CropJS is a lightweight soft crop tool for to integration into other projects. It uses TrackingJS to enable automatic feature and face detection based cropping for a preset number of predefined crop dimensions.
npm install @infomaker/cropjs
<div id="crop_impl"></div>
// Get div where cropjs is loaded
var div = document.getElementById('crop_impl');
// Get access to the editor object
if (typeof editor == 'undefined') {
editor = new IMSoftcrop.Editor(
'crop_impl',
{
autocrop: true,
detectWorkerUrl: '/cropjs/js/imcrop.worker.detect.js',
detectThreshold: 20,
detectStepSize: 2.5,
debug: false,
debugElement: document.getElementById('imc_debug')
}
);
// Add save handler
editor.onSave(function (cropdata) {
});
// Add cancel handler
editor.onCancel(function (cropdata) {
});
}
editor.addImage(
image.src,
function (addedImage) {
this.addSoftcrop('1:1', true, 1, 1);
this.addSoftcrop('16:9', false, 16, 9);
this.addSoftcrop('3:2', false, 3, 2);
this.addSoftcrop('fixed', false, 800, 400, 100, 20);
}
);
npm install
npm run dev // Start development server and file watch
npm run build // Build and minify files for project
Using tracking.js for feature and face detection.