To learn about the changes made in file whether the changes are correct, you will need to compare files word-by-word. The need for a tool that could perform this task with ease arose when documents with multiple versions existed and when there was a need for identifying the differences in similar files little differences. Also, ability to compare files was developed for files that had a common antecedent. It is useful in a case you have two versions of the same document. This utility came to the market in the form of Compare PDF 2.0 that allowed comparison by keywords that helped people to compare unrelated documents. Differences could not be pointed out without using such a tool. Comparison by keywords is helpful in case you want to learn what changes were made in the common context of the document. For example you can learn what the key difference between documents was or what the focus of both compared files was. You can have two unrelated documents which can be quickly viewed and analyzed by keywords.
Compare PDF aims at helping you find out whether documents are similar and spot the differences between the two. By identifying the mostly used keywords in both files...