vue-croppa

A simple straightforward customizable mobile-friendly image cropper for Vue 2.0.

Features

• Straightforward: What you see is what you get
• Highly customizable: You can almost customize anything except the core functionalities
• Mobile-friendly: Supports drag to move and pinch with two fingers to zoom on mobile devices
• EXIF orientation: v0.2.0+ Support correctly show image with EXIF orientation

Browser Support

• IE 10+
• Firefox 3.6+
• Chrome 6+
• Safari 6+
• Opera 11.5+
• iOS Safari 6.1+
• Android Browser 3+

Template Example

<croppa v-model="myCroppa"
        :width="400"
        :height="400"
        :canvas-color="'default'"
        :placeholder="'Choose an image'"
        :placeholder-font-size="0"
        :placeholder-color="'default'"
        :accept="'image/*'"
        :file-size-limit="0"
        :quality="2"
        :zoom-speed="3"
        :disabled="false"
        :disable-drag-and-drop="false"
        :disable-click-to-choose="false"
        :disable-drag-to-move="false"
        :disable-scroll-to-zoom="false"
        :disable-rotation="false"
        :prevent-white-space="false"
        :reverse-scroll-to-zoom="false"
        :show-remove-button="true"
        :remove-button-color="'red'"
        :remove-button-size="0"
        :initial-image="'path/to/initial-image.png'"
        @init="handleCroppaInit"
        @file-choose="handleCroppaFileChoose"
        @file-size-exceed="handleCroppaFileSizeExceed"
        @file-type-mismatch="handleCroppaFileTypeMismatch"
        @new-image-drawn="handleNewImage"
        @image-remove="handleImageRemove"
        @move="handleCroppaMove"
        @zoom="handleCroppaZoom"></croppa>

NOTE: This is an almost-full-use example. Usually you don't need to specify so many props, because they all have default values. Most simply, you can even do:

<croppa v-model="myCroppa"></croppa>

Method Examples

this.myCroppa.remove();

this.myCroppa.zoomIn();

alert(this.myCroppa.generateDataUrl());

Quick Start

1. Import vue-croppa into your vue.js project.

Using build tools:

npm install --save vue-croppa

import Vue from 'vue';
import Croppa from 'vue-croppa';

Vue.use(Croppa);

// If your build tool supports css module
import 'vue-croppa/dist/vue-croppa.css';

Not using build tools:

<link href="https://unpkg.com/vue-croppa/dist/vue-croppa.min.css" rel="stylesheet" type="text/css">
<script src="https://unpkg.com/vue-croppa/dist/vue-croppa.min.js"></script>

Vue.use(Croppa);

2. Now you have it. The simplest usage:

<croppa v-model="myCroppa"></croppa>

new Vue({
  // ... other vm options omitted
  data: {
    myCroppa: {}
  },

  methods: {
    uploadCroppedImage() {
      this.myCroppa.generateBlob(
        blob => {
          // write code to upload the cropped image file (a file is a blob)
        },
        'image/jpeg',
        0.8
      ); // 80% compressed jpeg file
    }
  }
});

Live example: https://jsfiddle.net/jdcvpvty/2/

NOTE:

• Since v0.1.0, you can change the default component name to anything you want.

import Vue from 'vue';
import Croppa from 'vue-croppa';

Vue.use(Croppa, { componentName: 'my-image-cropper' });

<my-image-cropper v-model="myCroppa"></my-image-cropper>

• Since v0.1.1, you can get the component object with Croppa.component. This is useful when you want to register the component by yourself manually.

Vue.component('croppa', Croppa.component);

// Register async component (Webpack 2 + ES2015 Example). More about async component: https://vuejs.org/v2/guide/components.html#Async-Components
Vue.component('croppa', () => import(Croppa.component));

• Since v1.0.0, the v-modeled value and the ref both point to the same thing - the component itself. So you don't need to set v-model anymore if you have a ref on the component.

<croppa ref="myCroppa"></croppa>

this.$refs.myCroppa.chooseFile();
this.$refs.myCroppa.generateDataUrl();
// ...

Documentation

🌱 Props

v-model

A two-way binding prop. It syncs an object from within the croppa component with a data in parent. We can use this object to call useful methods (Check out "Methods" section). Since v1.0.0, you don't need this anymore, the ref on component can also be used to call methods.

• type: object
• live example: https://jsfiddle.net/jdcvpvty/2/

width

Display width of the preview container.

• type: number
• default: 200
• valid: val > 0

height

Display height of the preview container.

• type: number
• default: 200
• valid: val > 0

placeholder

Placeholder text of the preview container. It shows up when there is no image.

• type: string
• default: 'Choose an image'

placeholder-color

Placeholder text color.

• type: same as what CanvasRenderingContext2D.fillStyle accepts.
• default: '#606060'

placeholder-font-size

Placeholder text font size in pixel. When set to 0, the font size will be ajust automatically so that the whole placehoder only takes up 2/3 of the container's width.

• type: number
• default: 0

canvas-color

Initial background color and white space color if there is an image.

• type: same as what CanvasRenderingContext2D.fillStyle accepts.
• default: before v0.2.0 - '#e6e6e6'; after v0.2.0 - 'transparent'

quality

Specifies how many times larger the actual image is than the container's display size.

