Opened a few PICT files I threw at it.

Looking for an Export… item but did not see that. I suppose one reason to open an old PICT file is to save it as a PNG or something that will be easier to open in the future.

I just opened a PICT file in Preview on Mac and it also offers PDF export. What's the advantage of using this app?

Love this

Fantastic—I’ve written a QuickDraw PICT converter, but I focused narrowly on just extracting pixel data. The format is basically a way to encode QuickDraw drawing commands, and getting the original image back (in the general case) means reimplementing QuickDraw.

The old Mac game Avara used this format for levels. It was funky… you could place blocks in a 3D world, and control elevation and height by changing the corner radius of rectangles. You needed a QuickDraw image editor to make levels, like ClarisDraw.