Measurement annotation in Vue PDF Viewer control

24 Oct 202524 minutes to read

The PDF Viewer provides options to add measurement annotations. The supported measurement annotations are:

• Distance
• Perimeter
• Area
• Radius
• Volume

Adding measurement annotations to the PDF document

The measurement annotations can be added to the PDF document using the annotation toolbar.

• Click the Edit Annotation button in the PDF Viewer toolbar. A toolbar appears below it.
• Click the Measurement Annotation drop-down button. The pop-up lists available measurement annotation types.
• Select a measurement type to enable its annotation mode.
• Measure and add annotations on the pages of the PDF document.

When in pan mode, selecting a measurement annotation switches the PDF Viewer to text select mode.

The following example switches to distance annotation mode.

Composition API (Standalone)

<template>
  <div id="app">
    <button id="set">Distance</button>
    <ejs-pdfviewer id="pdfViewer" ref="pdfviewer" :documentPath="documentPath" :resourceUrl="resourceUrl"
      :documentLoad="documentLoad">
    </ejs-pdfviewer>
  </div>
</template>

<script setup>
import {
  PdfViewerComponent as EjsPdfviewer, Toolbar, Magnification, Navigation, LinkAnnotation,
  BookmarkView, Annotation, ThumbnailView, Print, TextSelection,
  TextSearch, FormFields, FormDesigner, PageOrganizer
} from '@syncfusion/ej2-vue-pdfviewer';
import { provide, ref } from 'vue';

const pdfviewer = ref(null);
const documentPath = "https://cdn.syncfusion.com/content/pdf/pdf-succinctly.pdf";
const resourceUrl = 'https://cdn.syncfusion.com/ej2/31.2.2/dist/ej2-pdfviewer-lib';

provide('PdfViewer', [Toolbar, Magnification, Navigation, LinkAnnotation, BookmarkView, ThumbnailView,
  Print, TextSelection, TextSearch, Annotation, FormFields, FormDesigner, PageOrganizer])

const documentLoad = () => {
  const viewer = pdfviewer.value.ej2Instances;
  document.getElementById('set').addEventListener('click', () => {
    viewer.annotation.setAnnotationMode('Distance');
  });
}
</script>

Options API (Standalone)

<template>
  <div id="app">
    <button id="set">Distance</button>
    <ejs-pdfviewer id="pdfViewer" ref="pdfviewer" :documentPath="documentPath" :resourceUrl="resourceUrl"
      :documentLoad="documentLoad">
    </ejs-pdfviewer>
  </div>
</template>

<script>
import {
  PdfViewerComponent, Toolbar, Magnification, Navigation, LinkAnnotation,
  BookmarkView, Annotation, ThumbnailView, Print, TextSelection,
  TextSearch, FormFields, FormDesigner, PageOrganizer
} from '@syncfusion/ej2-vue-pdfviewer';

export default {
  name: "App",
  components: {
    "ejs-pdfviewer": PdfViewerComponent
  },
  data() {
    return {
      documentPath: "https://cdn.syncfusion.com/content/pdf/pdf-succinctly.pdf",
      resourceUrl: 'https://cdn.syncfusion.com/ej2/31.2.2/dist/ej2-pdfviewer-lib',
    };
  },

  provide: {
    PdfViewer: [Toolbar, Magnification, Navigation, LinkAnnotation, BookmarkView, ThumbnailView,
      Print, TextSelection, TextSearch, Annotation, FormFields, FormDesigner, PageOrganizer]
  },
  methods: {
    documentLoad() {
      const viewer = this.$refs.pdfviewer.ej2Instances;
      document.getElementById('set').addEventListener('click', () => {
        viewer.annotation.setAnnotationMode('Distance');
      });
    }
  }
}
</script>

Composition API (Server-Backed)

<template>
  <div id="app">
    <button id="set">Distance</button>
    <ejs-pdfviewer id="pdfViewer" ref="pdfviewer" :serviceUrl="serviceUrl" :documentPath="documentPath"
      :documentLoad="documentLoad">
    </ejs-pdfviewer>
  </div>
</template>

<script setup>
import {
  PdfViewerComponent as EjsPdfviewer, Toolbar, Magnification, Navigation, LinkAnnotation,
  BookmarkView, Annotation, ThumbnailView, Print, TextSelection,
  TextSearch, FormFields, FormDesigner, PageOrganizer
} from '@syncfusion/ej2-vue-pdfviewer';
import { provide, ref } from 'vue';

const pdfviewer = ref(null);
const serviceUrl = "https://document.syncfusion.com/web-services/pdf-viewer/api/pdfviewer";
const documentPath = "https://cdn.syncfusion.com/content/pdf/pdf-succinctly.pdf";

provide('PdfViewer', [Toolbar, Magnification, Navigation, LinkAnnotation, BookmarkView, ThumbnailView,
  Print, TextSelection, TextSearch, Annotation, FormFields, FormDesigner, PageOrganizer])

const documentLoad = () => {
  const viewer = pdfviewer.value.ej2Instances;
  document.getElementById('set').addEventListener('click', () => {
    viewer.annotation.setAnnotationMode('Distance');
  });
}
</script>

Options API (Server-Backed)

<template>
  <div id="app">
    <button id="set">Distance</button>
    <ejs-pdfviewer id="pdfViewer" ref="pdfviewer" :serviceUrl="serviceUrl" :documentPath="documentPath"
      :documentLoad="documentLoad">
    </ejs-pdfviewer>
  </div>
</template>

<script>

import {
  PdfViewerComponent, Toolbar, Magnification, Navigation, LinkAnnotation,
  BookmarkView, Annotation, ThumbnailView, Print, TextSelection,
  TextSearch, FormFields, FormDesigner, PageOrganizer
} from '@syncfusion/ej2-vue-pdfviewer';

export default {
  name: "App",
  components: {
    "ejs-pdfviewer": PdfViewerComponent
  },
  data() {
    return {
      serviceUrl: "https://document.syncfusion.com/web-services/pdf-viewer/api/pdfviewer",
      documentPath: "https://cdn.syncfusion.com/content/pdf/pdf-succinctly.pdf"
    };
  },
  provide: {
    PdfViewer: [Toolbar, Magnification, Navigation, LinkAnnotation, BookmarkView, ThumbnailView,
      Print, TextSelection, TextSearch, Annotation, FormFields, FormDesigner, PageOrganizer]
  },
  methods: {
    documentLoad() {
      const viewer = this.$refs.pdfviewer.ej2Instances;
      document.getElementById('set').addEventListener('click', () => {
        viewer.annotation.setAnnotationMode('Distance');
      });
    }
  }
}
</script>

Add a measurement annotation to the PDF document programmatically

The PDF Viewer library allows adding measurement annotations programmatically using the addAnnotation() method.

