Jump to the Slices panel, expand the slice entry and alter the export format or choose an Export preset from the pop-up menu (PNG, JPEG, and Apple icon design presets only).
(Optional) On the Slices panel, click the + icon under the export format entry to add an additional graphic export format.
(Optional) On the Slices panel, click the indented + icon under the export size entries to add increasing levels of resolution (2x, 3x, etc.) to the export format.
Do one of the following, to control what gets exported:
Select Click to export all formats for this item.
Select Click to export this format. This exports all sizes specified for the selected slice.
Select Click to export this size. This exports a specific export format for a slice at a specific size.
Click Export Slices (n) to export all formats and sizes for all checked slices in the Slices panel.
Navigate to and select the storage folder for the exported image(s) and then click Export.
(Optional) On the Slices panel, select Continuous if you want to automatically re-export export areas if the document is subsequently changed. This option is only available if Export Slices (n) was selected above.
To export drawn slices:
Select the Slice Tool.
Drag on the page to select areas.
Repeat step two onward from the procedure above, as required.
To set default export options:
On the Export Options panel, select the Defaults tab.
Adjust settings as appropriate.
Jump back to the Selection tab when finished.
The settings will be used when your next slice is created.
To reset the dimensions of a manually resized export area created from a layer:
With the Slice Tool, select a resized export area.
On the context toolbar, select Revert to auto sized.