The purpose of writing this book is to provide the comprehensive knowledge of basic concepts of text compression techniques as well as new research area in this field. This self contained and well organized book focuses on new algorithms of text compression. That allows many useful operations over the compressed text. Many compression algorithms have been discussed in detail through examples, methods and are useful for students, professionals in IT industry and teachers from engineering discipline. An exhaustive list of references is also included and is very valuable resources for further study in the field of text compression.