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I have recently moved from Windows to Fedora, but I miss the screen ruler from powertoys. Is there any nice equivalent for linux?

https://learn.microsoft.com/en-us/windows/powertoys/screen-ruler

Screen ruler allows you to quickly measure pixels on your screen based on image edge detection.

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I use kruler in KDE.

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A quick search tells me there is something called Screenruler in linux, does that work for your usecase?

Haven't used it myself so I can't give any endorsement or critiques, but it seems to be similar to the linked windows tool