Here is an example showing how to add measurement annotations programmatically using addAnnotation():

Composition API (Standalone)

<template>
  <div id="app">
    <button v-on:click="addDistanceAnnotation">Add Distance Annotation programatically</button>
    <button v-on:click="addPerimeterAnnotation">Add Perimeter Annotation programatically</button>
    <button v-on:click="addAreaAnnotation">Add Area Annotation programatically</button>
    <button v-on:click="addRadiusAnnotation">Add Radius Annotation programatically</button>
    <button v-on:click="addVolumeAnnotation">Add Volume Annotation programatically</button>
    <ejs-pdfviewer id="pdfViewer" ref="pdfviewer" :documentPath="documentPath" :resourceUrl="resourceUrl">
    </ejs-pdfviewer>
  </div>
</template>

<script setup>
import {
  PdfViewerComponent as EjsPdfviewer, Toolbar, Magnification, Navigation, LinkAnnotation,
  BookmarkView, Annotation, ThumbnailView, Print, TextSelection,
  TextSearch, FormFields, FormDesigner, PageOrganizer
} from '@syncfusion/ej2-vue-pdfviewer';
import { provide, ref } from 'vue';

const pdfviewer = ref(null);
const documentPath = "https://cdn.syncfusion.com/content/pdf/pdf-succinctly.pdf";
const resourceUrl = 'https://cdn.syncfusion.com/ej2/31.2.2/dist/ej2-pdfviewer-lib';

provide('PdfViewer', [Toolbar, Magnification, Navigation, LinkAnnotation, BookmarkView, Annotation,
  ThumbnailView, Print, TextSelection, TextSearch, FormFields, FormDesigner, PageOrganizer])

const addDistanceAnnotation = function () {
  pdfviewer.value.ej2Instances.annotation.addAnnotation("Distance", {
    offset: { x: 200, y: 230 },
    pageNumber: 1,
    vertexPoints: [{ x: 200, y: 230 }, { x: 350, y: 230 }]
  });
}

const addPerimeterAnnotation = function () {
  pdfviewer.value.ej2Instances.annotation.addAnnotation("Perimeter", {
    offset: { x: 200, y: 350 },
    pageNumber: 1,
    vertexPoints: [{ x: 200, y: 350 }, { x: 285, y: 350 }, { x: 286, y: 412 }]
  });
}

const addAreaAnnotation = function () {
  pdfviewer.value.ej2Instances.annotation.addAnnotation("Area", {
    offset: { x: 200, y: 500 },
    pageNumber: 1,
    vertexPoints: [{ x: 200, y: 500 }, { x: 288, y: 499 }, { x: 289, y: 553 }, { x: 200, y: 500 }]
  });
}

const addRadiusAnnotation = function () {
  pdfviewer.value.ej2Instances.annotation.addAnnotation("Radius", {
    offset: { x: 200, y: 630 },
    pageNumber: 1,
    width: 90,
    height: 90
  });
}

const addVolumeAnnotation = function () {
  pdfviewer.value.ej2Instances.annotation.addAnnotation("Volume", {
    offset: { x: 200, y: 810 },
    pageNumber: 1,
    vertexPoints: [{ x: 200, y: 810 }, { x: 200, y: 919 }, { x: 320, y: 919 }, { x: 320, y: 809 }, { x: 200, y: 810 }]
  });
}
</script>

Options API (Standalone)

<template>
  <div id="app">
    <button v-on:click="addDistanceAnnotation">Add Distance Annotation programatically</button>
    <button v-on:click="addPerimeterAnnotation">Add Perimeter Annotation programatically</button>
    <button v-on:click="addAreaAnnotation">Add Area Annotation programatically</button>
    <button v-on:click="addRadiusAnnotation">Add Radius Annotation programatically</button>
    <button v-on:click="addVolumeAnnotation">Add Volume Annotation programatically</button>
    <ejs-pdfviewer id="pdfViewer" ref="pdfviewer" :documentPath="documentPath" :resourceUrl="resourceUrl">
    </ejs-pdfviewer>
  </div>
</template>

<script>
import {
  PdfViewerComponent, Toolbar, Magnification, Navigation, LinkAnnotation,
  BookmarkView, Annotation, ThumbnailView, Print, TextSelection,
  TextSearch, FormFields, FormDesigner, PageOrganizer
} from '@syncfusion/ej2-vue-pdfviewer';


export default {
  name: "App",
  components: {
    "ejs-pdfviewer": PdfViewerComponent
  },
  data() {
    return {
      documentPath: "https://cdn.syncfusion.com/content/pdf/pdf-succinctly.pdf",
      resourceUrl: 'https://cdn.syncfusion.com/ej2/31.2.2/dist/ej2-pdfviewer-lib',
    };
  },
  provide: {
    PdfViewer: [Toolbar, Magnification, Navigation, LinkAnnotation, BookmarkView, Annotation,
      ThumbnailView, Print, TextSelection, TextSearch, FormFields, FormDesigner, PageOrganizer]
  },
  methods: {
    addDistanceAnnotation: function () {
      this.$refs.pdfviewer.ej2Instances.annotation.addAnnotation("Distance", {
        offset: { x: 200, y: 230 },
        pageNumber: 1,
        vertexPoints: [{ x: 200, y: 230 }, { x: 350, y: 230 }]
      });
    },
    addPerimeterAnnotation: function () {
      this.$refs.pdfviewer.ej2Instances.annotation.addAnnotation("Perimeter", {
        offset: { x: 200, y: 350 },
        pageNumber: 1,
        vertexPoints: [{ x: 200, y: 350 }, { x: 285, y: 350 }, { x: 286, y: 412 }]
      });
    },
    addAreaAnnotation: function () {
      this.$refs.pdfviewer.ej2Instances.annotation.addAnnotation("Area", {
        offset: { x: 200, y: 500 },
        pageNumber: 1,
        vertexPoints: [{ x: 200, y: 500 }, { x: 288, y: 499 }, { x: 289, y: 553 }, { x: 200, y: 500 }]
      });
    },
    addRadiusAnnotation: function () {
      this.$refs.pdfviewer.ej2Instances.annotation.addAnnotation("Radius", {
        offset: { x: 200, y: 630 },
        pageNumber: 1,
        width: 90,
        height: 90
      });
    },
    addVolumeAnnotation: function () {
      this.$refs.pdfviewer.ej2Instances.annotation.addAnnotation("Volume", {
        offset: { x: 200, y: 810 },
        pageNumber: 1,
        vertexPoints: [{ x: 200, y: 810 }, { x: 200, y: 919 }, { x: 320, y: 919 }, { x: 320, y: 809 }, { x: 200, y: 810 }]
      });
    }
  }
}
</script>

Composition API (Server-Backed)

