With this vue component you can add a paintable canvas through every page

npm install vue-paintable

yarn add vue-paintable

import Vue from 'vue';
import Paintable from 'vue-paintable';

Vue.use(Paintable, {
  // optional methods
  setItem(key, image) {
    localStorage.setItem(key, image);
  },
  // you also can use async
  getItem(key) {
    return localStorage.getItem(key);
  },
  removeItem(key) {
    localStorage.removeItem(key);
  }
});
//...

<template>
  <paintable
    alwaysOnTop
    :active="isActive"
    :width="800"
    :height="800"
    :disableNavigation="disableNavigation"
    :hide="hidePaintable"
    :horizontalNavigation="true"
    :navigation="navigation"
    :name="isFirstPaintable ? 'my-screen' : 'my-second-screen'"
    :factor="1"
    :lineWidth="dynamicLineWidth"
    :lineWidthEraser="20"
    :useEraser="useEraser"
    :color="color"
    class="paint"
    ref="paintable"
    @toggle-paintable="toggledPaintable"
  >
    Your content
    <router-view></router-view>
  </paintable>
</template>

{
  'draw-save': {
    body: 'draw',
    activeBody: '<strong>save</strong>'
  },
  color: {
    body: 'CP'
  }
}

<paintable ref="paintable">content</paintable>

<button @click="$refs.paintable.undoDrawingStep">undo</button>
<button @click="$refs.paintable.redoDrawingStep">redo</button>
<button @click="$refs.paintable.clearCanvas">clear</button>
<button @click="$refs.paintable.saveCurrentCanvasToStorage">
  save
</button>
<button @click="$refs.paintable.cancelDrawing">cancel</button>

<paintable @toggle-paintable="toggledPaintable"></paintable>

<paintable :threshold="10" @thresholdReached="thresholdReached"></paintable>