Exporting produces a flat image of what you see on the canvas; your .dottie document keeps its layers. In Composite mode that is the stacked layers; in Tileset mode it is the sheet; with Wrap Tiles on it is the compacted wrap group.
Choose File > Export as Image Command+E.
Choose a format from the pop-up menu in the save panel:
| Format | Notes |
|---|---|
| PNG | Lossless with transparency. The default choice. |
| BMP, TIFF | Standard flattened bitmap formats. |
| GIF, APNG | Animated when you are not in Tileset mode and more than one visible layer (or timeline frame) can play back—every frame is written using its timing. In Tileset mode they export a still of the sheet (or wrap group). A single frame always exports as a still image. |
| SVG | Vector output with one rectangle per pixel, grouped per layer with layer opacity—scales to any size without blurring. Tileset and Wrap Tiles place each tile where it sits on the canvas. |
| XPM | Text-based X PixMap, handy for source code embedding. Flattened the same way as PNG. |
| ICO | Windows icon—wraps the flattened image as an icon (the exported picture must be 256×256 or smaller). |
PICO-8 (.p8) |
Exports the sprite sheet into a PICO-8 cartridge's |
Choose File > Export as Sheet Shift+Command+E to lay every layer out on a single PNG grid. The save panel offers:
The suggested filename ends in -table-<width>-<height>, so importing the sheet later restores each cell to its own layer.
Choose File > Share as Image Option+Command+S to send a flattened PNG to Mail, Messages, AirDrop, and other share destinations. The PNG is the same composite as Export as Image.