I have used GIMP for ages, and I've NEVER seen this before...

When I try to make a freehand line, it comes out all jaggy, since somehow horizontal/vertical/45 degree lines are preferred apparently:

enter image description here

What is this and how can I get it deactivated?

1 Answer 1


Your brush is snapping to the image grid. Reset with View > Snap to grid

On my system, with "snap to grid" enabled (left) and disabled (right):

enter image description here

  • Thanks for the help - that was it, works for me!
    – sdbbs
    May 22, 2022 at 8:44

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