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Step 1

Export the file from InDesign with the following settings:

<aside> 💡 PDF/X-4:2010 Standard Acrobat 7 (PDF 1.6) Compatibility

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Step 2

Click on compression and do the following settings:

<aside> 💡 Set PPI to 280/299 for Color and Grayscale Images Make sure "Compress Text and Line Art" and "Crop Image Data to Frames" are checked

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Step 3

Open the PDF and then do Save As>Optimized PDF

If you audit space usage, you should see document overhead/x object forms/piece information might be adding additional space.

<aside> 💡 Ensure transparency is selected and on the "High" setting.

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Step 4

Save! You should have reduced your file size.