GroupDocs.Redaction for .NET helps your .NET apps secure documents by hiding sensitive content.
// Mask image content in EXCEL
// Load document using Redactor
using (Redactor redactor = new Redactor("input.xslx"))
{
// Set up overlay size and color
Size replacement_size = new Size(100, 100);
var replacement_options = new RegionReplacementOptions(Color.Blue, replacement_size);
// Select area to hide
Point replacement_point = new Point(200, 200);
var redaction = new ImageAreaRedaction(replacement_point, replacement_options);
// Apply and save changes
redactor.Apply(redaction);
redactor.Save();
}
GroupDocs.Redaction for .NET helps you hide or erase sensitive content in various document formats. Protect data while keeping documents easy to use.
Find sensitive text and replace it to protect private data in your documents.
Cover full images or selected parts with overlays to keep visuals private.
Erase hidden metadata fields to avoid accidental information leaks.
// Open file for editing
using (Redactor redactor = new Redactor("source.xslx"))
{
// Define overlay size, color, and placement
Size replacement_size = new Size(300, 30);
var replacement_options = new RegionReplacementOptions(Color.Blue, replacement_size);
Point replacement_point = new Point(20, 125);
var redaction = new ImageAreaRedaction(replacement_point, replacement_options);
// Target a specific image section on page one
redaction.Filters = new RedactionFilter[] {
new PageRangeFilter(PageSeekOrigin.Begin, 0, 1),
new PageAreaFilter(new Point(0, 300), new Size(600, 600))
};
// Apply overlay to mask the image
redactor.Apply(redaction);
// Save the final document
var save_options = new SaveOptions() { AddSuffix = true, RasterizeToPDF = false };
var outputPath = redactor.Save(save_options);
}
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Use .NET to hide or delete sensitive information in EXCEL files. A trusted solution for document security.
