Before sharing this personnel file, redact [social security numbers] and [bank details] from the PDF and save a redact…
Open the PDF you want to redact in Adobe Acrobat Pro.
Go to Tools and select Redact.
Click Find and Remove Text.
Enter the word, phrase, or pattern you want to search for in the search box.
Choose the location to search (e.g., current document or all PDFs in a folder), then click Search.
Review the search results and check all instances you want to redact, or use Select All to mark every occurrence.
Click Mark for Redaction to mark the selected instances.
Click Apply Redactions and confirm when prompted to permanently remove the marked content.
CautionRedactions are permanent and cannot be undone after saving.
Best practiceYou can customize the appearance of redaction marks before applying them by adjusting settings in the Redact tool.
Best practiceAlways double-check your search term and results to ensure all sensitive information is covered, especially with patterns like SSNs.
Save the redacted PDF with a new file name.
You can use the Find Text and Redact feature to quickly locate and mark all instances of sensitive words or patterns for redaction throughout your document.
This runs in the Acrobat app - there is no separate API for this task.
Redacting content permanently removes the selected text or image from the PDF, making it unrecoverable. It's like cutting out a piece of paper. Drawing a black rectangle only covers the content visually; the original text or image remains underneath and can often be copied and pasted, revealing the sensitive data. Redaction is secure; a black rectangle is not.
For large documents with many instances of specific patterns like Social Security Numbers or account numbers, use Acrobat Pro's pattern-based auto-redaction feature. This allows the software to find and mark all occurrences automatically. After auto-redaction, it is important to have a second person review a random sample to ensure accuracy.
It is important to sanitize a PDF after redacting because redaction only removes visible content. Hidden data, such as metadata, layers, or revision history, can still contain sensitive information. Sanitizing the PDF strips away all this hidden data, ensuring that no confidential details are left behind even in non-visible parts of the file.
Redaction codes are labels you can apply to redacted areas to explain why certain information was removed, without revealing the information itself. For example, a code could be '[PRIVILEGED]' or '[PII]'. To use them effectively, create a consistent list of reason-codes with your team. This helps maintain clarity and legal compliance across multiple documents and users, making it clear why specific data was hidden.