Class PdfRedactor
True redaction: the content inside the given areas is removed from the page content (text glyphs, image pixels, vector graphics, annotations, form fields, also inside form XObjects) and covered with boxes. The document must then be saved completely (not incrementally), so that the removed content is not kept in older revisions.
public static class PdfRedactor
- Inheritance
-
PdfRedactor
- Inherited Members
Examples
using var doc = PdfDocument.Open("contract.pdf");
doc.RedactText("John Smith");
doc.RedactText(new Regex(@"AT\d{2}(?: ?\d{4}){4}")); // IBANs
doc.GetPage(1).Redact(new[] { new PdfRectangle(72, 700, 300, 720) });
doc.Save("contract-redacted.pdf");
Methods
ApplyRedactions(PdfDocument, RedactionOptions?)
Applies all Redact annotations of the document and removes them. The /OverlayText of an annotation takes
precedence over OverlayText; all other settings come from options.
public static RedactionResult ApplyRedactions(PdfDocument document, RedactionOptions? options = null)
Parameters
documentPdfDocumentoptionsRedactionOptions
Returns
MarkForRedaction(PdfPage, PdfRectangle, string?)
Marks an area for redaction with a Redact annotation (reviewable before ApplyRedactions(PdfDocument, RedactionOptions?)).
public static PdfAnnotation MarkForRedaction(PdfPage page, PdfRectangle area, string? overlayText = null)
Parameters
pagePdfPageareaPdfRectangleoverlayTextstring
Returns
Redact(PdfPage, IEnumerable<PdfRectangle>, RedactionOptions?)
Redacts areas (in default user space, i.e. page coordinates) of a page.
public static RedactionResult Redact(PdfPage page, IEnumerable<PdfRectangle> areas, RedactionOptions? options = null)
Parameters
pagePdfPageareasIEnumerable<PdfRectangle>optionsRedactionOptions
Returns
RedactText(PdfDocument, string, StringComparison, RedactionOptions?)
Redacts every occurrence of text in the document.
public static RedactionResult RedactText(PdfDocument document, string text, StringComparison comparison = StringComparison.Ordinal, RedactionOptions? options = null)
Parameters
documentPdfDocumenttextstringcomparisonStringComparisonoptionsRedactionOptions
Returns
RedactText(PdfDocument, Regex, RedactionOptions?)
Redacts every match of pattern (matched per text line).
public static RedactionResult RedactText(PdfDocument document, Regex pattern, RedactionOptions? options = null)
Parameters
documentPdfDocumentpatternRegexoptionsRedactionOptions