Measure PDF area in React Native
Measure area in a PDF using PSPDFKit for React Native starting with version 2.6. To measure area in your app, contact the Sales team to add the Measurement Tools component to your license, or run the SDK in trial mode.
Measure area in one of the following ways:
Measuring the Area of a Polygon
Measure the area of a customdrawn polygon in one of the following ways:
Measuring the Area of a Polygon Using the BuiltIn UI
To measure the area of a polygon using the builtin UI, follow these steps:

Touch and hold the annotation tools icon.

Tap Polygon Area.

Draw a polygon around the area you want to measure.
Measuring the Area of a Polygon Programmatically
To measure area programmatically in React Native, contact Support.
Measuring the Area of an Ellipse
Measure the area of an ellipse in one of the following ways:
Measuring the Area of an Ellipse Using the BuiltIn UI
To measure the area of an ellipse using the builtin UI, follow these steps:

Touch and hold the annotation tools icon.

Tap Ellipse Area.

Draw an ellipse around the area you want to measure.
Measuring the Area of an Ellipse Programmatically
To measure area programmatically in React Native, contact Support.
Measuring the Area of a Rectangle
Measure the area of a rectangle in one of the following ways:
Measuring the Area of a Rectangle Using the BuiltIn UI
To measure the area of a rectangle using the builtin UI, follow these steps:

Touch and hold the annotation tools icon.

Tap Rectangle Area.

Draw a rectangle around the area you want to measure.
Measuring the Area of a Rectangle Programmatically
To measure area programmatically in React Native, contact Support.
Configuring Measurements
For more information on configuring measurements, see the guide on configuring measurements.