Re: Problem: PDF Kit generates hugh PDF files.
Re: Problem: PDF Kit generates hugh PDF files.
- Subject: Re: Problem: PDF Kit generates hugh PDF files.
- From: Nik Youdale <email@hidden>
- Date: Thu, 13 Dec 2007 10:52:15 +1100
Not an expert on this, but im guessing the jpegs are being
decompressed into a bitmap format here:
nextImage = [[NSImage alloc] initWithContentsOfFile:(NSString*)
[fileNameList objectAtIndex:i]];
And then you are simply adding that bitmap to the pdf. Sounds like you
need to find some way of re-compressing the image data when you add it
to the pdf.
Cheers
Nik
On 12/12/2007, at 11:46 AM, Jerry LeVan wrote:
Hi,
This post evidently did not make it to the list, at least
it has not appeared in the Digest that I receive...
I am having a problem with the PDF Kit, the generated pdfs are
up to seven ( or more ) times the size of the same pdfs generated
with the same data as Acrobat and other applications
I have a "book" made out of 14 jpeg images totaling about 8384KB.
Here are some results for the conversion to pdf
Jomix 8.2 MB
Acrobat 8.3 MB
MakePDF 54.4 MB
How can I reduce the size of the pdf generated by the following code ?
Thanks
Jerry
-(IBAction) MakePDF:(id)sender
{
PDFDocument* myBook;
PDFPage * nextPDFPage;
NSImage* nextImage;
int i;
NSBundle *thisBundle = [NSBundle bundleForClass:[self class]];
NSString * emptypdf = [thisBundle pathForResource:@"Empty.pdf"
ofType:nil] ;
myBook = [[PDFDocument alloc] initWithData:[NSData
dataWithContentsOfFile:emptypdf]];
if (myBook == NULL){
NSLog(@"Create PDF Failed");
return;
}
[myBook removePageAtIndex:0];
// loop to build pdf
int cnt = [ fileNameList count];
for (i=0; i< cnt ; i++) {
nextImage = [[NSImage alloc] initWithContentsOfFile:(NSString*)
[fileNameList objectAtIndex:i]];
nextPDFPage = [[PDFPage alloc] initWithImage:nextImage];
[myBook insertPage: nextPDFPage atIndex: i];
[nextImage release];
[nextPDFPage release];
}
[myBook writeToFile:@"/Users/jerry/Desktop/Book.pdf"];
[myBook release];
return;
}
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