Examine the internal structure of the PDF and its fonts for technical reasons for a preflight mismatch. Preflight includes three options for in-depth inspection of a PDF. Technically skilled users can use these tools to analyze the objects and fonts that caused a mismatch.
To verify that your Adobe Acrobat PDF contains only the features, fonts, and formatting that you’ve specified, follow these steps to use the Preflight tool to inspect and, in certain cases, correct the document’s contents.
The Preflight tool includes a collection of additional checks (called rules in previous versions of Adobe Acrobat) that you can add to a profile. These checks are available from the Custom Checks section of each profile.
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