How to Make a PDF Darker in Acrobat

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Adobe's Acrobat software allows you to read and make limited edits to documents stored in Adobe's popular Portable Document Format. PDF files are designed to appear identical no matter what system they're read on, but some users may have trouble reading documents in their original colors. Use Acrobat's Accessibility settings to make the text and background of the documents you read whatever color you want, including darker or more contrasting colors than the original.


Step 1

Open Acrobat's "Edit" menu, then click "Preferences."

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Step 2

Click "Accessibility" in the left pane to open the Accessibility Panel, which contains several options for making PDF documents easier to read for visually-impaired users.


Step 3

Check the "Replace Document Colors" box to enable the color-replacement settings. To make the document darker and easier to read, either click "Use High-Contrast colors" and select a color combination from the drop-down menu, or click "Custom Color" and select a specific color for both the text and background.


Step 4

Click "OK" to close the Accessibility Panel and view documents with your new colors.




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