Cant you just save the files as .jpg and upload as an attachment here?

jpg isn't a very clean compression method for this, but here :

swelnet:
I'm not sure what you're expecting.
This screenshot looks great to me. There are no glitches visible.

It's a little blurry, but all 2d games will to some extent if you stretch them... Unless of course you turn off texture filtering. It'll give you a sharper if pixelated image.

I'm looking for a shader / something that makes 2D look crispier, like what 2xSal does.

That is why I was wondering of what scaling would do on 2D graphics like in Odin Sphere!