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How to determine if a photo is damaged?

I have a requirement when I have to determine if the image is damaged and, accordingly, mark it as such.

Another thing, I need to determine if the image has the wrong extension. What I mean by the wrong extension is that sometimes I came across a photo with the jpg extension, but when I upload this photo to IrfanView, it reports that the photo is in a different format, that extension.

How to do it in Delphi.

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I have a requirement when I have to determine if the image is damaged and, accordingly, mark it as such.

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