Converting image file formats, e.g. *.png to *.jpg

[Moltke]

[quote author=Moltke link=topic=4614.msg35184#msg35184 date=1506028289]
Hi. Another way to do this is by selecting the *png file, right click on it and then select save a copy, in the saving window simply name the file adding the *jpg extension and save it, that's it.  ;D

Are you sure that renaming a file =  converting the file format?
I'm certainly no expert by any measure, but this doesn't seem right. Following the same logic one could suffix linux driver names with *.exe to make them work in Windows, which of course is not the case....

Could someone with some knowledgeable overview on this please comment?
I don't mean any disrespect towards you Moltke, whatsoever, when I say that and I hope it doesn't come across that way - I may well be incorrect with the comment I've made.

Many thanks
Mike
[/quote]

hI [member=458]m654321[/member]
Well, first of all is not as simple as that, I forgot  and I did mentioned in another comment, that for that to work you have to open the *png file in ristretto then click on "file menu" select "save a copy", when saving rename the file adding the *jpg extension and that's it. It worked for me. However, I did noticed that ristretto doesn't recognize the new file as a *jpg file while image magick does. Regarding your coment "Following the same logic one could suffix linux driver names with *.exe" this won't work because an *.exe file has some other attributes/properties which you can't just change by renaming it. I know this method can work on certain file types like images and texts, at least in windows it is possible check this out https://www.techwalla.com/articles/how-t...rar-to-cbr. I guess it should be possible in Linux too.  ;D