I have been using this addon for a couple days now and I have a few suggestions:

• Locked the location for the position information. When zooming in it is hard to get a good precision pixel placement if that information is off screen. (suggestion: lock or make the left side of the layout scroll separately)
• Marking the middle of an image on the edges. I have been trying to make circular things and I don't mind the lack of a shape painter, but figuring out the alignment of the sprites without this little detail is tough
• Add a clear option, allow the painter to clear that color too or allow transparent color switching. Per pixel deleting isn't very efficient.
• Add the ability to undo

I can't think of much else really. For rapid prototyping it works great. I just would like a few quality of life changes.

Looks like a great prototyping and fast development tool! Looks fairly robust too!

This is as must have addon! This can be super useful for jams, prototyping or to make small adjustments to sprites. LOVE IT!

I'm subscribed to emails on the godot-proposals repo, and you have no idea how how often people ask for Godot to have a sprite editor! Creating a pixel editor is an ambitious project, and you accomplished quite a lot in the time allotted. Of course, there's lots more that could be added, but you have a great start :-)

I really hope you keep working on this addon because there's a lot of potential with it.  Reminds me of GMS2's sprite editing feature, which I kinda miss.  Amazing work Solo =)

Missed this feature from GMS2. Its useful to have an in engine sprite editor for quick prototyping.

Not bad at all, man.

Found bugs :

- when you want to overwrite an existing sprite, you get the confirmation pop-up. But if you say "cancel" to the pop-up, it saves and overwrite anyway.

- I resized a new canvas to 64*64 and used the bucket tool and... Godot crashed. Couldn't reproduce  the bug.

It's ok, I have bugs too

Great ! That was missing for quick prototyping and small sprites adjustments.