To convert a format, you generally need to the contents rather than "convert" the file itself. A

: If you prefer not to install software, sites like ezyZip or CloudConvert allow you to upload the archive and download the extracted .3ds file directly. Why are these files "converted"?

And so, Alex completed the scene, rendered the vintage car, and never searched for “7z to 3ds converter” again — because now Alex understood the difference between a suitcase and its contents.