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I have a large PDF of a document badly yellowed with age. Apple support says to bring it up under Preview, chose File/Export then pick a Quartz filter. Unfortunately Preview becomes non-responsive when I pick Black & White. Using macOS Sonoma 14.6.1. Any ideas on any other way to white the yellowed pages?
Can you explain what you mean by a large PDF? Do you mean in size or number of pages? I'm not certain what you were told but, to my knowledge, quartz filters apply to images, not documents.
preview becomes non-responsive when using quartz filter