<template>
  <div id="app">
    <button v-on:click="addDistanceAnnotation">Add Distance Annotation programatically</button>
    <button v-on:click="addPerimeterAnnotation">Add Perimeter Annotation programatically</button>
    <button v-on:click="addAreaAnnotation">Add Area Annotation programatically</button>
    <button v-on:click="addRadiusAnnotation">Add Radius Annotation programatically</button>
    <button v-on:click="addVolumeAnnotation">Add Volume Annotation programatically</button>
    <ejs-pdfviewer id="pdfViewer" ref="pdfviewer" :documentPath="documentPath" :serviceUrl="serviceUrl">
    </ejs-pdfviewer>
  </div>
</template>

<script setup>
import {
  PdfViewerComponent as EjsPdfviewer, Toolbar, Magnification, Navigation, LinkAnnotation,
  BookmarkView, Annotation, ThumbnailView, Print, TextSelection,
  TextSearch, FormFields, FormDesigner, PageOrganizer
} from '@syncfusion/ej2-vue-pdfviewer';
import { provide, ref } from 'vue';

const pdfviewer = ref(null);
const documentPath = "https://cdn.syncfusion.com/content/pdf/pdf-succinctly.pdf";
const serviceUrl = "https://document.syncfusion.com/web-services/pdf-viewer/api/pdfviewer";

provide('PdfViewer', [Toolbar, Magnification, Navigation, LinkAnnotation, BookmarkView, Annotation,
  ThumbnailView, Print, TextSelection, TextSearch, FormFields, FormDesigner, PageOrganizer])

const addDistanceAnnotation = function () {
  pdfviewer.value.ej2Instances.annotation.addAnnotation("Distance", {
    offset: { x: 200, y: 230 },
    pageNumber: 1,
    vertexPoints: [{ x: 200, y: 230 }, { x: 350, y: 230 }]
  });
}

const addPerimeterAnnotation = function () {
  pdfviewer.value.ej2Instances.annotation.addAnnotation("Perimeter", {
    offset: { x: 200, y: 350 },
    pageNumber: 1,
    vertexPoints: [{ x: 200, y: 350 }, { x: 285, y: 350 }, { x: 286, y: 412 }]
  });
}

const addAreaAnnotation = function () {
  pdfviewer.value.ej2Instances.annotation.addAnnotation("Area", {
    offset: { x: 200, y: 500 },
    pageNumber: 1,
    vertexPoints: [{ x: 200, y: 500 }, { x: 288, y: 499 }, { x: 289, y: 553 }, { x: 200, y: 500 }]
  });
}

const addRadiusAnnotation = function () {
  pdfviewer.value.ej2Instances.annotation.addAnnotation("Radius", {
    offset: { x: 200, y: 630 },
    pageNumber: 1,
    width: 90,
    height: 90
  });
}

const addVolumeAnnotation = function () {
  pdfviewer.value.ej2Instances.annotation.addAnnotation("Volume", {
    offset: { x: 200, y: 810 },
    pageNumber: 1,
    vertexPoints: [{ x: 200, y: 810 }, { x: 200, y: 919 }, { x: 320, y: 919 }, { x: 320, y: 809 }, { x: 200, y: 810 }]
  });
}
</script>

Options API (Server-Backed)

<template>
  <div id="app">
    <button v-on:click="addDistanceAnnotation">Add Distance Annotation programatically</button>
    <button v-on:click="addPerimeterAnnotation">Add Perimeter Annotation programatically</button>
    <button v-on:click="addAreaAnnotation">Add Area Annotation programatically</button>
    <button v-on:click="addRadiusAnnotation">Add Radius Annotation programatically</button>
    <button v-on:click="addVolumeAnnotation">Add Volume Annotation programatically</button>
    <ejs-pdfviewer id="pdfViewer" ref="pdfviewer" :documentPath="documentPath" :serviceUrl="serviceUrl">
    </ejs-pdfviewer>
  </div>
</template>

<script>
import {
  PdfViewerComponent, Toolbar, Magnification, Navigation, LinkAnnotation,
  BookmarkView, Annotation, ThumbnailView, Print, TextSelection,
  TextSearch, FormFields, FormDesigner, PageOrganizer
} from '@syncfusion/ej2-vue-pdfviewer';

export default {
  name: "App",
  components: {
    "ejs-pdfviewer": PdfViewerComponent
  },
  data() {
    return {
      documentPath: "https://cdn.syncfusion.com/content/pdf/pdf-succinctly.pdf",
      serviceUrl: "https://document.syncfusion.com/web-services/pdf-viewer/api/pdfviewer",
    };
  },
  provide: {
    PdfViewer: [Toolbar, Magnification, Navigation, LinkAnnotation, BookmarkView, Annotation,
      ThumbnailView, Print, TextSelection, TextSearch, FormFields, FormDesigner, PageOrganizer]
  },
  methods: {
    addDistanceAnnotation: function () {
      this.$refs.pdfviewer.ej2Instances.annotation.addAnnotation("Distance", {
        offset: { x: 200, y: 230 },
        pageNumber: 1,
        vertexPoints: [{ x: 200, y: 230 }, { x: 350, y: 230 }]
      });
    },
    addPerimeterAnnotation: function () {
      this.$refs.pdfviewer.ej2Instances.annotation.addAnnotation("Perimeter", {
        offset: { x: 200, y: 350 },
        pageNumber: 1,
        vertexPoints: [{ x: 200, y: 350 }, { x: 285, y: 350 }, { x: 286, y: 412 }]
      });
    },
    addAreaAnnotation: function () {
      this.$refs.pdfviewer.ej2Instances.annotation.addAnnotation("Area", {
        offset: { x: 200, y: 500 },
        pageNumber: 1,
        vertexPoints: [{ x: 200, y: 500 }, { x: 288, y: 499 }, { x: 289, y: 553 }, { x: 200, y: 500 }]
      });
    },
    addRadiusAnnotation: function () {
      this.$refs.pdfviewer.ej2Instances.annotation.addAnnotation("Radius", {
        offset: { x: 200, y: 630 },
        pageNumber: 1,
        width: 90,
        height: 90
      });
    },
    addVolumeAnnotation: function () {
      this.$refs.pdfviewer.ej2Instances.annotation.addAnnotation("Volume", {
        offset: { x: 200, y: 810 },
        pageNumber: 1,
        vertexPoints: [{ x: 200, y: 810 }, { x: 200, y: 919 }, { x: 320, y: 919 }, { x: 320, y: 809 }, { x: 200, y: 810 }]
      });
    }
  }
}
</script>

Edit an existing measurement annotation programmatically

To modify an existing measurement annotation programmatically, use the editAnnotation() method.

