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Review the page composite before choosing File → Export PNG or File → Export PSD.
1

Select the pages

Select pages in the page rail to export that selection. With no page selection, Koharu exports the active page.
2

Choose a format

A flattened image for delivery and review. It includes translated text, artwork, visibility, opacity, fitting, fill, and stroke from the retained renderer.
3

Choose a destination

Select an output directory in the native folder dialog. Filenames use a four-digit counter in the order the pages are exported, followed by the page label:
A single page or a Shift-click range follows project order; a Ctrl-click selection follows click order. Characters that are invalid in filenames become underscores, and everything after the last dot in a label is dropped, so vol.1 becomes vol. Existing files in the directory are overwritten.
PSD is an interchange format. It does not preserve all OCR semantics, model provenance, revision history, or renderer behavior as native Photoshop concepts. Keep the .khrproj directory as your editable source and backup.

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Check consistency

Canvas, PNG, and PSD begin with the same scene and prepared rendering result. If they differ, report the project revision, page, format, and images through troubleshooting. There is no separate “inpainted image only” export.