Deskew

If you ever scanned a document, you are probably aware that the scanned document can appear a little of, mostly due to rotation. However, this inconvenient situation can be fixed by using third-party applications, such as Deskew, which can help you rotate the document to its natural position by detecting the lines of text and using them as markers.

Portable tool

Since this utility is portable, it does not require you to install it on the target computer, as simply unpacking the archive and launching the executable grants you full control to its functions.
Its portability makes it possible that you can run it from removable storage media, such as USB flash drives or external HDDs, as well. More so, it does not tamper with your Windows registry entries, nor does it create additional files or folders on your computer without your explicit permission.

Command-Line Interface (CLI)

Deskew does not come with a standard Graphical User Interface (GUI) but packs a Command-Line Interface instead, which can disconcert some users that might find it difficult to operate its functions without trouble.
More so, it requires no additional configuration. Despite its lack of standard help documentation, launching its executable without any arguments in a command prompt window lets you view brief instructions on how to handle it, which should come in handy for many users.

Deskews scanned documents easily

This program can help you deskew scanned documents from your computer by detecting the lines of text within the specified file and rotating the image so that the lines are aligned horizontally, as they are in the original document.
In order to use it, you need to launch its executable from a command prompt along with the required arguments, which control the input, output, angle, threshold, color, format, and file information.

Portable command-line document deskewer

All things considered, Deskew is a handy application that can help you deskew scanned documents with minimum efforts. It requires no installation as it is portable, comes with brief instructions that can be accessed by launching its executable without arguments and needs no additional configuration.