Background is not transparent when exporting PNG/WebP file formats
In the Export Settings dialog, check Export transparency checkbox.
Steps
1. Make sure that the Paper layer is hidden.
2. Select File menu > Export (Single Layer) > .png (PNG) or .webp (WebP).
Note: For Android, you can also export in PNG and WebP file formats from Flatten and save to device storage.
3. Specify the file save location.
4. In the PNG export settings or WebP export settings dialogs, check Export transparency and then tap OK to export the file.
Computers and Tablets
Smartphones
If Export transparency doesn’t show
If Export transparency doesn’t show, make sure that Export alpha channel is checked.
From Ver. 4.1 and later, the term Export alpha channel has changed to Export transparency.