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Instantly customize your PDFs any way you want, or start fresh with a new document.

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Add fillable fields to your PDFs and share your forms with ease to collect accurate data.

Save reusable templates
Reclaim working hours by generating new documents with reusable pre-made templates.

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Forget about printing and mailing documents for signature. Sign your PDFs or request signatures in a few clicks.

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For pdfFiller’s FAQs
Below is a list of the most common customer questions. If you can’t find an answer to your question, please don’t hesitate to reach out to us.
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How to modify digital signature in 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 add a digital signature to a PDF invoice?
How to add a digital signature to a PDF document with Adobe Acrobat Open your document in Adobe Acrobat. Click the Tools tab and scroll down to the Forms and Certificates section. Click on Digitally Sign from the new options bar. Select the digital signature you want to use and click Continue.
Can you edit a PDF that has been digitally signed?
When you sign a PDF using your digital ID, the PDF becomes read-only for others. If you received a PDF digitally signed by others, you can sign it, but can't edit it. While signing a PDF, if the signer chooses to lock the document after signing, the document becomes read-only for everyone, including the signer.
How to edit a PDF with digital signature?
To resolve this, follow these steps: Step 1: Open the PDF Document. Step 2: Access the "Prepare Form" Tool. Step 3: Select Form Fields for Editing. Step 4: Open Form Field Properties. Step 5: Unlock the Form Fields. Step 6: Finalize Changes. Step 7: Preview and Save. Step 8: Save and Close the Document.
How do I add a digital signature field to a PDF?
How to add a signature block to a PDF Open the PDF with Adobe Acrobat. Select Tools at the top left of the screen. In the Forms & Signature sections, choose Prepare Form. Select Start. Choose the Add a Signature block icon from the tools ribbon. Move your cursor to where you want to place the block and click.
How to update digital signature in 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.
Why can't I edit a PDF after signature?
Resolution Open the PDF document in Adobe Acrobat. Select the "Prepare Form" tool. Select the form field(s) to unlock. Open the form field properties window. Uncheck "Locked" checkbox in bottom-left corner. Uncheck "Read Only" checkbox. Re-check "Locked" checkbox and select "Close"
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