Converting Image Formats

[eluser]cassy[/eluser]
@vbsaltydog.
Thanks. I've using exif_imagetype to get the file type, it seems to be much better than using the mime type.

[eluser]CroNiX[/eluser]
Yeah, unless someone uploads a .php file or a .txt or something else...

[eluser]Faulkner[/eluser]
As for this question, my way is take some <a href="http://www.rasteredge.com/dotnet-imaging/image-convert/">image conversion program</a> to convert any format.