Cocosenor PowerPoint Unprotect Tuner is such a useful tool for removing the editable limits from PowerPoint documents. It can help to quickly unprotect the restric editing PowerPoint with no data loss.
Notes: if the PowerPoint presentation is encrypted by a open password instead of a restricted password (edit-protected, read-only), you'd better ask PowerPoint Password Tuner for help.
With PowerPoint Unprotect Tuner, you can click the "Add" button to add the PowerPoint file that is set with edit restriction password at ease.