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by MattGaiser 2219 days ago
> why wouldn't changing the extension trigger the OS to convert the file?

If you change the extension on any operating system and then open it in the image viewer, it does appear to work. It doesn't as image viewers do not trust the file extension and ignore it, but there is no indication of that to the average user.
1 comments
cesarb 2219 days ago
> image viewers do not trust the file extension and ignore it

Not all of them; for instance, if I rename a .jpg to a .png exension and try to open it with Gnome's EOG, it presents an error saying "Not a PNG file", instead of showing the image.

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WillDaSilva 2219 days ago
A behaviour which I'm quite fond of, as it allows me to fix the file extensions. I generally don't like relying on the file extension for information, but it helps me keep my media collection clean in this case. It'd be ideal if it displayed the image anyway, while also displaying a warning message that says the extension doesn't match the actual file type.
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