How do I fix PNG extension error

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I want post an image and am getting the error. My first 2 g2x had no issues.

I had to choose the smaller img before but it worked.

Any way to fix this? I've tried to rename the image.

Sent from my LG-P999 using XDA Premium App

There might be a app that convert the picture extension to something readable such as .jpg.

I will try to find one and report back if I do.

Originally Posted by moshe22

There might be a app that convert the picture extension to something readable such as .jpg.

I will try to find one and report back if I do.

Thanks.

Sent from my LG-P999 using XDA Premium App