Before resorting to Photoshop 7 Portable, consider these legally safe, up-to-date portable image editors that support modern formats:
Adobe’s current model costs $20.99/month. Photoshop 7 Portable is a one-time "acquisition" (though legally dubious). It never phones home, never asks for a login, and works entirely offline. For users in areas with poor internet or strict firewalls, this is a godsend. Adobe Photoshop 7 Portable
A free, web-based editor that looks and feels almost exactly like Photoshop. Before resorting to Photoshop 7 Portable, consider these