adobe acrobat color convestion problem

Hi there,

I hope you are doing well. Thanks for reaching out. I'm sorry to hear about the issue you are experiencing.

When using Color Conversion in Acrobat, if your images are losing detail and appearing noisy (similar to over-compressed JPEGs), it could be related to the downsampling or compression settings applied during the conversion process.

Here are a few things you can check and try:

1. Check Your Conversion Settings:

• Go to Tools > Print Production > Convert Colors.
• In the Convert Colors dialog box, look for options like:
• Preserve Black
• Preserve CMYK values

More importantly, ensure you’re not applying image downsampling or compression. If your settings are too aggressive, Acrobat can compress images during this process. For more information, please check the help page: https://adobe.ly/3TsHJNa 

2. Recommended Steps:

• Before conversion, go to File > Save As Other > Optimized PDF.
• In the PDF Optimizer, under Images, make sure:
• Downsampling is set to Off, or to a higher DPI (e.g., 300 ppi).
• Compression is set to Lossless (ZIP) instead of JPEG or JPEG2000.

 Additionally, If the document has images with embedded color profiles, converting to a different color space (like CMYK or sRGB) can also cause shifts or loss in detail. Try keeping the same color profile or embedding the correct one during conversion. and make sure to always work with a copy of the original file before running any conversions.

Hope this information will help.