I must hand out map prints at a public meeting tonight but need to prevent accidental edits and remove owner names on …
Complete all redactions and save the PDF with a new filename.
CautionRedacted content is permanently removed only after applying and saving; unsaved changes can be recovered.
Open the redacted PDF in Adobe Acrobat Pro.
Go to the File menu and select Properties.
In the Properties window, click the Security tab.
Set the security method to Password Security.
Check Restrict editing and printing of the document and set a permissions password.
Best practiceChoose a strong password and record it securely; without it, editing restrictions cannot be changed or removed.
Under permissions, select None for changes allowed and disable copying of text, images, and other content.
Click OK and re-enter the permissions password when prompted.
Save the PDF to apply the security settings.
Best practiceAs a best practice, verify the secured PDF by reopening it and confirming that editing and content extraction are disabled.
After applying password security, editing and recovering redacted content from the PDF is blocked for all users without the password.
This runs in the Acrobat app - there is no separate API for this task.
Redacting content in Acrobat Pro means the information is truly removed and cannot be recovered. If you just draw a black rectangle over text, the text is still there underneath. Someone can select all text, copy it, and paste it into another document to see the hidden information. Redaction is a secure way to remove data, while covering it is not.
Sanitizing a PDF after redaction is important because redaction only removes visible content. Hidden data like metadata, layers, or revision history might still contain sensitive information. Sanitizing removes all this hidden data, making sure your document is completely clean before sharing it.
For many items like Social Security Numbers or account numbers, use Acrobat's pattern-based auto-redaction. This feature can find and redact all matching patterns automatically. After it's done, have another person check a random sample of the document. This helps make sure all sensitive data is properly removed and no mistakes were made.
Redaction is the process of permanently removing sensitive or confidential information from a PDF document. It is used to protect privacy and comply with rules when sharing documents. For example, you might redact names, addresses, or financial details before making a document public.