Remove Confidential Information using .NET PDF API library

Use the Documents for PDF API Library to remove confidential and sensitive content from PDF Documents, built-in C#, VB.NET, or any other .NET language and add multiple redactions in a PDF document.

  • Easily remove PDF text or images permanently
  • Protect personally identifiable information (PII)
  • Prohibits users to copy/paste/print redacted content
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Confidential Content

Safely and efficiently apply redaction to remove content access for confidential or selected material. The content is removed entirely from PDF and cannot be copied or pasted to any other document.


Use a single line of code to redact individual or multiple areas of text or images, all at one time.

Online PDF Viewer

Apply redaction properties on one or several areas marked for removal in our JavaScript GrapeCity Documents for PDF Viewer. Copy and paste are disabled after content is redacted.

Find and Redact

Find specific text, words, or phrases in one or more PDF documents that contain searchable text and mark it for redaction and removal.


Redact the customer's information to share it for review with other members of an organization.

Legal Contracts

Remove confidential content from legal contracts before publishing.

Redact Content

Redact personally identifiable information like Social Security Number (SSN)

Jury Instructions

Redact sensitive materials in jury instructions that affect ongoing investigations.

Hide Employee Data

Remove text, images or any other content from documents before publishing or sharing.

Redaction Demos

GcPDF Annotation Overlay

Overlay Text and Color

Want to apply text like "Confidential" or redaction with some color? Apply OverlayText and OverlayFillColor properties that will appear over the redacted content, once removed or blocked out from the PDF.

Send for Redaction using the GcPDF Viewer

Send for Redaction

Apply MarkFillColor and MarkBorderColor properties to mark confidential areas for redaction.

Repeat Overlay Text with GcPDF Viewer

Repeat Overlay Text

Apply repeated text over redacted content using OverlayTextRepeat.

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