Here 2 points that might help to improve the performance of bigger books with lot of text, created out of PDF files using pdf2megazine:
- Set qualitycontrol="false"
For big books with a lot of text on every page the default settings of book@qualitycontrol (i.e. the parameter "qualtiycontrol" that optionally can be added to the <book> element) might not improve performance but even slow down the speed of page flips.
Reason:The calculation of thelower resolution takes so much time that the benefit, i.e. gaining speed when rendering during the page flip, does not pay back.
Suggestion: set value to false like
<book plugins="batchpages, console, print, ... whatever plugins" qualitycontrol="false" further parameters>
- Reduce JPG Quality
If the PDF pages not only contain text but also jpg images, there is a way to reduce the size of the pages.The pdf2megazine.bat script makes use of the converter pdf2swf. And there are other optional switches that can be used when calling pdf2swf.
The one of interest here is the "-J" switch, which controls the quality of the JPG images.
To use the "J" switch, open pdf2megazine.bat with a text editor such as Notepad++.
At line 64 you will find:
"%PDF2SWF%" 20 -q -t -T 9 -G -p %%i -f "%from%" "%to%%%i.swf"
add -j 20 after "%PDF2SWF%" so that line 64 now looks like this:
"%PDF2SWF%" -j 20 -q -t -T 9 -G -p %%i -f "%from%" "%to%%%i.swf"
... save and close your file. After running a new conversion, you will see that all pages are now smaller in size
"-J 0" for lowest quality (very ppor!)
"-J 100" for highest quality (the default!)
To find the best compromise between performance and quality, you might have to do the "try and error" approach, since the setting depends on your images and your personal likings