Since its creation, Adobe’s Portable Document Format–or PDF–has undergone a lot of changes. Each version of Adobe Acrobat–the program used to create and edit PDF files–continues to add various types of functionality. Depending on your version of Acrobat or Acrobat Reader, you may not benefit from the functionality of certain PDF files. You can change the version of the PDF to extend compatibility to older versions of Acrobat to solve this issue. Tips Warnings Writer Bio
