PDF Security & Access Issues

How to Prevent Recipients from Editing a PDF Before Signing

Bushra Parveen Oct 22, 2026 869 views

Question details

The user needs to lock a completed lease PDF so recipients can sign it without being able to alter the already filled form fields.

How to Prevent Recipients from Editing a PDF Before Signing

Product: PDF Editor
Device & OS: not provided
Scenario: Sending a completed lease document for a digital or electronic signature.
Observed behavior: The recipient is currently able to click on and change the completed form fields before adding their signature.

Before you start

Ensure you have saved a backup copy of the original editable PDF just in case you need to make corrections later. Also, confirm that your chosen method leaves the signature area accessible for the recipient.

Solution 1Recommended

Flatten the PDF Document Before Sending

Flattening a PDF merges interactive form fields with the main document layer, making the text uneditable while preserving the visual content.

This method is highly effective because it entirely removes the interactive properties of the form fields. The text becomes part of the background image of the page.

Open the completed document

Launch your PDF viewer or editor and open the completed lease PDF.

Locate the Flatten option

Look for a 'Flatten' option in your PDF editor. If this is not available, you can use the 'Print' function.

Print to PDF

Select 'Print' and choose 'Print to PDF' or 'Save as PDF' as your printer. This will generate a new document where the form fields are no longer interactive.

Add a signature field (if needed)

If your recipient requires a specific digital signature box, open the newly flattened PDF and add a new signature field, then save the document.

Test Before Sending: Always test the recipient experience by opening the final document yourself to ensure text fields cannot be clicked or edited.

Solution 2

Set PDF Permission Passwords to Restrict Editing

Use PDF security settings to restrict document editing while explicitly allowing signatures.

Secure Your PDFs with WPS Office

Easily Lock PDF Forms and Restrict Editing in WPS Office

WPS Office provides powerful PDF editing and security tools, allowing you to easily flatten forms, set permission passwords, and safely collect signatures without worrying about unauthorized changes to your document.

1. Open the PDF: Launch WPS Office and open your completed PDF form.
2. Access Protection Tools: Navigate to the 'Protect' tab on the top ribbon.
3. Encrypt the Document: Click on 'Encrypt' and check 'Set password to restrict editing and printing'. Select 'Allow filling in forms and signing' from the dropdown menu if you want them to sign digital fields.
4. Flatten via Print: Alternatively, to fully flatten the document, go to 'Menu' > 'Print', select 'WPS PDF' as the printer, and save the newly generated file.

Fully compatible with standard PDF and Microsoft Office formatsOne-click form flattening and robust password encryptionComprehensive suite for managing PDF, Word, Excel, and PowerPoint filesLightweight and completely free to download

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Frequently Asked Questions

Will flattening a PDF prevent the recipient from signing it?

Flattening removes all interactive form fields. If the signature field was a digital form field, it will also become static. You should either add the signature field back after flattening or use permission passwords instead of flattening if digital signature fields are required.

Can someone bypass the editing restrictions on a PDF?

If a PDF is protected with a strong permissions password, standard PDF editors will enforce the restriction and prevent editing. However, flattening is often considered a safer alternative for completed forms as it permanently removes the underlying interactive field data entirely.

How do I know if my PDF is successfully flattened?

Open the PDF in your standard viewer and try clicking on the fields you previously filled out. If no text cursor appears and you cannot highlight or edit the text within those boxes, the PDF is successfully flattened.

PDF Troubleshooting