Content out. Not just covered.

using LMKit.Document.Pdf;

var request = new PdfRedactionRequest();
request.SearchTerms.Add("John Doe");
request.SearchTerms.Add("4111 1111 1111 1111");

var report = PdfRedactor.RedactToFile("contract.pdf", "contract_redacted.pdf", request);

Console.WriteLine($"Matches: {report.SearchMatches}, glyphs removed: {report.RemovedGlyphs}");

using LMKit.Document.Pdf;
using LMKit.Graphics.Geometry;
using LMKit.Graphics.Primitives;

var request = new PdfRedactionRequest();
request.Areas.Add(new PdfRedactionArea(pageIndex: 0,
    Rectangle.FromSize(left: 72, top: 90, width: 220, height: 30)));

var options = new PdfRedactionOptions
{
    FillColor = Color32.FromRgb(0x333333),   // fill box colour; alpha honored
};

var report = PdfRedactor.RedactToFile("report.pdf", "report_redacted.pdf", request, options);

using LMKit.Document.Pdf;

// Bytes in, redacted bytes plus report out. No temp files.
byte[] source = await httpClient.GetByteArrayAsync(documentUrl);

var request = new PdfRedactionRequest();
request.SearchTerms.Add("CONFIDENTIAL");

PdfRedactionResult result = await PdfRedactor.RedactToBytesAsync(source, request);

await blobStore.UploadAsync(result.Data);
Console.WriteLine($"Content removed: {result.Report.ContentRemoved}");

using LMKit.Document.Pdf;
using LMKit.Graphics.Geometry;

var request = new PdfRedactionRequest { UseRegularExpressions = true };
request.SearchTerms.Add(@"\bINV-\d{6}\b");   // every invoice number
request.Areas.Add(new PdfRedactionArea(pageIndex: 0,
    Rectangle.FromSize(left: 72, top: 90, width: 220, height: 30),
    label: "Client name"));          // drawn as outlines, adds no text

var options = new PdfRedactionOptions
{
    // Metadata, attachments, JavaScript, bookmarks, XFA, thumbnails...
    Sanitize = PdfSanitizeTargets.All,
    // VerifyRedaction is on by default: residual text throws, nothing is written.
};

var report = PdfRedactor.RedactToFile("statement.pdf", "statement_redacted.pdf", request, options);
Console.WriteLine($"Verified: {report.Verified}, labels drawn: {report.LabelsDrawn}");