Network diagramming is ways that have the power to show some relationships that are not normally noticed with standard data visualization techniques. Even these diagrams can help make sense of them, as one way to extract more meaning from those relationships is "network analysis". Thanks to network analysis, the strongest actors in the network, overly connected groups (cliques) or isolated actors can be revealed from the relationships between the actors (human, company, institution, etc.). Although there are tools such as UCINET and Gephi for network analysis, all these tools require installation as a desktop application. While UCINET is paid, Gephi uses old versions of Java Development Environment. Therefore, their installation is impractical. Although these current applications are very powerful, these tools require attention and expertise not only in installation but also in use. This makes it difficult for non-expert end-users who want to do some simple analysis. For this purpose, a webbased network analysis tool named Web3A has been developed within the scope of this article. With the help of Web3A, all centrality criteria of the network can be calculated over the Web3A web application, and the network can be visualized. This tool has been developed to enable researchers from all fields to perform network analysis quickly and simply. This study aims to demonstrate the working style of this developed tool through examples.