Here is an example of using editAnnotation():

Composition API (Standalone)

<template>
  <div id="app">
    <button v-on:click="editDistanceAnnotation">Edit Distance Annotation programatically</button>
    <button v-on:click="editPerimeterAnnotation">Edit Perimeter Annotation programatically</button>
    <button v-on:click="editAreaAnnotation">Edit Area Annotation programatically</button>
    <button v-on:click="editRadiusAnnotation">Edit Radius Annotation programatically</button>
    <button v-on:click="editVolumeAnnotation">Edit Volume Annotation programatically</button>
    <ejs-pdfviewer id="pdfViewer" ref="pdfviewer" :documentPath="documentPath" :resourceUrl="resourceUrl">
    </ejs-pdfviewer>
  </div>
</template>

<script setup>
import {
  PdfViewerComponent as EjsPdfviewer, Toolbar, Magnification, Navigation, LinkAnnotation,
  BookmarkView, Annotation, ThumbnailView, Print, TextSelection,
  TextSearch, FormFields, FormDesigner, PageOrganizer
} from '@syncfusion/ej2-vue-pdfviewer';
import { provide, ref } from 'vue';

const pdfviewer = ref(null);
const documentPath = "https://cdn.syncfusion.com/content/pdf/pdf-succinctly.pdf";
const resourceUrl = 'https://cdn.syncfusion.com/ej2/31.2.2/dist/ej2-pdfviewer-lib';

provide('PdfViewer', [Toolbar, Magnification, Navigation, LinkAnnotation, BookmarkView, Annotation,
  ThumbnailView, Print, TextSelection, TextSearch, FormFields, FormDesigner, PageOrganizer]);

const editDistanceAnnotation = function () {
  const viewer = pdfviewer.value.ej2Instances;
  for (let i = 0; i < viewer.annotationCollection.length; i++) {
    if (viewer.annotationCollection[i].subject === "Distance calculation") {
      viewer.annotationCollection[i].annotationSelectorSettings.resizerShape = "Circle"
      viewer.annotationCollection[i].strokeColor = "#0000FF";
      viewer.annotationCollection[i].thickness = 2;
      viewer.annotationCollection[i].fillColor = "#FFFF00";
      viewer.annotation.editAnnotation(viewer.annotationCollection[i]);
    }
  }
}
const editPerimeterAnnotation = function () {
  const viewer = pdfviewer.value.ej2Instances;
  for (let i = 0; i < viewer.annotationCollection.length; i++) {
    if (viewer.annotationCollection[i].subject === "Perimeter calculation") {
      viewer.annotationCollection[i].annotationSelectorSettings.resizerShape = "Circle"
      viewer.annotationCollection[i].strokeColor = "#0000FF";
      viewer.annotationCollection[i].thickness = 2;
      viewer.annotationCollection[i].fillColor = "#FFFF00";
      viewer.annotation.editAnnotation(viewer.annotationCollection[i]);
    }
  }
}
const editAreaAnnotation = function () {
  const viewer = pdfviewer.value.ej2Instances;
  for (let i = 0; i < viewer.annotationCollection.length; i++) {
    if (viewer.annotationCollection[i].subject === "Area calculation") {
      viewer.annotationCollection[i].annotationSelectorSettings.resizerShape = "Circle"
      viewer.annotationCollection[i].strokeColor = "#0000FF";
      viewer.annotationCollection[i].thickness = 2;
      viewer.annotationCollection[i].fillColor = "#FFFF00";
      viewer.annotation.editAnnotation(viewer.annotationCollection[i]);
    }
  }
}
const editRadiusAnnotation = function () {
  const viewer = pdfviewer.value.ej2Instances;
  for (let i = 0; i < viewer.annotationCollection.length; i++) {
    if (viewer.annotationCollection[i].subject === "Radius calculation") {
      viewer.annotationCollection[i].annotationSelectorSettings.resizerShape = "Circle"
      viewer.annotationCollection[i].strokeColor = "#0000FF";
      viewer.annotationCollection[i].thickness = 2;
      viewer.annotationCollection[i].fillColor = "#FFFF00";
      viewer.annotation.editAnnotation(viewer.annotationCollection[i]);
    }
  }
}
const editVolumeAnnotation = function () {
  const viewer = pdfviewer.value.ej2Instances;
  for (let i = 0; i < viewer.annotationCollection.length; i++) {
    if (viewer.annotationCollection[i].subject === "Volume calculation") {
      viewer.annotationCollection[i].annotationSelectorSettings.resizerShape = "Circle"
      viewer.annotationCollection[i].strokeColor = "#0000FF";
      viewer.annotationCollection[i].thickness = 2;
      viewer.annotationCollection[i].fillColor = "#FFFF00";
      viewer.annotation.editAnnotation(viewer.annotationCollection[i]);
    }
  }
}
</script>

Options API (Standalone)

<template>
  <div id="app">
    <button v-on:click="editDistanceAnnotation">Edit Distance Annotation programatically</button>
    <button v-on:click="editPerimeterAnnotation">Edit Perimeter Annotation programatically</button>
    <button v-on:click="editAreaAnnotation">Edit Area Annotation programatically</button>
    <button v-on:click="editRadiusAnnotation">Edit Radius Annotation programatically</button>
    <button v-on:click="editVolumeAnnotation">Edit Volume Annotation programatically</button>
    <ejs-pdfviewer id="pdfViewer" ref="pdfviewer" :documentPath="documentPath" :resourceUrl="resourceUrl">
    </ejs-pdfviewer>
  </div>
</template>

<script>
import {
  PdfViewerComponent, Toolbar, Magnification, Navigation, LinkAnnotation,
  BookmarkView, Annotation, ThumbnailView, Print, TextSelection,
  TextSearch, FormFields, FormDesigner, PageOrganizer
} from '@syncfusion/ej2-vue-pdfviewer';

