Coin Volcano

Coin Volcano is an offline workspace for checking cover art, thumbnails and social layouts before export.

Create projects in 16:9, 9:16, 1:1, 4:5 or a custom size. Add a still image, position it with pinch zoom and drag gestures, then place configurable guides for titles, subtitles and important objects. Build several variants of the same layout and compare them side by side without changing the source file.

Key features:

• Configurable safe zones and rule-of-thirds grid
• Multiple variants per project
• Undo and redo while editing
• Automatic local draft saving
• Search, sorting and favorites
• PNG export with guides or as a clean image
• JSON backup of project settings
• Light, dark and system themes
• No account, subscription, advertising or required internet connection

Your projects stay on your device. Safe Frame Preview uses Android's system pickers so it accesses only files you explicitly choose.