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On this image:

enter image description here

When I choose the "Select by Color Tool," it highlights all the black regions,

enter image description here

I only want it to choose the "slightly" black regions (which is the background), in another painting program (its name is paint.NET) there's this "tolerance" bar:

enter image description here

Does GIMP also have it? I want it so I can decrease the tolerance to a certain extent so that it only highlights the "slightly black" regions.

|improve this question
  • Yes there's a threshold slider in the tool options, but what is the ultimate goal of your edit? You may find there is a better solution if you explain your actual problem and show the original starting image. Can you edit your question to clarify. Thanks. – Billy Kerr Jul 24 at 9:23
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In the Tool Options dockable dialog the options for the currently selected tool are shown. After picking the Fuzzy Select Tool there is a slider labeled Threshold which has a similar function.

If you cannot see this dockable dialog it can be enabled through Windows → Dockable Dialogs → Tool Options.

Threshold slider

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  • I tried it and it also picked all the black regions, have any other way? – thatone dodobird Jul 23 at 15:07
  • If you want to select the partially transparent pixels, note that they have the same color - black - but a different alpha value. – Michael Schumacher Jul 23 at 17:07
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    Looks like a XY problem. What is the real problem? Each time I see this kind of question popping up it is someone trying to handle anti-aliasing pixels. Maybe should you have a look at [this]( gimp-forum.net/…). – xenoid Jul 23 at 18:18

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