• type: number
• default: 2
• valid: val > 0

zoom-speed

Specifies how fast the zoom is reacting to scroll gestures. Default to level 3.

• type: number
• default: 3
• valid: val > 0

accept

Limits the types of files that users can choose.

• type: same as what accept attribute of HTML input element takes.
• default: no default value since v1.0.0. Specify it as you need.

file-size-limit

Limits the byte size of file that users can choose. If set to 0, then no limit.

• type: number
• default: 0

disabled

Disables user interaction.

• type: boolean
• default: false

disable-drag-and-drop

Disables the default "drag and drop a file" user interaction. You can instead trigger the file chooser window programmatically by "click to choose" functionality or invoking chooseFile() method.

• type: boolean
• default: false

disable-click-to-choose

Disables the default "click to choose a file" ("tab" on mobile) user interaction. You can instead trigger the file chooser window programmatically by "drag and drop" functionality or invoking chooseFile() method.

• type: boolean
• default: false

disable-drag-to-move

Disables the default "drag to move" user interaction. You can instead move the image programmatically by invoking moveUpwards() / moveDownwards() / moveLeftwards() / moveRightwards() methods.

• type: boolean
• default: false

disable-scroll-to-zoom

Disables the default "scroll to zoom" user interaction. You can instead zoom the image programmatically by invoking zoomIn() / zoomOut() methods.

• type: boolean
• default: false

disable-pinch-to-zoom

Disables the default "pinch with two fingers to zoom" user interaction on mobile. You can instead zoom the image programmatically by invoking zoomIn() / zoomOut() methods.

• type: boolean
• default: false

disable-rotation

(v0.2.0+) Rotation methods won't work if this is set to true

• type: boolean
• default: false

reverse-zooming-gesture

Deprecated Please use reverse-scroll-to-zoom instead.

Reverses the zoom-in/zoom-out direction when scrolling.

• type: boolean
• default: false

reverse-scroll-to-zoom

Reverses the zoom-in/zoom-out direction when scrolling.

• type: boolean
• default: false

prevent-white-space

Prevents revealing background white space when moving or zooming the image.

• type: boolean
• default: false

show-remove-button

Specifies whether to show the built-in remove-button. You can change the button's color and size using the following two props. If you still find it ugly, hide it and use the remove() method to implement your own trigger.

• type: boolean
• default: true

remove-button-color

Changes the default color of the remove-button. Accepts any css color format.

• type: string
• default: 'red'

remove-button-size

Specifies the remove-button's width and height (they are equal). If set to 0, then it use the default size.

• type: number
• default: default size is ajust accordingly to container's size

initial-image

(v0.1.0+) Set initial image. You can pass a string as the url or an Image object (HTMLImageElement instance). This is an alternative way to set initial image besides using slot. Useful when you want to set cross origin image as initial image.

• type: string or object (HTMLImageElement instance)
• default: undefined

initial-size

(v0.2.0+) works similar to css's background-size. It specifies the image's size when it is first loaded on croppa. contain and natural won't work if prevent-white-space is set to true.

• type: string
• default: 'cover'
• valid: one of 'cover', 'contain', 'natural'

initial-position

(v0.2.0+) works similar to css's background-position. It specifies the image's position relative to croppa container when it is first loaded.

• type: string
• default: 'center'
• valid:
  • 'center' (default value)
  • 'top'
  • 'bottom'
  • 'left'
  • 'right'
  • composition of the above words ('top left', 'right top' etc.)
  • '30% 40%' (similar to background-position in css)

input-attrs

(v1.0.0+) to pass attributes to the hidden input[type=file] element.

<croppa :input-attrs="{capture: true, class: 'file-input'}"></croppa>

show-loading

(v1.1.0+) show default loading spinner at the bottom right corner of the container when image is loading (will but not yet be drawn on canvas).

• type: boolean
• default: false

loading-size

(v1.1.0+) loading spinner's size in px.

• type: number
• default: 20

loading-color

(v1.1.0+) loading spinner's color in css color value formats.

• type: string
• default: '#606060'

replace-drop

(v1.1.4+) Replace current image on drag and drop.

• type: boolean
• default: false (By default you need to remove the current image to drop a new one)

passive

(1.2.0) Switch to passive mode. Croppa in passive mode will sync state with another croppa if they v-model the same object. Also it will not have self-control - user can't manipulate image on passive croppa. This is useful as a preview component.

These states will be synced:

[
  'imgData',
  'img',
  'imgSet',
  'originalImage',
  'naturalHeight',
  'naturalWidth',
  'orientation',
  'scaleRatio'
];

• type: boolean
• default: false
• Demo

image-border-radius

(1.2.0) Set rounded corders to image. Note that this has effect on the output image. Note that it only works when prevent-white-space is true. (Demo)

• type: number or string
• default: 0\

auto-sizing

(1.3.0) If it is set to true, width and height will not work. Instead, croppa will adjust itself to it's container(.croppa-container)'s size. It's useful to make croppa's dimension responsive.

• type: boolean
• default: false
• Demo

video-enabled

(1.3.1) If it is set to true, you can choose a video file. If the video is support