Is there any way to get an pixel perfect collider generation on pixel sprites?

Question

I'm trying to add 2D colliders to my pixel sprites, but when I add the collider, it doesn't generate accurately, even with the sprite's outline tolerance at the max sprite's outline tolerance at the max. I've also tried using the PixelCollider2D script from https://github.com/RandomiaGaming/Unity2DPixelPerfectCollider, but it doesn't work for me, as it generates a collider from all the sprites on the spritesheet generates a collider from all the sprites on the spritesheet. Is there any way of being able to generate a pixel-perfect collider for my sprites? Setting them all manually will take far too long. Thank you in advance!