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The HTML5/JavaScript Smith Chart is a control for showing the parameters of transmission lines in high-frequency circuit applications. Its rich feature set includes features like legends, markers, tooltips, and data labels.

Rendering type

Visualize both the impedance and admittance of transmission lines with a Smith chart.

Rendering types example

Title and subtitle

Add a title and subtitle to the JavaScript Smith chart control to visualize additional information on the Smith chart. You can customize the font and alignment of the title and subtitle.

JavaScript Smith chart with title and subtitle

Multiple series

Plot any number of line series for representing data.

JavaScript Smith chart with multiple series

Axis customization

The JavaScript Smith chart control supports a horizontal axis and radial axis. The horizontal axis is used for plotting resistance values of transmission lines and the radial axis is used for plotting nonresistance values of transmission lines.

Customized axis example

JavaScript Smith chart with customized axis


Markers highlight data points to improve readability.

JavaScript Smith chart with markers

Data labels

Easily annotate the data points with labels to help improve the readability of data. The data labels in the JavaScript Smith chart control are smartly arranged to avoid intersection when there are large amounts of data.

JavaScript Smith chart with data labels


A legend provides additional information that is helpful in identifying individual series in a Smith chart. It can be docked at the left, right, top, or bottom positions around the plot area. By clicking a legend item, we can toggle series visibility.

JavaScript Smith chart rendered with legend


Animate the series in the JavaScript Smith chart while rendering.

JavaScript Smith chart with animation


The interactive JavaScript Smith chart displays a pop-up with additional information when the mouse is hovered over a data point.

Displays a tooltip on moving mouse over the JavaScript Smith chart


Print or export the rendered JavaScript Smith chart to save a local copy for further use.

Print and export example

Export JavaScript Smith chart illustration


You can export the Smith chart to a PDF document or in image formats such as SVG, PNG, and JPEG in client-side.

Print JavaScript Smith chart illustration


Print the rendered Smith chart directly from the browser.

Touch and browser support

The interactive Smith chart control also support touch interactions.

Touch illustration

Touch support

All the Smith chart features will work on touch devices with zero configuration. Use the touch features, such as tooltips and toggling series visibility using the legend, without any customization.

Responsive illustration


You can view the Smith chart control on various devices. Also hide specific elements in the Smith chart for particular screen sizes by making a very minimal change in the events.

Cross browser illustration

Cross-browser support

You can render Smith chart component in all the modern browsers.

Other supported frameworks

The Smith Chart component is also available in Blazor, React, Angular, and Vue frameworks. Check out the different Smith Chart platforms from the links below,


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