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    “the PDF document contained image masks that were not downsampled." Community Beginner ,

    /t5/acrobat-discussions/the-pdf-document-contained-image-masks-that-were-not-downsampled-quot/td-p/7912479 Dec 04, 2015 Dec 04, 2015

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    I need to save an InDesign document as a small PDF. The indd document is 21.5MB, and when saving the document as a PDF using the "Smallest File Size" setting, the PDF comes out to be 20.3MB. I would like to get the PDF closer to the range of 10MB-15MB.

    The document in InDesign CC2015. It is 20 pages, has vector ai files, and all photos that were originally .psds have been downsampled to 72 ppi and saved as jpegs. I subsequently tried to downsize it by saving it in Adobe Acrobate Reader DC as an Optimized PDF and a Reduced Size PDF. When I do that, I always receive the following error: "the PDF document contained image masks that were not downsampled."

    Can someone explain to me how I can remove the image masks, and what else I can do to reduce the file size of the PDF?