12/28/2022 0 Comments Get info mac dimensions units![]() ![]() Images in PDF are represented as unit-free samples and do not themselves have resolution until they are have been instantiated on a page. ![]() "But what about images? Images in PDFs surely give it resolution!" Sort of. PDF only truly has resolution when it is rendered to a particular device (and that may or may not be at the device's resolution). Pages are described in a mathematical means that isn't tied to any particular resolution limit except for those imposed by floating point numbers. You should be aware that PDF on its own is a resolution-free format. $im->setCompression(Imagick::COMPRESSION_JPEG) Īlso, here is the output of imagick from the identifyImage() function, which seems a bit wrong looking at the file size. Obviously the export is correct as the image is viewed correctly in those dimensions - Could it be that the PDF was simply wrongly encoded where the width and height were mixed up? How can I detect this via code? Also the image export is of a different (much larger) size, roughly twice the size, this leads me to believe some information isn't being read properly by imagick.īasically I'd like to know if there is a proper way to determine the actual PDF content size, so that the images exported from it are at the best quality possible.ĮDIT: (code added) readImage("SomeTest.pdf") The PDF reports to be a 612x792 72ppi document, yet when I export an image from it via preview on the mac, the image is 1651x1275 - How is this possible? This is due to the difference in information contained on the PDF vs the actual content dimensions. ![]() I'm currently using php's imagick to convert some PDF to images - This works well for the small detail that the images are 'chopped' during output. ![]()
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