PDF Security & Access Issues

Remove Hidden Information vs. Sanitize Document in Adobe Acrobat

Elise WilliamsElise Williams Nov 3, 2026 870 views

Question details

The user wants to know if Word comments and metadata are retained in PDFs and the difference between Adobe Acrobat's Remove Hidden Information and Sanitize Document tools.

Remove Hidden Information vs. Sanitize Document in Adobe Acrobat
Product
Adobe Acrobat
Device & OS
not provided
Scenario
Securing a PDF document before sharing by removing metadata, comments, and hidden information.
Observed behavior
Users are unsure which tool to use to permanently delete metadata, document properties, and hidden elements when exporting from Word to PDF.
Before you start

Always create a backup copy of your PDF file before using any redaction or metadata removal tools, as deleted hidden information cannot be recovered once saved.

Solution 1

Using the Remove Hidden Information Tool

Use this tool when you need precise control to selectively scan for and remove specific types of hidden data, such as metadata or comments, while keeping others.

The Remove Hidden Information tool scans the document and provides a list of hidden elements. You can then choose exactly which components to strip from the PDF file.

1
Access the Protect tools

Open your PDF in Adobe Acrobat, navigate to the 'Tools' tab, and select 'Protect'.

2
Scan for hidden information

Click on 'Remove Hidden Information'. Acrobat will automatically initiate a scan of the document for metadata, hidden layers, bookmarks, and comments.

3
Select and remove

Review the scan results in the left pane. Check the boxes for the specific items you want to delete, click 'Remove', and then save your document.

Secure PDF Management

Manage and Secure PDFs with WPS Office

WPS Office provides a comprehensive suite for creating, editing, and securing PDF documents. You can easily convert Word documents to PDFs without carrying over unwanted comments, and apply encryption to protect your sensitive data.

  1. 1. Open your document: Open your Word document in WPS Office.
  2. 2. Export to PDF: Go to the 'Menu' and select 'Export to PDF'.
  3. 3. Configure settings: Check your export settings to ensure comments and track changes are not included in the final output.
  4. 4. Apply security: Open the resulting PDF in WPS PDF to apply passwords or permissions for added security.
Seamlessly convert Word documents to PDF without unwanted commentsFully compatible with Microsoft Office formats (DOCX, XLSX, PPTX)Built-in PDF encryption and permission settingsLightweight, fast, and completely free to use
microsoft office alternative - wps office

Frequently Asked Questions

Do Word comments automatically transfer to a PDF?

It depends on your export settings. By default, visible comments might be omitted or converted to PDF annotations, but document properties and metadata from Word often carry over to the PDF file.

Can I recover data removed by the Sanitize Document tool?

No. Once you sanitize a document and save it, the removed hidden information, metadata, and redactions are permanently deleted and cannot be recovered.

What exactly counts as 'hidden information' in a PDF?

Hidden information includes document metadata (such as author and creation date), attached files, bookmarks, hidden layers, deleted text, form fields, and hidden text.

Why should I use Remove Hidden Information instead of Sanitize Document?

Use Remove Hidden Information when you want precise control over what gets deleted (e.g., removing metadata but keeping bookmarks). Sanitize Document is a blanket approach that removes all hidden data at once.