Auto Straightener - Version 1.3.8 These are older scanned documents that we have on file i.e. there's no possibility of re-scanning as the original documents are long gone. Auto Straightener can detect skewed texts and images in scanned documents, and output a straightened version. This software allows you to straighten scanned image file and PDF file. The straightening is totally automated. This software allows you to straighten scanned image file and PDF file. The straightening is totally automated. It is a handy tool for those who are working with scanned content regularly, allowing them to try to repair a file instead of striving to find the original document.