If it's set to more than 150-200 ppi and this is a business document, you're using a lot of space for not a lot of gain, and it's going to generate enormous print jobs when printed.Īs far as resolution/quality is concerned, there you may be fighting physics. Also, check the resolution setting when generating the PDF. Make sure your users are generating PDF documents with lower resolution images in the first place so they won't be so big. Typically image files already have decent compression, particularly if they're photos using JPG format, so you're not going to get much more compression in an optimized PDF. The images on the original file might be "small" in terms of visual size on the page, but if they were cut/paste into the document they could be huge in resolution and number of pixels. Of course, if it needs to be printed, with good color accuracy, at a professional printer, then there's not much you can do. You can also try subsetting fonts, but that can sometimes lead to font corruption in the PDF. Vector art is much smaller in a pdf than a bitmap image. If any of the images can be changed to vector art, do so. Btw, if the images are jpgs, then you won't get much compression on them except by doing one or more of the above things. The "extra" parts of the image are often still a part of the resulting pdf. If the images are larger than what's being used in the final product, crop them so that only the used portion is actually in the production file. If the images don't need to be in color, change them to grayscale. If they are CMYK, change to RGB, assuming that color accuracy isn't necessary. If they are high res, you can save them down to low res. If you can get your hands on the original files, then take a look at the images. This will absolutely make it unsuitable for printing at a professional printer. That should bring it down some, assuming, again, that the images aren't already low-res. It'll bring down the resolution of the images to 72 or 96 dpi, depending on your defaults. You can reduce the resolution of the images by doing a file > save as in Adobe Acrobat and optimizing for web usage. Assuming this isn't being printed, then yes, it'll be color images and resolution that are the likely culprit.
0 kommentar(er)
