Brightness/contrast box not opening properly

When I click adjust>brightness/contrast the box is not appearing. Window/level and color balance won’t appear either but everything else seems to be working normally. Has anyone else had this happen? Any fixes besides re-downloading? (tried and nothing changed).

Hi @Bio_Nell,

Welcome to the forum.

We’ll be able to help you better if you answer these questions:

  1. What operating system are you using (and what version).
  2. What version of ImageJ? Help > About ImageJ...
  3. What version of Java? also Help > About ImageJ...


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Thank you, John

  1. Operating system: Windows 10, version 1809
  2. ImageJ version: 1.52n
  3. Java version: 1.8.0_172 (64-bit)

For the record, the same issue has been posted in the fiji/fiji issue tracker here:


After some troubleshooting I was able to fix this issue by right clicking the brightness/contrast window in the task bar. Selecting “move” and using arrow keys and then clicking the mouse. (just dragging with the mouse didn’t work). Thank you and I will post this in the other forum as well.

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I have the same issue. When I right click on the brightness/contrast nothing happens and no windows pups up, may I ask to explain it more and help me how can I fix this problem?
Thank you