How to Prevent Users from Saving Changes to a Fillable PDF Form
Question details
The user wants to distribute a fillable PDF form that allows others to fill it out and print it, without being able to save their entries over the original master document.
- Product
- Device & OS
- not provided
- Scenario
- Distributing a master fillable PDF form for multiple users to access, fill, and print for administrative or business purposes.
- Observed behavior
- Standard PDF security settings do not reliably prevent users from saving a completed copy over the original file without also blocking their ability to fill it out.
Note that standard PDF security settings cannot reliably prevent a user from saving a local copy of a filled form if they are allowed to fill it out. The most effective approach involves managing file and folder permissions at the operating system level.
Set File and Folder Permissions to Read-Only
Use your operating system's file permissions to ensure the master PDF form cannot be overwritten by users.
Since the PDF format does not have a specific restriction that allows filling fields while completely preventing saving, managing access at the file system level is the most secure method. By making the master file read-only, users can open, fill, and print the form, but any attempt to save will force them to create a new file, leaving your master document untouched.
Find the original fillable PDF form in your computer's file explorer or shared network drive.
Right-click the master PDF file and select 'Properties' (on Windows) or 'Get Info' (on Mac).
Check the 'Read-only' attribute box or set the sharing permissions to 'Read Only' for standard users. Click 'Apply' and then 'OK'.
Ensure the folder containing the master file also has restricted write permissions so users cannot delete or replace the original file with their own saved copy.
Distribute Fresh Copies for Each Use
Prevent altering a master file by never giving users direct access to the original server location.
Manage and Secure PDF Forms with WPS Office
WPS PDF provides a comprehensive set of tools for creating, filling, and securing PDF forms. You can easily manage document permissions, restrict unauthorized editing, and share forms securely without altering the original template.
- 1. Open the Form: Launch WPS Office and open your master PDF form using the WPS PDF tool.
- 2. Set Permissions: Navigate to the 'Protect' tab to manage document encryption and restrict editing permissions if necessary.
- 3. Fill the Fields: Fill in the required fields effortlessly using the interactive form highlight and text tools.
- 4. Print Securely: Click the 'Print' icon to print the completed form directly from the application without saving over the original template.
Frequently Asked Questions
Can I use PDF password security to prevent saving?
No. Standard PDF password security allows you to restrict editing, printing, or copying. However, if a user is granted permission to fill in form fields, the PDF specification does not have a specific restriction designed to prevent them from saving the filled data as a new file or overwriting the original if operating system permissions allow it.
Why shouldn't I use a JavaScript 'reset on save' script?
Relying on JavaScript to clear form fields when a user clicks 'Save' is highly unreliable because users can simply disable JavaScript in their PDF viewer's preferences, bypassing the script entirely. Additionally, it can frustrate users who genuinely need to save a temporary backup copy for their own records.
How do I make a PDF read-only on a shared network drive?
You need to ask your network administrator to set the folder and file permissions on the network drive to 'Read & Execute' for standard users, while explicitly denying 'Write' access. This ensures they can open and fill the form but cannot overwrite the master file on the server.
