital signature to a PDF?

To sign a document using Adobe Reader, first open the PDF document in the Adobe Acrobat Reader DC application. Click the Fill & Sign button in the right pane. Click the Sign button on the toolbar and select Add Signature to add your signature to Adobe Acrobat Reader DC.

How do I insert a digital signature into a PDF?

Open the PDF file in Adobe Acrobat Reader. Click on Fill & Sign in the Tools pane on the right. Click Sign, and then select Add Signature. A popup will open, giving you three optionsType, Draw, and Image. Once you're done, click the Apply button. Drag, resize and position the signature inside your PDF file.

How do I make a PDF digitally signable?

Within Acrobat, click on the Tools tab and select Prepare Form. Select a file or scan a document. ... Add new form fields from the top toolbar, and adjust the layout using tools in the right pane. Save your fillable PDF form and share it with others, or click Distribute to collect responses automatically.

How do I sign an already signed PDF?

Suggested clip How to Sign a PDF with a Document Signing Certificate - YouTubeYouTubeStart of suggested clipEnd of suggested clip How to Sign a PDF with a Document Signing Certificate - YouTube

How do I attach a digital signature?

Click the File tab. Click Info. Click Protect Document, Protect Workbook or Protect Presentation. Click Add a Digital Signature. Read the Word, Excel, or PowerPoint message, and then click OK.

How do I create a digital signature in Nitro PDF?

On the Protect tab, in the Certify Document group, click the arrow under Sign, and select a signature from the gallery. To sign a document, you must first have a digital ID. ... Click on the page where you would like to place your signature. Nitro Pro prompts you to save the PDF file with the digital signature.

How can I create a digital signature?

Click the link. Your document should open in an electronic signature tool such as DocuSign. Agree to electronic signing. ... Click each tag and follow the instructions to add your digital signature. Verify your identity and follow the instructions to add your digital signature.

How do I create a digital signature in Adobe?

In Acrobat, click the Edit menu and choose Preferences > Signatures. On the right, click More for Identities & Trusted Certificates. Select Digital IDs on the left, and then click the Add ID button . Select the option A New Digital ID I Want To Create Now, and click Next.

Which key is used to create a digital signature?

Digital signatures use asymmetric or public key encryptions to create their signatures. A public key encryption involves a key pair: one public and one private.

How do I create a digital signature in Word?

Click the File tab. Click Info. Click Protect Document, Protect Workbook or Protect Presentation. Click Add a Digital Signature. Read the Word, Excel, or PowerPoint message, and then click OK.

Functionality index

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Up to 100 MB for PDF and up to 25 MB for DOC, DOCX, RTF, PPT, PPTX, JPEG, PNG, JFIF, XLS, XLSX or TXT

Based on 12500+ reviews

Last updated on Jan 19, 2026

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pdfFiller scores top ratings on review platforms

What do you like best?
It can edit and sigh.We can use it as daily works.
What do you dislike?
It can not merge more than two pages. If we have 2 or more pages to merge, it failed.
What problems are you solving with the product? What benefits have you realized?
None

User in Defense & Space

Efficiency When you have no device to print out and thrn scan..you can use this software. It is very good software since you can edit signs and print document without having device to print out. I do not have any leat because it is good at all since it has excelent advantages to me.no disadvantage at all.

Saidi N.

The go-to for creating useful PDF files This software has become a go to for pretty much every PDF file I have to create. I have used it to create forms that our midsize business uses on a daily basis. I find it to be very user friendly and a quick and easy way to get what you need. It has positively affected our costs of printing and paper, and it's good not only for our budget but for the environment too! Customer service is not the fastest and sometimes I have a question that needs to be resolved that day. I read online that it depends on the plan you have purchased and I don't think that is the best way to treat your customers.

Elena D.

The application itself is amazing.. The application itself is amazing... everything works great... awesome features... easy to use... convenient... BUT... as with all of these services... they threaten you with a ridiculous amount ($96 for the basic annual subscription) if you forget to cancel your membership... and if I pay $96 I want lifetime access to something... or I'm not doing it, period. That's insane. It costs them next to nothing to maintain this website... it's just advertising. Oh, and they come up as a free online editor but then you gotta sign up for the trial and everything else... the hassle never ends. If this place let everyone use it for free they could make a killing on all the advertising they could sell... and everyone would get a free editor... anyway, I digress... enjoy the app!

Michael Lutz

First-timer LOL but I still recognize… First-timer LOL but I still recognize top-notch service and support pdffiller has just as much concern for the small orders as for the large orders thank you all involved

broeric

I think this is a very good software. It is easy to fill and sign a document or to create your own. I am having some trouble finding a document that I started and did not finish. And I would like to learn everything that it offers.

Lisa F

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