How do I add my signature to a PDF document in Acrobat Reader?

Open the PDF in Acrobat Reader. Click 'E-Sign' in the right panel. Select 'Add e-sign' and choose to type, draw, or upload your signature. Place the signature on the document and save.

What is the difference between an 'e-signature' and a 'digital signature' when signing a document?

An e-signature, like the one from Fill & Sign, is a simple electronic mark showing agreement. It's often legally binding. A digital signature is more complex. It uses a digital certificate to prove the signer's identity and that the document has not changed since it was signed. Digital signatures offer higher security and verification, while e-signatures are for general agreement.

If I need to sign many documents every day, can I automate the 'Fill & Sign' process?

No, you cannot automate the 'Fill & Sign' process. This feature is designed for you to manually add your signature to documents. It is a client action, meaning you must perform the steps yourself within the Acrobat application. There is no special tool or API for automatic self-signing.

Why is 'Fill & Sign' useful for everyday tasks like signing a permission slip?

It saves time by letting you sign digitally instead of printing, signing, and scanning. You can sign from anywhere, using your computer or mobile device. It helps keep your documents digital, reducing paper use and making them easy to store.

How does Acrobat ensure my e-signature is secure and cannot be easily copied by others?

Acrobat helps secure your e-signature by embedding it directly into the PDF. Once saved, it becomes part of the document, making it harder to remove or alter without detection. While a simple e-signature isn't as robust as a digital signature with encryption, Acrobat's tools help maintain the document's integrity. Always save your signed PDF to protect your work.

Fill and sign a PDF form with digital certificate-based sign in Adobe Acrobat — How-to & AI prompts

AI prompts

3 ways to ask · copy any one

AExecute — “help me do it”Help me fill out and sign this PDF form using my digital certificate...…+

Help me fill out and sign this PDF form using my digital certificate. The file is [insert PDF file], and my certificate is [insert certificate file].

when the reply comes backWould you like tips on keeping your digital signature safe?

BImprove — “do it better”How can I make my filled and signed PDF form look more professional...…+

How can I make my filled and signed PDF form look more professional and clear using Adobe Acrobat?

when the reply comes backNeed help checking if your digital certificate is valid?

CDecide — “help me choose”Should I use a digital certificate-based signature or a handwritten one...…+

Should I use a digital certificate-based signature or a handwritten one for my PDF form? What are the pros and cons for each in my situation: [describe your situation]?

when the reply comes backWant to know how to send your signed PDF securely?

How to do it

the tool · the steps · what to avoid

1
Open the PDF file you want to fill out in Adobe Acrobat.
2
Select Fill & Sign from the right pane or the toolbar.
3
Click Fill & Sign to activate the tool for self-signing.
4
Click anywhere on the document where you want to add text, then type your information.
5
To add checkmarks or other symbols, use the toolbar options that appear after activating Fill & Sign.
6
To add your signature or initials, click the Sign button in the Fill & Sign toolbar, then choose Add Signature or Add Initials and follow the prompts.
7
Drag your signature or initials to the appropriate place in the document.
8
Save the filled and signed PDF by selecting File > Save.
Best practiceIf you need to reuse your signature, Acrobat lets you save it for future documents.

In the appWith the API

You can resize or move text fields and signatures after placing them by clicking and dragging their edges.

This runs in the Acrobat app - there is no separate API for this task.

Glossary

words on this page

PDFA common file type used to share documents that look the same everywhere.ExampleShe saved the brochure as a PDF so everyone would see the exact same layout and fonts.

Digital CertificateA special file that proves your identity online.ExampleYour web browser uses a digital certificate to confirm a website is legitimate and secure.

SignTo add your signature, showing you agree or approve.ExampleYou sign the rental agreement to confirm you accept the terms and conditions.

The real tasks

the one, listed here

Improve sign‑off certainty across engagements

FAQ

about this task

To fill and sign a PDF form with a digital certificate in Adobe Acrobat, you open the form, fill in the needed information, then use the 'Certificates' tool to add your digital signature. This signature is linked to your digital certificate, which proves your identity.

A digital certificate is like an online ID card that proves who you are. It is needed for signing a PDF because it makes your signature official and trusted, so others know the document really came from you.

Yes, many schools and employers accept digital certificate-based signatures because they are secure and easy to check. Always ask if you are not sure, but most official forms allow this kind of signature.

Typing your name is not very secure, while a digital certificate-based signature uses special technology to prove your identity. This makes your signature much more trustworthy for important documents.

Adobe Acrobat is trusted by many people and companies, and it has built-in tools for using digital certificates. This means your signature will be more likely to be accepted and the process will be easier and safer.

Fill and sign a PDF form with digital certificate-based sign

When to use it

AI prompts

How to do it

Glossary

The real tasks

Who does this

FAQ

Sources

Adobe help