Debenu Quick PDF Library - PDF SDK Community Forum : PDfium memory consumption http://www.quickpdf.org/forum/ Copyright (c) 2006-2013 Web Wiz Forums - All Rights Reserved. Tue, 12 May 2026 05:30:37 +0000 Fri, 17 Apr 2020 10:10:00 +0000 http://blogs.law.harvard.edu/tech/rss Web Wiz Forums 11.01 360 www.quickpdf.org/forum/RSS_post_feed.asp?TID=3802 <![CDATA[Debenu Quick PDF Library - PDF SDK Community Forum]]> http://www.quickpdf.org/forum/forum_images/QPDF_Forum_Title.png http://www.quickpdf.org/forum/ <![CDATA[PDfium memory consumption : &#034;...The problem is in RenderPageToString...]]> http://www.quickpdf.org/forum/pdfium-memory-consumption_topic3802_post15206.html#15206 Author: Ingo
Subject: 3802
Posted: 17 Apr 20 at 10:10AM

"...
The problem is in RenderPageToString which calls DPLRenderPageToString where the memory leak occurs.
..."

and the render-function calls PDFium inside.
Again: Try Google regarding memory consumption by PDFium.
You can check it very easily if it's PDFium or the QP-function:
Change your code and kick off PDFium - what's the result now... better?

If you won't succeed with your trys you should ask the publishers of the library via the official support page.

]]> Fri, 17 Apr 2020 10:10:00 +0000 http://www.quickpdf.org/forum/pdfium-memory-consumption_topic3802_post15206.html#15206 <![CDATA[PDfium memory consumption : I&#039;m using c#and usng debenu...]]> http://www.quickpdf.org/forum/pdfium-memory-consumption_topic3802_post15205.html#15205 Author: pdfuserxx
Subject: 3802
Posted: 17 Apr 20 at 9:59AM

I'm using c#and usng debenu to convert pdf document to png , most of the files consist from single page.
DA functions are not used as the application is working with in memory streams.

The code is fairly simple:

dynamic newPdfLibrary = new DebenuPDFLibraryDLL1711.PDFLibrary(librarypath);  
newPdfLibrary.SetPDFiumFileName(pdfiumdllpath);
newPdfLibrary.SelectRenderer(4)

//load the document from memory stream
pdfLibrary.LoadFromString(ms.ToArray(), string.Empty) 
//select the document 
int documentID = pdfLibrary.SelectedDocument();
//render 
pdfLibrary.RenderPageToString(300, 1, 0);

//cleanup
pdfLibrary.RemoveDocument(documentID);
pdfLibrary.DestroyRenderer();
pdfLibrary.ReleaseLibrary();
pdfLibrary = null;

The problem is in RenderPageToString which calls DPLRenderPageToString where the memory leak occurs.

regards
]]> Fri, 17 Apr 2020 09:59:24 +0000 http://www.quickpdf.org/forum/pdfium-memory-consumption_topic3802_post15205.html#15205 <![CDATA[PDfium memory consumption : In the developer guide you should...]]> http://www.quickpdf.org/forum/pdfium-memory-consumption_topic3802_post15199.html#15199 Author: Ingo
Subject: 3802
Posted: 16 Apr 20 at 10:45AM

In the developer guide you should read the chapter:
Memory and direct access functions

]]> Thu, 16 Apr 2020 10:45:39 +0000 http://www.quickpdf.org/forum/pdfium-memory-consumption_topic3802_post15199.html#15199 <![CDATA[PDfium memory consumption : This small pdf won&#039;t be responsible...]]> http://www.quickpdf.org/forum/pdfium-memory-consumption_topic3802_post15198.html#15198 Author: Ingo
Subject: 3802
Posted: 16 Apr 20 at 10:38AM

This small pdf won't be responsible for great memory consumption.
I don't know your dev.language and you don't post the real code but if you've free the library itself the problem can only be the PDFium-handling itself.

About DA-functionality:
You're registered here for more than four years now and don't know the online resources?!

