This article reviews the impact of new technologies through Legal Design tools on the established approach to the preparation of procedural documents and the legal community as a whole. What is Legal Design and what are the reasons for its emergence and development? What is the Concept of perfect procedural document? What are the main challenges that can be solved with Legal Design? How to work with the tools of Legal Design and when it is appropriate? These and many other questions are answered by the authors in this article. As a result, the article is not only of general theoretical nature, but also has an applied value, and therefore will be useful and interesting to practicing lawyers. © 2022, The Author(s), under exclusive license to Springer Nature Singapore Pte Ltd.