PDF merge

[isaware]

Hi,

We are merging existing PDF files.
Some files take one minute to merge - outcome is 30MB PDF.
Some other files take 3-5 minutes to merge - outcome 12-15MB PDF.

Do you know why the tool is merging slow for some PDFs?

[John - Tracker Supp]

There are many factors that could affect this - not least of all the file content, type and what size the files are to begin with and if you are attempting to optimize during merging...

We would need samples to pass an informed opinion.

[isaware]

Can you send me a sample code that merges 250 PDFs in one folder?

[John - Tracker Supp]

Hi,

are you using our end user application or Developer SDK ?

[isaware]

We are using the SDK.

[John - Tracker Supp]

Please post in the correct forum - so the correct product specailist can reply and we avoid delays in responding to you request, I will move this post on your behalf..

Also - with respect - we do not provide a 'turn key' solution and developers are expected to read the documentation, see the examples and if you are still having issues - we are happy to look at your code and try and help ...

[isaware]

Read first file with following code -

iRes = XCPro40_Defs.PXCp_Init(m_iPDF, XCPro40_Defs.g_RegKey, XCPro40_Defs.g_DevCode)
iRes = XCPro40_Defs.PXCp_ReadDocumentW(m_iPDF, sFirstMergeFile, 0)

and merge other documents with following -

iRes = XCPro40_Defs.PXCp_Init(iPDFToMerge, XCPro40_Defs.g_RegKey, XCPro40_Defs.g_DevCode)
iRes = XCPro40_Defs.PXCp_ReadDocumentW(iPDFToMerge, sFileName, 0)

Dim iPagesRange() As XCPro40_Defs.PXCp_CopyPageRange
ReDim iPagesRange(1)
Dim iPagesCount As Integer
iRes = XCPro40_Defs.PXCp_GetPagesCount(iPDFToMerge, iPagesCount)

iPagesRange(0).StartPage = 0
iPagesRange(0).EndPage = iPagesCount - 1
iPagesRange(0).InsertBefore = -1
XCPro40_Defs.PXCp_InsertPagesTo(iPDFToMerge, m_iPDF, iPagesRange, 1, 0)

iRes = XCPro40_Defs.PXCp_WriteDocumentW(m_iPDF, m_sRootFileName, XCPro40_Defs.PXCp_CreationDisposition.PXCp_CreationDisposition_Overwrite, XCPro40_Defs.PXCp_WriteDocFlag.PXCp_Write_NoRelease)

at the end of the process, we release the document with following -

iRes = XCPro40_Defs.PXCp_OptimizeFonts(m_iPDF, 0)
iRes = XCPro40_Defs.PXCp_OptimizeRemoveNamedDests(m_iPDF)
iRes = XCPro40_Defs.PXCp_OptimizeStreamCompression(m_iPDF)
iRes = XCPro40_Defs.PXCp_WriteDocumentW(m_iPDF, m_sRootFileName, XCPro40_Defs.PXCp_CreationDisposition.PXCp_CreationDisposition_Overwrite, 0)

[John - Tracker Supp]

Hi,

We suspect the most time consuming operations occur when performing;
PXCp_OptimizeFonts and PXCp_OptimizeStreamCompression functions, and the processing time for these is very dependant on the documents being merged.

Also, the call to PXCp_WriteDocumentW before performing optimization is redundant and is not necessary.

So to move forward - sample doc's will be required - however, as a 'quick and dirty' test your end you could comment these out and test to see if this improves things ...

Finally - if you feel in anyway your code may be at fault in terms of processing time - you can always also try and use the evaluation version of our end user product PDF-Tools which performs a similar task...

Hope that helps