export default {
  name: "App",
  components: {
    "ejs-pdfviewer": PdfViewerComponent
  },
  data() {
    return {
      documentPath: "https://cdn.syncfusion.com/content/pdf/pdf-succinctly.pdf",
      resourceUrl: 'https://cdn.syncfusion.com/ej2/31.2.2/dist/ej2-pdfviewer-lib',
    };
  },
  provide: {
    PdfViewer: [Toolbar, Magnification, Navigation, LinkAnnotation, BookmarkView, Annotation,
      ThumbnailView, Print, TextSelection, TextSearch, FormFields, FormDesigner, PageOrganizer]
  },
  methods: {
    editDistanceAnnotation: function () {
      const viewer = this.$refs.pdfviewer.ej2Instances;
      for (let i = 0; i < viewer.annotationCollection.length; i++) {
        if (viewer.annotationCollection[i].subject === "Distance calculation") {
          viewer.annotationCollection[i].annotationSelectorSettings.resizerShape = "Circle"
          viewer.annotationCollection[i].strokeColor = "#0000FF";
          viewer.annotationCollection[i].thickness = 2;
          viewer.annotationCollection[i].fillColor = "#FFFF00";
          viewer.annotation.editAnnotation(viewer.annotationCollection[i]);
        }
      }
    },
    editPerimeterAnnotation: function () {
      const viewer = this.$refs.pdfviewer.ej2Instances;
      for (let i = 0; i < viewer.annotationCollection.length; i++) {
        if (viewer.annotationCollection[i].subject === "Perimeter calculation") {
          viewer.annotationCollection[i].annotationSelectorSettings.resizerShape = "Circle"
          viewer.annotationCollection[i].strokeColor = "#0000FF";
          viewer.annotationCollection[i].thickness = 2;
          viewer.annotationCollection[i].fillColor = "#FFFF00";
          viewer.annotation.editAnnotation(viewer.annotationCollection[i]);
        }
      }
    },
    editAreaAnnotation: function () {
      const viewer = this.$refs.pdfviewer.ej2Instances;
      for (let i = 0; i < viewer.annotationCollection.length; i++) {
        if (viewer.annotationCollection[i].subject === "Area calculation") {
          viewer.annotationCollection[i].annotationSelectorSettings.resizerShape = "Circle"
          viewer.annotationCollection[i].strokeColor = "#0000FF";
          viewer.annotationCollection[i].thickness = 2;
          viewer.annotationCollection[i].fillColor = "#FFFF00";
          viewer.annotation.editAnnotation(viewer.annotationCollection[i]);
        }
      }
    },
    editRadiusAnnotation: function () {
      const viewer = this.$refs.pdfviewer.ej2Instances;
      for (let i = 0; i < viewer.annotationCollection.length; i++) {
        if (viewer.annotationCollection[i].subject === "Radius calculation") {
          viewer.annotationCollection[i].annotationSelectorSettings.resizerShape = "Circle"
          viewer.annotationCollection[i].strokeColor = "#0000FF";
          viewer.annotationCollection[i].thickness = 2;
          viewer.annotationCollection[i].fillColor = "#FFFF00";
          viewer.annotation.editAnnotation(viewer.annotationCollection[i]);
        }
      }
    },
    editVolumeAnnotation: function () {
      const viewer = this.$refs.pdfviewer.ej2Instances;
      for (let i = 0; i < viewer.annotationCollection.length; i++) {
        if (viewer.annotationCollection[i].subject === "Volume calculation") {
          viewer.annotationCollection[i].annotationSelectorSettings.resizerShape = "Circle"
          viewer.annotationCollection[i].strokeColor = "#0000FF";
          viewer.annotationCollection[i].thickness = 2;
          viewer.annotationCollection[i].fillColor = "#FFFF00";
          viewer.annotation.editAnnotation(viewer.annotationCollection[i]);
        }
      }
    }
  }
}
</script>

Composition API (Server-Backed)

<template>
  <div id="app">
    <button v-on:click="editDistanceAnnotation">Edit Distance Annotation programatically</button>
    <button v-on:click="editPerimeterAnnotation">Edit Perimeter Annotation programatically</button>
    <button v-on:click="editAreaAnnotation">Edit Area Annotation programatically</button>
    <button v-on:click="editRadiusAnnotation">Edit Radius Annotation programatically</button>
    <button v-on:click="editVolumeAnnotation">Edit Volume Annotation programatically</button>
    <ejs-pdfviewer id="pdfViewer" ref="pdfviewer" :documentPath="documentPath" :serviceUrl="serviceUrl">
    </ejs-pdfviewer>
  </div>
</template>

<script setup>
import {
  PdfViewerComponent as EjsPdfviewer, Toolbar, Magnification, Navigation, LinkAnnotation,
  BookmarkView, Annotation, ThumbnailView, Print, TextSelection,
  TextSearch, FormFields, FormDesigner, PageOrganizer
} from '@syncfusion/ej2-vue-pdfviewer';
import { provide, ref } from 'vue';

const pdfviewer = ref(null);
const documentPath = "https://cdn.syncfusion.com/content/pdf/pdf-succinctly.pdf";
const serviceUrl = "https://document.syncfusion.com/web-services/pdf-viewer/api/pdfviewer";

provide('PdfViewer', [Toolbar, Magnification, Navigation, LinkAnnotation, BookmarkView, Annotation,
  ThumbnailView, Print, TextSelection, TextSearch, FormFields, FormDesigner, PageOrganizer])

const editDistanceAnnotation = function () {
  const viewer = pdfviewer.value.ej2Instances;
  for (let i = 0; i < viewer.annotationCollection.length; i++) {
    if (viewer.annotationCollection[i].subject === "Distance calculation") {
      viewer.annotationCollection[i].annotationSelectorSettings.resizerShape = "Circle"
      viewer.annotationCollection[i].strokeColor = "#0000FF";
      viewer.annotationCollection[i].thickness = 2;
      viewer.annotationCollection[i].fillColor = "#FFFF00";
      viewer.annotation.editAnnotation(viewer.annotationCollection[i]);
    }
  }
}

const editPerimeterAnnotation = function () {
  const viewer = pdfviewer.value.ej2Instances;
  for (let i = 0; i < viewer.annotationCollection.length; i++) {
    if (viewer.annotationCollection[i].subject === "Perimeter calculation") {
      viewer.annotationCollection[i].annotationSelectorSettings.resizerShape = "Circle"
      viewer.annotationCollection[i].strokeColor = "#0000FF";
      viewer.annotationCollection[i].thickness = 2;
      viewer.annotationCollection[i].fillColor = "#FFFF00";
      viewer.annotation.editAnnotation(viewer.annotationCollection[i]);
    }
  }
}

const editAreaAnnotation = function () {
  const viewer = pdfviewer.value.ej2Instances;
  for (let i = 0; i < viewer.annotationCollection.length; i++) {
    if (viewer.annotationCollection[i].subject === "Area calculation") {
      viewer.annotationCollection[i].annotationSelectorSettings.resizerShape = "Circle"
      viewer.annotationCollection[i].strokeColor = "#0000FF";
      viewer.annotationCollection[i].thickness = 2;
      viewer.annotationCollection[i].fillColor = "#FFFF00";
      viewer.annotation.editAnnotation(viewer.annotationCollection[i]);
    }
  }
}

const editRadiusAnnotation = function () {
  const viewer = pdfviewer.value.ej2Instances;
  for (let i = 0; i < viewer.annotationCollection.length; i++) {
    if (viewer.annotationCollection[i].subject === "Radius calculation") {
      viewer.annotationCollection[i].annotationSelectorSettings.resizerShape = "Circle"
      viewer.annotationCollection[i].strokeColor = "#0000FF";
      viewer.annotationCollection[i].thickness = 2;
      viewer.annotationCollection[i].fillColor = "#FFFF00";
      viewer.annotation.editAnnotation(viewer.annotationCollection[i]);
    }
  }
}

const editVolumeAnnotation = function () {
  const viewer = pdfviewer.value.ej2Instances;
  for (let i = 0; i < viewer.annotationCollection.length; i++) {
    if (viewer.annotationCollection[i].subject === "Volume calculation") {
      viewer.annotationCollection[i].annotationSelectorSettings.resizerShape = "Circle"
      viewer.annotationCollection[i].strokeColor = "#0000FF";
      viewer.annotationCollection[i].thickness = 2;
      viewer.annotationCollection[i].fillColor = "#FFFF00";
      viewer.annotation.editAnnotation(viewer.annotationCollection[i]);
    }
  }
}
</script>

