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b/w dither 90 PDF into InDesign, unwanted mystery gray dots appeared! Help

Forum|Forum|10 months ago
March 20, 2025
3 replies
5208 views

When I placed a b/w dither PDF into InDesign, I now have black, white and gray dots! Why does that happen? I don't want the gray dots. Help!!

General troubleshooting

Correct answer Dave Creamer of IDEAS

Try saving as TIFF with LZW compression.

Robert at ID-Tasker

Legend

When I placed a b/w dither PDF into InDesign, I now have black, white and gray dots! Why does that happen? I don't want the gray dots. Help!!

By @Soo00

But that's just the PREVIEW, right?

S

Soo00Author

Participating Frequently

Very interesting!

I exported the InDesign file as a PDF.

Gray dots are gone! Ummmm...I guess it is not WYSIWYG.

Thx 🙂

Dave Creamer of IDEAS

Community Expert

A bitmap mode image cannot have any gray pixels by definition. The only question was what was in the original PDF that was placed.

David Creamer: Community Expert (ACI and ACE 1995-2023)

Dave Creamer of IDEAS

Correct answer

Community Expert

Try saving as TIFF with LZW compression.

David Creamer: Community Expert (ACI and ACE 1995-2023)

Robert at ID-Tasker

Legend

@Dave Creamer of IDEAS

I think PDF file is somehow involved - not JPEG?

Dave Creamer of IDEAS

Community Expert

I edited my reply to remove reference to JPEG.

However, we don't know the color mode of the PDF.

David Creamer: Community Expert (ACI and ACE 1995-2023)

Robert at ID-Tasker

Legend

Can you share your original image - PDF file?

S

Soo00Author

Participating Frequently

Here is the PDF I placed

TT_birdseye_b-w_from_Dale_Dither_90_invert.pdf

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