Although it doesn't have as many features nor the same accuracy when using transparency, you could use this web drawables generator: https://rexmeck.github.io/Drawable-Generator/
hey um any "gun" i make with this has a broken inventory icon where the spire looks "split" (half the sprite "top" and half "bottom" withe a empty pixel's with of space.) any idea why this happens and how i might fix it.