Options API (Server-Backed)

<template>
  <div id="app">
    <button v-on:click="editDistanceAnnotation">Edit Distance Annotation programatically</button>
    <button v-on:click="editPerimeterAnnotation">Edit Perimeter Annotation programatically</button>
    <button v-on:click="editAreaAnnotation">Edit Area Annotation programatically</button>
    <button v-on:click="editRadiusAnnotation">Edit Radius Annotation programatically</button>
    <button v-on:click="editVolumeAnnotation">Edit Volume Annotation programatically</button>
    <ejs-pdfviewer id="pdfViewer" ref="pdfviewer" :documentPath="documentPath" :serviceUrl="serviceUrl">
    </ejs-pdfviewer>
  </div>
</template>

<script>
import {
  PdfViewerComponent, Toolbar, Magnification, Navigation, LinkAnnotation,
  BookmarkView, Annotation, ThumbnailView, Print, TextSelection,
  TextSearch, FormFields, FormDesigner, PageOrganizer
} from '@syncfusion/ej2-vue-pdfviewer';

export default {
  name: "App",
  components: {
    "ejs-pdfviewer": PdfViewerComponent
  },
  data() {
    return {
      documentPath: "https://cdn.syncfusion.com/content/pdf/pdf-succinctly.pdf",
      serviceUrl: "https://document.syncfusion.com/web-services/pdf-viewer/api/pdfviewer",
    };
  },
  provide: {
    PdfViewer: [Toolbar, Magnification, Navigation, LinkAnnotation, BookmarkView, Annotation,
      ThumbnailView, Print, TextSelection, TextSearch, FormFields, FormDesigner, PageOrganizer]
  },
  methods: {
    editDistanceAnnotation: function () {
      const viewer = this.$refs.pdfviewer.ej2Instances;
      for (let i = 0; i < viewer.annotationCollection.length; i++) {
        if (viewer.annotationCollection[i].subject === "Distance calculation") {
          viewer.annotationCollection[i].annotationSelectorSettings.resizerShape = "Circle"
          viewer.annotationCollection[i].strokeColor = "#0000FF";
          viewer.annotationCollection[i].thickness = 2;
          viewer.annotationCollection[i].fillColor = "#FFFF00";
          viewer.annotation.editAnnotation(viewer.annotationCollection[i]);
        }
      }
    },
    editPerimeterAnnotation: function () {
      const viewer = this.$refs.pdfviewer.ej2Instances;
      for (let i = 0; i < viewer.annotationCollection.length; i++) {
        if (viewer.annotationCollection[i].subject === "Perimeter calculation") {
          viewer.annotationCollection[i].annotationSelectorSettings.resizerShape = "Circle"
          viewer.annotationCollection[i].strokeColor = "#0000FF";
          viewer.annotationCollection[i].thickness = 2;
          viewer.annotationCollection[i].fillColor = "#FFFF00";
          viewer.annotation.editAnnotation(viewer.annotationCollection[i]);
        }
      }
    },
    editAreaAnnotation: function () {
      const viewer = this.$refs.pdfviewer.ej2Instances;
      for (let i = 0; i < viewer.annotationCollection.length; i++) {
        if (viewer.annotationCollection[i].subject === "Area calculation") {
          viewer.annotationCollection[i].annotationSelectorSettings.resizerShape = "Circle"
          viewer.annotationCollection[i].strokeColor = "#0000FF";
          viewer.annotationCollection[i].thickness = 2;
          viewer.annotationCollection[i].fillColor = "#FFFF00";
          viewer.annotation.editAnnotation(viewer.annotationCollection[i]);
        }
      }
    },
    editRadiusAnnotation: function () {
      const viewer = this.$refs.pdfviewer.ej2Instances;
      for (let i = 0; i < viewer.annotationCollection.length; i++) {
        if (viewer.annotationCollection[i].subject === "Radius calculation") {
          viewer.annotationCollection[i].annotationSelectorSettings.resizerShape = "Circle"
          viewer.annotationCollection[i].strokeColor = "#0000FF";
          viewer.annotationCollection[i].thickness = 2;
          viewer.annotationCollection[i].fillColor = "#FFFF00";
          viewer.annotation.editAnnotation(viewer.annotationCollection[i]);
        }
      }
    },
    editVolumeAnnotation: function () {
      const viewer = this.$refs.pdfviewer.ej2Instances;
      for (let i = 0; i < viewer.annotationCollection.length; i++) {
        if (viewer.annotationCollection[i].subject === "Volume calculation") {
          viewer.annotationCollection[i].annotationSelectorSettings.resizerShape = "Circle"
          viewer.annotationCollection[i].strokeColor = "#0000FF";
          viewer.annotationCollection[i].thickness = 2;
          viewer.annotationCollection[i].fillColor = "#FFFF00";
          viewer.annotation.editAnnotation(viewer.annotationCollection[i]);
        }
      }
    }
  }
}
</script>

Edit the properties of measurement annotations

The fill color, stroke color, thickness, and opacity can be edited using the Edit Color, Edit Stroke Color, Edit Thickness, and Edit Opacity tools in the annotation toolbar.

Edit fill color

The fill color of the annotation can be edited using the color palette provided in the Edit Color tool.

Edit stroke color

The stroke color of the annotation can be edited using the color palette provided in the Edit Stroke Color tool.

Edit thickness

Edit border thickness using the range slider provided in the Edit Thickness tool.

Edit opacity

The opacity of the annotation can be edited using the range slider provided in the Edit Opacity tool.

Edit the line properties

Line-based measurement annotations (distance and perimeter) have additional options in the Line Properties window. Open it by right-clicking the annotation and selecting Properties from the context menu.

Set default properties during control initialization

Default properties for measurement annotations can be set before creating the control using distanceSettings, perimeterSettings, areaSettings, radiusSettings, and volumeSettings.

