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Exhibit 23

CONSENT OF INDEPENDENT REGISTERED PUBLIC ACCOUNTING FIRM

We consent to the incorporation by reference in the Registration Statements (Form S-8 No. 333-168924, 333-183161, 333-192127, 333-212843, 333-232917, 333-241029 and 333-273603) of our reports dated February 20, 2025, with respect to the consolidated financial statements of Quad/Graphics, Inc., and the effectiveness of internal control over financial reporting of Quad/Graphics, Inc., included in this Annual Report (Form 10-K) for the year ended December 31, 2024.

/s/ Ernst & Young LLP

Milwaukee, Wisconsin

February 20, 2025