public ActionResult CompressExistingPDF(bool compressImage = false, bool optPageContents = false, bool removeMetaData = false, bool optFont = false, string imageQuality = "50", string Browser = "null")
{
if (Request.Form.Files != null && Request.Form.Files.Count != 0)
{
PdfLoadedDocument ldoc = new PdfLoadedDocument(Request.Form.Files[0].OpenReadStream());
PdfCompressionOptions options = new PdfCompressionOptions();
if (compressImage)
{
//Compress image.
options.CompressImages = true;
options.ImageQuality = int.Parse((imageQuality));
}
else
{
options.CompressImages = false;
}
//Compress the font data
if (optFont)
{
options.OptimizeFont = true;
}
else
{
options.OptimizeFont = false;
}
//Compress the page contents
if (optPageContents)
{
options.OptimizePageContents = true;
}
else
{
options.OptimizePageContents = false;
}
//Remove the metadata information.
if (removeMetaData)
{
options.RemoveMetadata = true;
}
else
{
options.RemoveMetadata = false;
}
//Set the options to loaded PDF document
ldoc.Compress(options);
//If the position is not set to '0' then the PDF will be empty.
MemoryStream ms = new MemoryStream();
ldoc.Save(ms);
ms.Position = 0;
ldoc.Close(true);
//Download the PDF document in the browser.
FileStreamResult fileStreamResult = new FileStreamResult(ms, "application/pdf");
fileStreamResult.FileDownloadName = "Compression.pdf";
return(fileStreamResult);
}
else
{
ViewBag.lab = "Choose a valid PDF file.";
ViewData.Add("imageQuality", new SelectList(new string[] { "10", "20", "30", "40", "50", "60", "70", "80", "90", "100" }, "50"));
return(View());
}
}
public IActionResult CompressPDF()
{
string path = Path.Combine(_hostingEnvironment.ContentRootPath, "Data", "PDF_succinctly.pdf");
FileStream inputDocument = new FileStream(path, FileMode.Open);
//Load an existing PDF document
PdfLoadedDocument loadedDocument = new PdfLoadedDocument(inputDocument);
//Create a new compression option.
PdfCompressionOptions options = new PdfCompressionOptions();
//Enable the compress image.
options.CompressImages = true;
//Set the image quality.
options.ImageQuality = 30;
//Optimize the font in the PDF document
options.OptimizeFont = true;
//Optimize page contents
options.OptimizePageContents = true;
//Remove metadata from the PDF document
options.RemoveMetadata = true;
//Flatted form fields in the PDF document
if (loadedDocument.Form != null)
{
loadedDocument.Form.Flatten = true;
}
//Flatten all the annotation in PDF document
foreach (PdfPageBase page in loadedDocument.Pages)
{
if (page.Annotations != null)
{
page.Annotations.Flatten = true;
}
}
//Assign the compression option and compress the PDF document
loadedDocument.Compress(options);
//Save the PDF document.
MemoryStream outputDocument = new MemoryStream();
//Save the PDF document
loadedDocument.Save(outputDocument);
outputDocument.Position = 0;
//Close the document
loadedDocument.Close(true);
//Download the PDF document in the browser.
FileStreamResult fileStreamResult = new FileStreamResult(outputDocument, "application/pdf");
fileStreamResult.FileDownloadName = "Compressed_PDF_document.pdf";
return(fileStreamResult);
}