Composition API (Standalone)

<template>
  <div id="app">
    <ejs-pdfviewer id="pdfViewer" ref="pdfviewer" :resourceUrl="resourceUrl" :documentPath="documentPath"
      :distanceSettings="distanceSettings" :perimeterSettings="perimeterSettings" :areaSettings="areaSettings"
      :radiusSettings="radiusSettings" :volumeSettings="volumeSettings">
    </ejs-pdfviewer>
  </div>
</template>

<script setup>
import {
  PdfViewerComponent as EjsPdfviewer, Toolbar, Magnification, Navigation, LinkAnnotation,
  BookmarkView, Annotation, ThumbnailView, Print, TextSelection,
  TextSearch, FormFields, FormDesigner, PageOrganizer
} from '@syncfusion/ej2-vue-pdfviewer';
import { provide } from 'vue';

const documentPath = "https://cdn.syncfusion.com/content/pdf/pdf-succinctly.pdf";
const resourceUrl = 'https://cdn.syncfusion.com/ej2/31.2.2/dist/ej2-pdfviewer-lib';
const distanceSettings = { fillColor: 'blue', opacity: 0.6, strokeColor: 'green' };
const perimeterSettings = { fillColor: 'green', opacity: 0.6, strokeColor: 'blue' };
const areaSettings = { fillColor: 'yellow', opacity: 0.6, strokeColor: 'orange' };
const radiusSettings = { fillColor: 'orange', opacity: 0.6, strokeColor: 'pink' };
const volumeSettings = { fillColor: 'pink', opacity: 0.6, strokeColor: 'yellow' };

provide('PdfViewer', [Toolbar, Magnification, Navigation, LinkAnnotation, BookmarkView, ThumbnailView,
  Print, TextSelection, TextSearch, Annotation, FormFields, FormDesigner, PageOrganizer])

</script>

Options API (Standalone)

<template>
  <div id="app">
    <ejs-pdfviewer id="pdfViewer" ref="pdfviewer" :resourceUrl="resourceUrl" :documentPath="documentPath"
      :distanceSettings="distanceSettings" :perimeterSettings="perimeterSettings" :areaSettings="areaSettings"
      :radiusSettings="radiusSettings" :volumeSettings="volumeSettings">
    </ejs-pdfviewer>
  </div>
</template>

<script>
import {
  PdfViewerComponent, Toolbar, Magnification, Navigation, LinkAnnotation,
  BookmarkView, Annotation, ThumbnailView, Print, TextSelection,
  TextSearch, FormFields, FormDesigner, PageOrganizer
} from '@syncfusion/ej2-vue-pdfviewer';

export default {
  name: "App",
  components: {
    "ejs-pdfviewer": PdfViewerComponent
  },
  data() {
    return {
      documentPath: "https://cdn.syncfusion.com/content/pdf/pdf-succinctly.pdf",
      resourceUrl: 'https://cdn.syncfusion.com/ej2/31.2.2/dist/ej2-pdfviewer-lib',
      distanceSettings: { fillColor: 'blue', opacity: 0.6, strokeColor: 'green' },
      perimeterSettings: { fillColor: 'green', opacity: 0.6, strokeColor: 'blue' },
      areaSettings: { fillColor: 'yellow', opacity: 0.6, strokeColor: 'orange' },
      radiusSettings: { fillColor: 'orange', opacity: 0.6, strokeColor: 'pink' },
      volumeSettings: { fillColor: 'pink', opacity: 0.6, strokeColor: 'yellow' }
    };
  },
  provide: {
    PdfViewer: [Toolbar, Magnification, Navigation, LinkAnnotation, BookmarkView, ThumbnailView,
      Print, TextSelection, TextSearch, Annotation, FormFields, FormDesigner, PageOrganizer]
  }
}
</script>

Composition API (Server-Backed)

<template>
  <div id="app">
    <ejs-pdfviewer id="pdfViewer" ref="pdfviewer" :serviceUrl="serviceUrl" :documentPath="documentPath"
      :distanceSettings="distanceSettings" :perimeterSettings="perimeterSettings" :areaSettings="areaSettings"
      :radiusSettings="radiusSettings" :volumeSettings="volumeSettings">
    </ejs-pdfviewer>
  </div>
</template>

<script setup>
import {
  PdfViewerComponent as EjsPdfviewer, Toolbar, Magnification, Navigation, LinkAnnotation,
  BookmarkView, Annotation, ThumbnailView, Print, TextSelection,
  TextSearch, FormFields, FormDesigner, PageOrganizer
} from '@syncfusion/ej2-vue-pdfviewer';
import { provide } from 'vue';

const serviceUrl = "https://document.syncfusion.com/web-services/pdf-viewer/api/pdfviewer";
const documentPath = "https://cdn.syncfusion.com/content/pdf/pdf-succinctly.pdf";
const distanceSettings = { fillColor: 'blue', opacity: 0.6, strokeColor: 'green' };
const perimeterSettings = { fillColor: 'green', opacity: 0.6, strokeColor: 'blue' };
const areaSettings = { fillColor: 'yellow', opacity: 0.6, strokeColor: 'orange' };
const radiusSettings = { fillColor: 'orange', opacity: 0.6, strokeColor: 'pink' };
const volumeSettings = { fillColor: 'pink', opacity: 0.6, strokeColor: 'yellow' };

provide('PdfViewer', [Toolbar, Magnification, Navigation, LinkAnnotation, BookmarkView, ThumbnailView,
  Print, TextSelection, TextSearch, Annotation, FormFields, FormDesigner, PageOrganizer])

</script>

Options API (Server-Backed)

<template>
  <div id="app">
    <ejs-pdfviewer id="pdfViewer" ref="pdfviewer" :serviceUrl="serviceUrl" :documentPath="documentPath"
      :distanceSettings="distanceSettings" :perimeterSettings="perimeterSettings" :areaSettings="areaSettings"
      :radiusSettings="radiusSettings" :volumeSettings="volumeSettings">
    </ejs-pdfviewer>
  </div>
</template>

<script>

import {
  PdfViewerComponent, Toolbar, Magnification, Navigation, LinkAnnotation,
  BookmarkView, Annotation, ThumbnailView, Print, TextSelection,
  TextSearch, FormFields, FormDesigner, PageOrganizer
} from '@syncfusion/ej2-vue-pdfviewer';

export default {
  name: "App",
  components: {
    "ejs-pdfviewer": PdfViewerComponent
  },
  data() {
    return {
      serviceUrl: "https://document.syncfusion.com/web-services/pdf-viewer/api/pdfviewer",
      documentPath: "https://cdn.syncfusion.com/content/pdf/pdf-succinctly.pdf",
      distanceSettings: { fillColor: 'blue', opacity: 0.6, strokeColor: 'green' },
      perimeterSettings: { fillColor: 'green', opacity: 0.6, strokeColor: 'blue' },
      areaSettings: { fillColor: 'yellow', opacity: 0.6, strokeColor: 'orange' },
      radiusSettings: { fillColor: 'orange', opacity: 0.6, strokeColor: 'pink' },
      volumeSettings: { fillColor: 'pink', opacity: 0.6, strokeColor: 'yellow' }
    };
  },

  provide: {
    PdfViewer: [Toolbar, Magnification, Navigation, LinkAnnotation, BookmarkView, ThumbnailView,
      Print, TextSelection, TextSearch, Annotation, FormFields, FormDesigner, PageOrganizer]
  }
}
</script>

Editing scale ratio and unit of the measurement annotation

The scale ratio and unit of measurement can be modified using the scale ratio option provided in the context menu of the PDF Viewer control.

