PDF to image creation in ios

Question

Hi Everyone I am trying to create PNG(thumbnail) images from the pdf for my app for that i used couple of answers from the stackoverflow below code is i am using `-

Answer 1

A loop for thousand pages means you alloc memory for each page process and that chunk of memory is never reused until method ends. Obj-C memory management works that way, with an effective release of memory after each loop.

If you want to reuse memory for each iteration, use an independent NSAutoreleasePool

for(int i = 0; i < totalNum; i++ ) {
    NSAutoreleasePool * pool = [[NSAutoreleasePool alloc] init];
    ... .... (process page ... ) ...
    [pool release];
}

Or, in the case you are using ARC:

for(int i = 0; i < totalNum; i++) {
    @autoreleasePool {
        .... (... process page ... ) ....
    }
}

Answer 2

Check out this open source project; they're doing quite a good job of rending the PDF into a UIImage. https://github.com/mindbrix/UIImage-PDF