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super-image-cropper

v1.0.23

Published

Crop GIF / PNG / JPG / JPEG images using Javascript.

Downloads

3,025

Readme

Super Image Cropper

Crop GIF / PNG / JPG / JPEG images using Javascript.

npm npm GitHub license

Features

  • Support for GIF cropping.
  • Support for collaboration with cropperjs.
  • Support for PNG / JPG / JPEG cropping.

Experience

Preview

GIF

Static Image

Getting started

Installation

npm i super-image-cropper -S

or

yarn add super-image-cropper -S

Usage

Recommend for use with cropperjs.

Properties

  • src: image url.
  • crossOrigin: set image crossOrigin strategy.
  • cropperInstance: cropperjs instance.
  • cropperJsOpts:
    • x: the offset left of the cropped area.
    • y: the offset top of the cropped area.
    • width: the width of the cropped area
    • height: the height of the cropped area.
    • rotate: the rotated degrees of the image.
    • scaleX: the scaling factor to apply on the abscissa of the image.
    • scaleY: the scaling factor to apply on the ordinate of the image.
    • background: GIF background color.
  • gifJsOptions: gif.js options.
  • outputType: Set output type.
    • base64: Output base64.
    • blob: Output blob object.
    • blobURL: Output blob url. (e.g: blob:http://localhost:3000/8a583ca5-e87c-4750-93b0-da05f69b702a)

Working with cropperjs

  <img id="cropperJsRoot" src="xxx.gif"></img>
import { SuperImageCropper } from 'super-image-cropper';
import Cropper from 'cropperjs';

const image = document.getElementById('image') as HTMLImageElement;
const cropperInstance = new Cropper(image, {
  aspectRatio: 16 / 9,
  autoCrop: false,
  autoCropArea: 1,
  minCropBoxHeight: 10,
  minCropBoxWidth: 10,
  viewMode: 1,
  initialAspectRatio: 1,
  responsive: false,
  guides: true
});

const imageCropper = new SuperImageCropper();

imageCropper.crop({
  cropperInstance: cropperInstance,
  src: 'xxx.gif',
  outputType: 'blobURL' // optional, default blob url
}).then(blobUrl => {
  const img = document.createElement('img');
  img.src = blobUrl;
  document.body.appendChild(img);
});

Use alone

If not used with cropperjs, the src parameter must be passed.

import { SuperImageCropper } from 'super-image-cropper';

const imageCropper = new SuperImageCropper();

imageCropper.crop({
  src: gifUrl,
  cropperJsOpts: {
    width: 400,
    height: 240,
    rotate: 45,
    y: 0,
    x: 0,
  }
}).then(blobUrl => {
  const img = document.createElement('img');
  img.src = blobUrl;
  document.body.appendChild(img);
});

Example

  • Used with react-cropper or cropperjs in react: React App.