Here for a common start:
http://www.quickpdf.org/

Here to read about the direct access functionality (DA):
https://www.debenu.com/docs/pdf_library_reference/FunctionGroups.php

Here to search about anything regarding QuickPDF:
https://www.debenu.com/docs/pdf_library_reference/Search.php

Here you can choose your developer-guide:
https://www.debenu.com/products/development/debenu-pdf-library/help/developer-guide/


]]> Thu, 16 Apr 2020 10:38:24 +0000 http://www.quickpdf.org/forum/pdfium-memory-consumption_topic3802_post15198.html#15198 <![CDATA[PDfium memory consumption : The page size is 3x2 inch and...]]> http://www.quickpdf.org/forum/pdfium-memory-consumption_topic3802_post15197.html#15197 Author: pdfuserxx
Subject: 3802
Posted: 16 Apr 20 at 9:13AM

The page size is 3x2 inch and the file itself is approx 50 kb, but similar results can be observed with other pdf files. 
Sorry for the question, but what is DA functionality?

May be but, I can only access PDFium functionality thru PDF functions. I'm using PDfium, because there ware same issues with default renderer. 

regards
]]> Thu, 16 Apr 2020 09:13:04 +0000 http://www.quickpdf.org/forum/pdfium-memory-consumption_topic3802_post15197.html#15197 <![CDATA[PDfium memory consumption : If it&#039;s a QuickPDF-issue:QuickPDF...]]> http://www.quickpdf.org/forum/pdfium-memory-consumption_topic3802_post15196.html#15196 Author: Ingo
Subject: 3802
Posted: 16 Apr 20 at 8:03AM

If it's a QuickPDF-issue:

QuickPDF 16 and newer reduced memory consumption down to half.
How big (pages) are your pdf-files?
What's always better for bigger files is using the DA-functionality (but never mix DA- and Non-DA-functions).

Here's a kb-document about how to use an external renderer:
https://www.debenu.com/kb/use-rendering-printing-add-debenu-quick-pdf-library/

I think more that it's a PDFium-issue itself:

Try Google with "PDFium release memory"...
There's a lot.

]]> Thu, 16 Apr 2020 08:03:12 +0000 http://www.quickpdf.org/forum/pdfium-memory-consumption_topic3802_post15196.html#15196 <![CDATA[PDfium memory consumption : I&#039;m already calling &#034;ReleaseLibrary&#034;...]]> http://www.quickpdf.org/forum/pdfium-memory-consumption_topic3802_post15194.html#15194 Author: pdfuserxx
Subject: 3802
Posted: 16 Apr 20 at 6:54AM

I'm already calling "ReleaseLibrary" which calls DPLReleaseLibrary and FreeLibrary but the memory is not being released.

regards 
]]> Thu, 16 Apr 2020 06:54:30 +0000 http://www.quickpdf.org/forum/pdfium-memory-consumption_topic3802_post15194.html#15194 <![CDATA[PDfium memory consumption : Hi,regarding the instance the...]]> http://www.quickpdf.org/forum/pdfium-memory-consumption_topic3802_post15188.html#15188 Author: Ingo
Subject: 3802
Posted: 10 Apr 20 at 2:33PM

Hi,

regarding the instance the library itself offers "free"...
]]> Fri, 10 Apr 2020 14:33:08 +0000 http://www.quickpdf.org/forum/pdfium-memory-consumption_topic3802_post15188.html#15188 <![CDATA[PDfium memory consumption : I&#039;m using PDFium renderer...]]> http://www.quickpdf.org/forum/pdfium-memory-consumption_topic3802_post15187.html#15187 Author: pdfuserxx
Subject: 3802
Posted: 10 Apr 20 at 9:53AM

I'm using PDFium renderer in my project

  var result = newPdfLibrary.SetPDFiumFileName(libraryFileName);
            if (result == 1)
            {
                int renderId = newPdfLibrary.SelectRenderer(4);
            }

and then RenderPageToString to render pdf document, but this results in huge memory consumption which is never released.

Do I need to call anything else to free the memmory?
DestroyRenderer and ReleaseLibrary have no effect.

regards

]]> Fri, 10 Apr 2020 09:53:12 +0000 http://www.quickpdf.org/forum/pdfium-memory-consumption_topic3802_post15187.html#15187