Swap all images back to originals
Restore the original non-optimised images in an InDesign document.
Click Swap all images back to originals to exchange the slimmed versions of images in an InDesign document, created by the Slim selected images or Slim all images in document tool, back to the original, non-optimised images.
The scaling and placement of the images is retained. You can check the Links panel to verify that the images have been swapped.
In InDesign you can elect to view an additional column in the Links panel to check the Effective PPI of images within the document:
To add the column choose InDesign Window menu > Links > Panel Options from the panel menu: