Take screenshot and compress it

I've set up a system that takes a lot of screenshots and outputs them as png files.
I use the "Screen capture object" and have deactivated "Capture high color modes in 24 bits".

However, when I open one of these files in MS paint and re-save it as PNG, the file size is 53% smaller.

Are there some other options which compresses the PNG file better? The forums mention the surface object, but I don't know how to take a simple screenshot using this object.

Quote from Linky

Check this: Please login to see this link.

Thank you, this example seems to save the file at a more reasonable size.

Quote from Xhadoe

Have you had any luck if it allows saving to .jpg or .bmp?

The "Screen capture" object does allow for this, but still does not compress it.

Linky I just added this concept to my project, and while it does compress the PNG, it seems to have issues when i scale the screen using the window control object.

My goal is to generate a mini--world-map. So I've made a system that:

• loads a level
• scales down the screen using the Window control object
• takes a screenshot

The system then loops through all the levels and repeats.

So this is the output I want, a large level scaled down:

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But the Surface object returns this, which I believe is the top left corner un-scaled:

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Alternatively I could just use the "Screen capture" object and then separately find some batch tool that saves the PNG as a compressed PNG. Anyone knows some good tools here?

Quote from Phi

Surface Object can make a compressed 32-bit PNG (as PNG uses zlib compression), but if you're looking for pure black and white that'll still be bigger. You might want to use something that can make a pure black-white BMP - but not many libraries do that, and Fusion doesn't. Possibly you could make the BMP file yourself in Binary Object, but that won't be a simple thing to do.

Yes I tested Linky's example and it seems to compress rather well. Unfortunately it seems like I can't get a proper screenshot using the surface object when I scale the window using the window control object.

I could also just stick to the "Screen capture" object and use an additional tool that run a batch operation through all the images and compress them. Would love some tips on some good tools here!

Edit: Please login to see this link.actually seems quite nice for this