How do I change the sign on a PDF?

Open the PDF document or form in Acrobat or Acrobat Reader, and select Fill & Sign from the Quick action toolbar. From the signature dialog, select the cross (X) sign beside the previously added signature. To add a replacement signature to the document, select Add Signature.

How do I unlock a signed PDF for editing?

Click the 'Lock' icon in the upper-left corner of the page. Click the link labeled: Permission Details. In the "Security Method' drop down, select: No Security. Enter your unlock password and click the OK button three times.

Can I edit a PDF after it has been signed?

Legal aspects From a legal point of view, a signed document will not be valid if there is any evidence that it was altered after signing. Most of the time, it's not even possible to modify a signed PDF because the content will be locked, and the user will get a warning message.

How do I edit an existing Adobe signature?

Change your e-signature in new Acrobat From the signature dialog, select the cross (X) sign beside the previously added signature. Select the X sign. Select the X sign. To add a replacement signature to the document, select Add Signature.

How do I edit a PDF without removing digital signature?

How to Edit Signed PDF Online Launch PDFgear online. Visit the official PDFgear online editor through any of your preferred browsers. Add your signed PDF file to the tool. Click on Upload PDF files to help add your PDF file to the tool and browse your file. Edit the file. Edit the PDF file. Save the file.

How do I make a PDF editable after digital signature?

Once you have added all the necessary fields on the PDF, right click on the 1st Signature Field and choose Properties and click on the Signed Tab. 13. Click on the Pick… Button to choose the fields that are to remain editable after the first digital signature is applied to the document.

How to edit a PDF file in smallPDF?

Upload your document and navigate to the Edit tab. Click on the text you'd like to edit and make your changes. You may need to sign up for a 7-day free trial to access this feature, but you can cancel anytime.

How do I edit an already signed PDF?

Can I edit a PDF that I signed? If you're the only one signer, you can remove the signature and then work on the document or edit the source document. To remove your signature, right-click the signature and then choose Clear Signature.

Home
Functionality index

Switch from SmallPDF to pdfFiller for a Modify Sign PDF Solution For Free

Drop document here to upload

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 Dec 31, 2025

Document creation is just the beginning

Learn more about security

Create and edit documents with a trusted solution

Try easy-to-use tools for all your document management needs.

Upload your document

pdfFiller scores top ratings on review platforms

I thought I was purchasing a one-month subscription (I didn't select the correct button prior to the check-out process and was not advised of the amount before I hit Submit). Would REALLY like a refund of the yearly subscription - am very happy to pay the19.99 for one month. Please...

Robin G

These guys are great I signed up for… These guys are great I signed up for the free 30 day trial. I barely looked at the program just didn’t have time And there was $120 charge They were very professional about it removed her right away I will use them soon

Jerry Jones

Cool az Cool az, easy to nagigate, edit and save to your device. For the price, way better than Adobe who try to make you pay pay pay, have outrageously pricey monthly payments n bla bla bla. This is way more affordable Thanks team Nga mihi Sonny

Sonny Kameta scarf

PdfFiller review It edits pdf that other application or websites cannot do.It is convenient to make multiple pdf documents.I like the idea that i can also sign any document using pdffiller. The fact that you have to pay for it in order to use the free version.

Vionah O.

Great program Great program. Let's you edit PDF, sign documents, send documents to clients or other persons to sign electronically. Also gives access (at least my package) to some limited legal forms which is helpful. Would highly recommend.

Krysten Patel

Perfect for merging multiple JPG images into a compact PDF This app / web page allowed me to easily merge six JPG image files (each 2550x3300 pixels, some included photos) into a single compressed PDF document that was small enough (7MB) to be easily shared as an email attachment. Did exactly the job I wanted it to!

jeremy

Show more Show less

Watch pdfFiller eSignatures in action

Check out a quick video tutorial that shows how to create and place your signature or send a document for signing.

Related features

Create and edit documents with a trusted solution

Try easy-to-use tools for all your document management needs.

Upload your document