We are using Aspose.PDF v22.1. for .NET
We found that after conversion from pdf to PDF/A format output file size increased in more than 10 times.
We are not using any Aspose optimization functionality, because we don’t want to lose any info, which customer could put behind the document (for example metadata or something else). For us so high increasing file size is unacceptable.
For conversion we have following code:
private MemoryStream ConvertToPdfa(Stream stream)
{
var pdf = new Document(stream);
using (var outputStream = new MemoryStream())
{
var pdfsecurity = new PdfFileSecurity();
pdfsecurity.BindPdf(pdf);
pdfsecurity.DecryptFile("");
var isFileConverted = pdf.Convert(outputStream, PdfFormat.PDF_A_3B, ConvertErrorAction.Delete);
}
var destinationStream = new MemoryStream();
pdf.Save(destinationStream, SaveFormat.Pdf);
return destinationStream;
}
Could you please suggest us how we can solve this issue
I just executed the following code and it does not increase in size:
private void Logic()
{
var doc = new Document($"{PartialPath}_input.pdf");
doc.Save($"{PartialPath}_output.pdf"); // Making copy
var docNew = new Document($"{PartialPath}_output.pdf");
var outputStream = new MemoryStream();
var isFileConverted = docNew.Convert(outputStream, PdfFormat.PDF_A_3B, ConvertErrorAction.Delete);
if (isFileConverted)
{
docNew.Save(outputStream, SaveFormat.Pdf);
}
}
I could see FormatIncreaseFileSize_output.pdf is not pdfa format, but we in our code converting to pdfa format, probably that’s why in your case it’s not increased
Probably, that’s because you save conversion result to output aspose log stream, if you
change your code from:
docNew.Save(outputStream, SaveFormat.Pdf);
to:
docNew.Save($"{PartialPath}_output.pdf", SaveFormat.Pdf);
you will see difference
@gomezw
We have opened the following new ticket(s) in our internal issue tracking system and will deliver their fixes according to the terms mentioned in Free Support Policies.
Issue ID(s): PDFNET-54334
You can obtain Paid Support Services if you need support on a priority basis, along with the direct access to our Paid Support management team.
Actually we are working with stream, it is also reproducible with stream.
private void Logic()
{
var inputFilePath = $"{PartialPath}_input.pdf";
var outputFilePath = $"{PartialPath}_output.pdf";
var inputStream = new MemoryStream(File.ReadAllBytes(inputFilePath));
var doc = new Document(inputStream);
var asposeLogOutputStream = new MemoryStream();
var isFileConverted = doc.Convert(asposeLogOutputStream, PdfFormat.PDF_A_3B, ConvertErrorAction.Delete);
if (isFileConverted)
{
var outputStream = new MemoryStream();
doc.Save(outputStream, SaveFormat.Pdf);
File.WriteAllBytes(outputFilePath, outputStream.ToArray());
}
}
Sadly, I am not part of the dev team or have any input on their priorities. The post I made before has a link to the policies regarding how bugs are treated and the order they are solved. Please review it so you have more information about that,
Wo do have the same problem with the java version.
Converting an existing PDF file to PdfFormat.PDF_A_3B or PdfFormat.ZUGFeRD results in a generated file with filesize that is increased more than 10 times than its source file.
A solution would be great.
i nearly forgot to send the sample files. Here they are:
ZUGFeRD-invoice EXTENDED 2p0.xml
= data file for zugferd pdf (30KB)
Rechnungsmuster.pdf
= Example pdf used for zugferd generation (200KB)
Zugferd Aspose Rechnungsmuster EXTENDED 2p0.pdf
= Result of zugferd generation per Aspose (3MB)
Zugferd OtherTool Rechnungsmuster EXTENDED 2p0.pdf
= Result of zugferd generation per other software tool (300KB)
(may be this result file of other tool helps for fixing the problem)
We have opened the following new ticket(s) in our internal issue tracking system and will deliver their fixes according to the terms mentioned in Free Support Policies.
Issue ID(s): PDFJAVA-43543
You can obtain Paid Support Services if you need support on a priority basis, along with the direct access to our Paid Support management team.
