What is GraphicConverter 6.5 Classic?

It does what it says - and much more. Long before Apple included it, it was possible (though maybe not recommended on slower macs) to set any picture as desktop background (most classic MacOS versions only support background patterns).

It allows basic picture editing and effects. It can do things like batch processing of folders and is actually the "swiss army knife" for graphic conversions.
Among other things, the Convert feature allows opening a resource file and extracting all the picture files contained by it.
If picture files don't have preview thumbnails in Finder but merely appear as generic image files, you can browse the folder in GraphicConverter, and it will automatically generate thumbnails for them.

In fact classic MacOS lacked a powerful graphic converter (or even a basic one) - so even Apple shipped a licensed version of this tool with their PowerMacs in the 2000's (like the PowerMac G5)

This is the last version compatible with MacOS 9.

For older versions, check out GraphicConverter 5.x

Tested in PPC G3 running 9.2.2:

Name: GraphicConverter User
SN: GCV6-EPARKR-ZAA

Download GraphicConverter 6.5 Classic for Mac

Architecture

OSX Universal Binary

System Requirements

From Mac OS 9.0 up to Mac OS 10.12

Compatibility notes

Architecture: PPC + Intel x86 (Universal)

Mac OS 9.x - Mac OS X

 

Emulating this? It could probably run under: SheepShaver