There are no size limitations with the code. I just ran it on the biggest .jpg I had kicking around and it ran fine. Slow, but fine: 

c:\test\img\tmp>imageinfo --verbose worldx2-2.jpg
worldx2-2.jpg
        File format: JPEG
        MIME type: image/jpeg
        Width (pixels): 5400
        Height (pixels): 2700
        Bits per pixel: 24
        Number of images: 1
        Physical width (dpi): 72
        Physical height (dpi): 72
        Physical width (inches): 75
        Physical height (inches): 37.500000
        Number of textual comments: 0

c:\test\img\tmp>..\..\Jpg2bmp.pl worldx2-2.jpg

c:\test\img\tmp>imageinfo --verbose worldx2-2.bmp
worldx2-2.bmp
        File format: BMP
        MIME type: image/bmp
        Width (pixels): 5400
        Height (pixels): 2700
        Bits per pixel: 24
        Number of images: 1
        Physical width (dpi): 300
        Physical height (dpi): 300
        Physical width (inches): 18
        Physical height (inches): 9
        Number of textual comments: 0

[download]

However, as noted above, it does only work for 24-bit images! I've updated the node with a slightly modified version that will abort if the image is not 24-bit.

It could be modified to handle palette images but it is a fair amount of work and there are far better (faster & more comprehensive) tools out there for performing image conversions.

Examine what is said, not who speaks -- Silence betokens consent -- Love the truth but pardon error.
"Science is about questioning the status quo. Questioning authority".
In the absence of evidence, opinion is indistinguishable from prejudice.
"Too many [] have been sedated by an oppressive environment of political correctness and risk aversion."

In reply to Re^3: jpg to bmp in Windows by BrowserUk
in thread jpg to bmp in Windows by rochlin

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