> OctoPerf's load testing - Area Chart Report Item documentation page. Area Chart Report Item edition and usage.

Source: https://api.octoperf.com/doc/analysis/edit-bench-report/report-items/stacked-chart/

# Area Chart Item

![stacked-chart-metrics.png](https://api.octoperf.com/doc/analysis/edit-bench-report/report-items/img/stacked-chart-metrics.png){ align=left }

Area charts are useful to get a quick overview of HTTP Response code, HTTP methods and
HTTP response media types distribution **over time**. It allows to quickly spot if the web applications is running as expected.

![stacked-chart.png](https://api.octoperf.com/doc/analysis/edit-bench-report/report-items/img/stacked-chart.png)

## Configuration

![stacked-chart-configuration.png](https://api.octoperf.com/doc/analysis/edit-bench-report/report-items/img/stacked-chart-configuration.png)

You can change the mode between **Absolute** and **Percent** (default value) by clicking on the toggle button in the _Configuration_ settings tab.

![stacked-chart-absolute.png](https://api.octoperf.com/doc/analysis/edit-bench-report/report-items/img/stacked-chart-absolute.png)

Several metrics are available, please report to the [Donut Chart Metrics Availability](https://api.octoperf.com/doc/analysis/edit-bench-report/performance-metrics/#donut-chart-metrics) table. 

!!! note
    To customize the Area Chart metric, please refer to the documentation page about the [legend and metrics](https://api.octoperf.com/doc/analysis/edit-bench-report/metrics-selection/). You can only have one metric per area chart.

## Export

To export the chart please refer to the [dedicated documentation page](https://api.octoperf.com/doc/analysis/export-bench-report/export-report-items/#exporting-charts).