Types of redactable data

Last updated on Aug 16, 2025

Learn more about the various categories of data that can be redacted using Adobe Acrobat Pro.

Acrobat Pro offers comprehensive features to safeguard confidential content in PDF documents. PDFs may contain sensitive information in multiple forms, from visible text to hidden metadata. Recognizing these diverse data categories allows you to implement the right redaction strategy to ensure document security and minimize the risk of unintended information disclosure.

Data Type

Description

Visible Text

Words, phrases, and paragraphs visible in the document

Images

Photos, graphics, and other visual elements

Form Fields

Fillable fields in interactive PDF forms

Metadata

Document information such as author’s name, keywords, and copyright details

File Attachments

Any files of any format attached to the PDF

Bookmarks

Links with representational text that open specific pages in the PDF

Comments and Markups

All comments added using comment and markup tools, including attached files

Form Field Data

Form Fields including Signature fields and associated Actions and calculations

Hidden Text

Text that is transparent, covered by other content, or matches the background color

Hidden Layers

Multiple layers within PDFs that can be shown or hidden

Embedded Search Index

Index that speeds up searches within the PDF file

Deleted or Cropped Content

Removed content that is no longer visible, such as cropped pages or deleted images

Links, Actions, and JavaScripts

Web links, Actions added by wizards, and JavaScripts throughout the document

Overlapping Objects

Objects that overlap, including images, vector graphics, gradients, and patterns