Expo Image Crop Tool

An image cropping tool for Expo that allows cropping of the given image. Can be used alongside a library like expo-image-picker to provide a more fully-featured cropping experience for users.

Installation in managed Expo projects

For managed Expo projects, please follow the installation instructions in the API documentation for the latest stable release. If you follow the link and there is no documentation available then this library is not yet usable within managed projects — it is likely to be included in an upcoming Expo SDK release.

Installation in bare React Native projects

For bare React Native projects, you must ensure that you have installed and configured the expo package before continuing.

Add the package to your npm dependencies

npm install expo-image-crop-tool
cd ios
pod install

Usage

For basic examples, see example/App.tsx.

openCropperAsync(options: OpenCropperOptions) => Promise<OpenCropperResult>

openCropperAsync will return the path to the cropped image, or will throw an error if something goes wrong.

OpenCropperOptions

| Key | Type | iOS | Android | Description | |-----|------|-----|---------|-------------| | imageUri | string | ✅ | ✅ | A path to the image that you want to crop. | | shape | string | ✅ | ✅ | The shape that you want the returned image to be ('rectangle' | 'circle'). Default is rectangle. | | aspectRatio | number | ✅ | ✅ | If you want to force a particular aspect ratio for the output image. | | format | string | ✅ | ✅ | The format of the output image ('png' | 'jpeg'). Default is png. | | compressImageQuality | number | ✅ | ✅ | If outputting a JPEG image, the compression quality for the output image. | | rotationEnabled | boolean | ✅ | ✅ | Whether or not to allow the user to rotate the image in 90 degree segments. Default is true. | | rotationControlEnabled | boolean | ✅ | | Whether or not to show the rotation control view. Default is true. | | cancelButtonText | string | ✅ | ✅ | Custom text for the Cancel button. | | doneButtonText | string | ✅ | ✅ | Custom text for the Done button. |

OpenCropperResult

| Key | Type | Description | |-----|------|-------------| | path | string | Path of the output image | | size | number | Size in bytes of the output image | | width | number | Width of the output image | | height | number | Height of the output image | | mimeType | string | MIME type of the output image |