Today with the development of the Internet, data is used in more and more places, such as training the model and data analysis for businesses and governments to improve their services or gain benefits. With more and more data, it is difficult for people to monitor the quality and accuracy of all data. Poor quality data can lead to some negative results. The aim of the thesis is to design and develop a web-application to do data quality analysis based on a generalized algorithm provided by Davide Vitaletti, and display the analysis results visually for users. The application includes back-end and front-end.