Access Settings via the gear icon in the sidebar, or press the Settings button at the bottom of the left panel.

Display

• Default sort order (Name / Date / Size / Type)
• Default thumbnail size (80–220px, default: 140px)
• Stack image sequences (auto-group numbered files, default: ON)

Windows Integration

• Minimize to tray on close
• Replace Win+E with Halcyon (intercepts the Windows Explorer shortcut)

Cache Management

• Clear thumbnail cache
• Clear recent files list
• Restore default sidebar pins
• View AI search cache size and item count
• Clear AI search cache

Mini-App Settings

• Power Rename: pattern config
• Compress: default format and quality
• AI Visual Search: auto-index toggle, similarity threshold, model management