How do I convert a PDF to grayscale without Acrobat compressing the images?

[johnl18642483]

Here's the before and after. This is using the fixup "Convert color to grayscale". Thanks

[creative explorer]

@johnl18642483 The most reliable method to convert a PDF to grayscale without recompressing or downsampling the images is to use the Preflight tool in Adobe Acrobat and select the specific grayscale conversion "Fixup." https://www.prepressure.com/pdf/basics/editing/convert-color-to-grayscale

[johnl18642483]

That is what I used.