Find PDF File Size based on Page Number

Aspose.PDF Product Family
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1

Hey,
I have a 50MB file of 2500 pages which I want to split into multiple files. Size of each part must not be greater than 8MB. How can I achieve this?

2

@aanshu

Aspose.PDF does not provide any direct functionality to check the file size. However, you can achieve it using C# classes as a workaround. Please check below code snippet and we hope it will help:

Document destinationPdfDocument = new Document();
Document sourcePdfDocument = new Document();

var filesFromDirectory = Directory.GetFiles(dataDir, "*.pdf");

for (int i = 0; i < filesFromDirectory.Count(); i++)
{
    if (i == 0)
    {
        destinationPdfDocument = new Document(filesFromDirectory[i]);
    }
    else
    {
        // Open second document
        sourcePdfDocument = new Document(filesFromDirectory[i]);
        // Add pages of second document to the first
        destinationPdfDocument.Pages.Add(sourcePdfDocument.Pages);
        //** I need to check size of destinationPdfDocument over here to limit the size of resultant PDF**
        MemoryStream ms = new MemoryStream();
        destinationPdfDocument.Save(ms);
        long filesize = ms.Length;
        ms.Flush();
        // Compare the filesize with MBs
        if (i == filesFromDirectory.Count() - 1)
        {
            destinationPdfDocument.Save(dataDir + "PDFOutput_" + i + ".pdf");
        }
        else if ((filesize / (1024 * 1024)) < 1) // Check if PDF is less than 1MB
            continue;
        else
        {
            destinationPdfDocument.Save(dataDir + "PDFOutput_" + i.ToString() + ".pdf");
            destinationPdfDocument = new Document();
        }
    }
}
// Encrypt PDF
destinationPdfDocument.Encrypt("userP", "ownerP", 0, CryptoAlgorithm.AESx128);
// Save concatenated output file
destinationPdfDocument.Save(dataDir + "CombinedPDF.pdf");
3

@asad.ali
I was working with Aspose Java and did try to use the same logic in Java but it deosn’t seem to work for me.

4

@aanshu

Would you please consider sharing the code that you wrote in Java with same logic?