How to turn all layers to grayscale

[wojtryb]

You’ll need to use soft-proofing under ctrl + y.
By default it switches to CMYK, so you need to configure it once in the settings like this:

How to check values in Krita

Hi, For value checking I use soft proofing, configured like this: [Soft proofing_2] And turn it on and off with Ctrl+Y wich I believe is the default shortcut. However the result is slightly different from using the grey layer trick or desaturate filter, so I’m wondering if that’s a good method.