vue-quill-editor相关文档：
https://github.com/surmon-china/vue-quill-editor
vue-quill-editor添加图片大小修改。
简单效果图：

image.png

1.安装

npm install quill-image-resize-module quill-image-drop-module --save

2.导入相关组件

import { ImageDrop } from 'quill-image-drop-module'
import ImageResize from 'quill-image-resize-module'
Quill.register('modules/imageDrop', ImageDrop)
Quill.register('modules/imageResize', ImageResize)

3.项目运行使用时，quill-image-resize-module插件报错imports如下：

image.png

解决方式：
找到项目的build/webpack.base.conf.js文件添加如下代码

const webpack = require('webpack')

plugins: [
   new webpack.ProvidePlugin({
       'window.Quill': 'quill/dist/quill.js',
       'Quill': 'quill/dist/quill.js'
 })
]

4.在editorOption添加如下代码

          history: {
              delay: 1000,
              maxStack: 50,
              userOnly: false
            },
            imageDrop: true,
            imageResize: {
              displayStyles: {
                backgroundColor: 'black',
                border: 'none',
                color: 'white'
              },
              modules: [ 'Resize', 'DisplaySize', 'Toolbar' ]
            }

完整的代码展示

<template>
  <div class="hello">
     <quill-editor v-model="content"
                      :options="editorOption"
                      @blur="onEditorBlur($event)"
                      @focus="onEditorFocus($event)"
                      @ready="onEditorReady($event)">
        </quill-editor>
    </div>
</template>

<script>
import 'quill/dist/quill.core.css'
import 'quill/dist/quill.snow.css'
import 'quill/dist/quill.bubble.css'
import Quill from 'quill'
import { quillEditor } from 'vue-quill-editor'
import { ImageDrop } from 'quill-image-drop-module'
import ImageResize from 'quill-image-resize-module'
Quill.register('modules/imageDrop', ImageDrop)
Quill.register('modules/imageResize', ImageResize)

//自定义字体类型
var fonts = [
  "SimSun",
  "SimHei",
  "Microsoft-YaHei",
  "KaiTi",
  "FangSong",
  "Arial",
  "Times-New-Roman",
  "sans-serif"
];
var Font = Quill.import("formats/font");
Font.whitelist = fonts; //将字体加入到白名单
Quill.register(Font, true);

export default {
  name: 'HelloWorld',
  components: {
    quillEditor
  },
  data () {
    return {
      contentCode:'',
      content: `<p><img src="http://t8.baidu.com/it/u=1484500186,1503043093&fm=79&app=86&size=h300&n=0&g=4n&f=jpeg?sec=1581398243&t=ccf50d7b4dd50dac437d46e368b66b20" width="500"></p>
         `,
     editorOption: {
        modules: {
          toolbar: [
            ['bold', 'italic', 'underline', 'strike', 'image'],
            ['formula', 'clean'],
            ['blockquote', 'code-block'],
            [{'list': 'ordered'}, {'list': 'bullet'}],
            [{'script': 'sub'}, {'script': 'super'}],
            [{'size': ['small', false, 'large', 'huge']}],
            [{ 'font': fonts }],
            [{'header': [1, 2, 3, 4, 5, 6, false]}],
            [{ 'color': [] }, { 'background': [] }],
            [{ 'align': [] }],
            [{'direction': 'rtl'}]
          ],
          history: {
              delay: 1000,
              maxStack: 50,
              userOnly: false
            },
            imageDrop: true,
            imageResize: {
              displayStyles: {
                backgroundColor: 'black',
                border: 'none',
                color: 'white'
              },
              modules: [ 'Resize', 'DisplaySize', 'Toolbar' ]
            }
        },
        placeholder: '输入内容........'
      }
    }
  },
  methods: {
    //vue-quill-editor
    onEditorBlur(quill) {
      // console.log("editor blur!", quill, this.content);
      //this.$emit("editorBlur", this.content);
      this.contentCode=this.content
    },
    onEditorFocus(quill) {
      this.contentCode=this.content
    },
    onEditorReady(quill) {
      // console.log("editor ready!", quill);
    },
    onEditorChange({ quill, html, text }) {
      // console.log("editor change!", quill, html, text);
      this.content = html;
    },
    onEditorChange(quill) {
      // console.log("编辑内容改变!", quill, this.content);
      //this.$emit("editorBlur", this.content);
    },
  },
  mounted() {
    //  console.log("this is current quill instance object", this.editor);
  }
}
</script>

<!-- Add "scoped" attribute to limit CSS to this component only -->
<style scoped lang='scss'>
</style>

参考文档：
https://blog.csdn.net/chanlingmai5374/article/details/88530706