https://apexcharts.com/docs/options/yaxis/ Currently requires javascript - https://github.com/apexcharts/Blazor-ApexCharts/blob/cb8961d2423a63216afe21a3d0eed15c46e49555/src/Blazor-ApexCharts/Models/ApexChartOptions.cs#L4915 - https://apexcharts.github.io/Blazor-ApexCharts/features/formatters Actual issue for .NET formatter on Blazor SSR: https://github.com/apexcharts/Blazor-ApexCharts/issues/433