The Units of measurements support for the measurement annotations in the PDF Viewer are

• Inch
• Millimeter
• Centimeter
• Point
• Pica
• Feet

Setting default scale ratio settings during control initialization

The properties of scale ratio for measurement annotation can be set before creating the control using ScaleRatioSettings as shown in the following code snippet,

Composition API (Standalone)

<template>
  <div id="app">
    <ejs-pdfviewer id="pdfViewer" ref="pdfviewer" :documentPath="documentPath" :resourceUrl="resourceUrl"
      :measurementSettings="measurementSettings">
    </ejs-pdfviewer>
  </div>
</template>

<script setup>
import {
  PdfViewerComponent as EjsPdfviewer, Toolbar, Magnification, Navigation, LinkAnnotation,
  BookmarkView, Annotation, ThumbnailView, Print, TextSelection,
  TextSearch, FormFields, FormDesigner, PageOrganizer
} from '@syncfusion/ej2-vue-pdfviewer';
import { provide, ref } from 'vue';

const pdfviewer = ref(null);
const documentPath = "https://cdn.syncfusion.com/content/pdf/pdf-succinctly.pdf";
const resourceUrl = 'https://cdn.syncfusion.com/ej2/31.2.2/dist/ej2-pdfviewer-lib';
const measurementSettings = { scaleRatio: 2, conversionUnit: 'cm', displayUnit: 'cm' };

provide('PdfViewer', [Toolbar, Magnification, Navigation, LinkAnnotation, BookmarkView, ThumbnailView,
  Print, TextSelection, TextSearch, Annotation, FormFields, FormDesigner, PageOrganizer])

const documentLoad = () => {
  const viewer = pdfviewer.value.ej2Instances;
  document.getElementById('set').addEventListener('click', () => {
    viewer.annotation.setAnnotationMode('Distance');
  });
}
</script>

Options API (Standalone)

<template>
  <div id="app">
    <ejs-pdfviewer id="pdfViewer" ref="pdfviewer" :documentPath="documentPath" :resourceUrl="resourceUrl"
      :measurementSettings="measurementSettings">
    </ejs-pdfviewer>
  </div>
</template>

<script>
import {
  PdfViewerComponent, Toolbar, Magnification, Navigation, LinkAnnotation,
  BookmarkView, Annotation, ThumbnailView, Print, TextSelection,
  TextSearch, FormFields, FormDesigner, PageOrganizer
} from '@syncfusion/ej2-vue-pdfviewer';

export default {
  name: "App",
  components: {
    "ejs-pdfviewer": PdfViewerComponent
  },
  data() {
    return {
      documentPath: "https://cdn.syncfusion.com/content/pdf/pdf-succinctly.pdf",
      resourceUrl: 'https://cdn.syncfusion.com/ej2/31.2.2/dist/ej2-pdfviewer-lib',
      measurementSettings: { scaleRatio: 2, conversionUnit: 'cm', displayUnit: 'cm' }
    };
  },
  provide: {
    PdfViewer: [Toolbar, Magnification, Navigation, LinkAnnotation, BookmarkView, ThumbnailView,
      Print, TextSelection, TextSearch, Annotation, FormFields, FormDesigner, PageOrganizer]
  },
  methods: {
    documentLoad() {
      const viewer = this.$refs.pdfviewer.ej2Instances;
      document.getElementById('set').addEventListener('click', () => {
        viewer.annotation.setAnnotationMode('Distance');
      });
    }
  }
}
</script>

Composition API (Server-Backed)

<template>
  <div id="app">
    <ejs-pdfviewer id="pdfViewer" ref="pdfviewer" :documentPath="documentPath" :serviceUrl="serviceUrl"
      :measurementSettings="measurementSettings">
    </ejs-pdfviewer>
  </div>
</template>

<script setup>
import {
  PdfViewerComponent as EjsPdfviewer, Toolbar, Magnification, Navigation, LinkAnnotation,
  BookmarkView, Annotation, ThumbnailView, Print, TextSelection,
  TextSearch, FormFields, FormDesigner, PageOrganizer
} from '@syncfusion/ej2-vue-pdfviewer';
import { provide, ref } from 'vue';

const pdfviewer = ref(null);
const serviceUrl = "https://document.syncfusion.com/web-services/pdf-viewer/api/pdfviewer";
const documentPath = "https://cdn.syncfusion.com/content/pdf/pdf-succinctly.pdf";
const measurementSettings = { scaleRatio: 2, conversionUnit: 'cm', displayUnit: 'cm' };

provide('PdfViewer', [Toolbar, Magnification, Navigation, LinkAnnotation, BookmarkView, ThumbnailView,
  Print, TextSelection, TextSearch, Annotation, FormFields, FormDesigner, PageOrganizer])

const documentLoad = () => {
  const viewer = pdfviewer.value.ej2Instances;
  document.getElementById('set').addEventListener('click', () => {
    viewer.annotation.setAnnotationMode('Distance');
  });
}
</script>

Options API (Server-Backed)

<template>
  <div id="app">
    <ejs-pdfviewer id="pdfViewer" ref="pdfviewer" :documentPath="documentPath" :serviceUrl="serviceUrl"
      :measurementSettings="measurementSettings">
    </ejs-pdfviewer>
  </div>
</template>

<script>
import {
  PdfViewerComponent, Toolbar, Magnification, Navigation, LinkAnnotation,
  BookmarkView, Annotation, ThumbnailView, Print, TextSelection,
  TextSearch, FormFields, FormDesigner, PageOrganizer
} from '@syncfusion/ej2-vue-pdfviewer';

export default {
  name: "App",
  components: {
    "ejs-pdfviewer": PdfViewerComponent
  },
  data() {
    return {
      serviceUrl: "https://document.syncfusion.com/web-services/pdf-viewer/api/pdfviewer",
      documentPath: "https://cdn.syncfusion.com/content/pdf/pdf-succinctly.pdf",
      measurementSettings: { scaleRatio: 2, conversionUnit: 'cm', displayUnit: 'cm' }
    };
  },
  provide: {
    PdfViewer: [Toolbar, Magnification, Navigation, LinkAnnotation, BookmarkView, ThumbnailView,
      Print, TextSelection, TextSearch, Annotation, FormFields, FormDesigner, PageOrganizer]
  },
  methods: {
    documentLoad() {
      const viewer = this.$refs.pdfviewer.ej2Instances;
      document.getElementById('set').addEventListener('click', () => {
        viewer.annotation.setAnnotationMode('Distance');
      });
    }
  }
}
</script>