Removing found watermarks Leave feedback
GroupDocs.Watermark API enables you to easily find and remove a particular watermark from a document. Following code serves this purpose.
AdvancedUsage.SearchAndRemoveWatermarks.RemoveWatermark
// Specify an absolute or relative path to your document. Ex: @"C:\Docs\document.pdf"
using (Watermarker watermarker = new Watermarker("document.pdf"))
{
PossibleWatermarkCollection possibleWatermarks = watermarker.Search();
// Remove possible watermark at the specified index from the document.
possibleWatermarks.RemoveAt(0);
// Remove specified possible watermark from the document.
possibleWatermarks.Remove(possibleWatermarks[0]);
watermarker.Save("document.pdf");
}
GroupDocs.Watermark also enables you to search and remove the watermarks on the basis of some particular text formatting. You can provide a search criterion containing font name, size, color etc and the API will find the watermarks with matching properties. Following code snippet shows how to search and remove watermarks with a particular text formatting.
AdvancedUsage.SearchAndRemoveWatermarks.RemoveWatermarkWithParticularTextFormatting
// Specify an absolute or relative path to your document. Ex: @"C:\Docs\document.pdf"
using (Watermarker watermarker = new Watermarker("document.pdf"))
{
TextFormattingSearchCriteria criteria = new TextFormattingSearchCriteria();
criteria.ForegroundColorRange = new ColorRange();
criteria.ForegroundColorRange.MinHue = -5;
criteria.ForegroundColorRange.MaxHue = 10;
criteria.ForegroundColorRange.MinBrightness = 0.01f;
criteria.ForegroundColorRange.MaxBrightness = 0.99f;
criteria.BackgroundColorRange = new ColorRange();
criteria.BackgroundColorRange.IsEmpty = true;
criteria.FontName = "Arial";
criteria.MinFontSize = 19;
criteria.MaxFontSize = 42;
criteria.FontBold = true;
PossibleWatermarkCollection watermarks = watermarker.Search(criteria);
watermarks.Clear();
watermarker.Save("document.pdf");
}
GroupDocs.Watermark API allows you to search and remove hyperlinks in a document of any supported format. Following code sample shows how to find and remove hyperlinks with a particular URL from a document.
AdvancedUsage.SearchAndRemoveWatermarks.RemoveHyperlinksWithParticularUrl
// Specify an absolute or relative path to your document. Ex: @"C:\Docs\document.pdf"
using (Watermarker watermarker = new Watermarker("document.pdf"))
{
PossibleWatermarkCollection watermarks = watermarker.Search(new TextSearchCriteria(new Regex(@"someurl\.com")));
for (int i = watermarks.Count - 1; i >= 0; i--)
{
// Ensure that only hyperlinks will be removed.
if (watermarks[i] is HyperlinkPossibleWatermark)
{
// Output the full url of the hyperlink
Console.WriteLine(watermarks[i].Text);
// Remove hyperlink from the document
watermarks.RemoveAt(i);
}
}
watermarker.Save("document.pdf");
}
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