The rapid influx of low-quality data visualisations is one of the main challenges in today's communication. Misleading, unreadable, or confusing visualisations spread misinformation, failing to fulfill their purpose. The lack of proper tooling further heightens the problem of the quality assessment process. Therefore, we propose VisQualdex, a systematic set of guidelines isnpired by the Grammar of Graphics for evaluating the quality of data visualisations. To increase the practical impact of VisQualdex, we make these guidelines available in the form of the web server, visqual.info.

翻译：低质量数据可视化的急剧增加是当今信息传播中的主要挑战之一。具有误导性、难以阅读或令人困惑的可视化内容会传播错误信息，无法实现其预期目的。缺乏合适的工具进一步加剧了质量评估过程中的问题。为此，我们提出VisQualdex——一套受图形语法启发、用于评估数据可视化质量的系统性指南。为增强VisQualdex的实用性，我们以网络服务器visqual.info的形式提供这些指南。