Configure Minimum and Maximum Zoom Properties

Control zoom levels in the PDF Viewer using the minZoom and maxZoom properties to ensure a consistent viewing experience.

minZoom

The minZoom property specifies the minimum zoom percentage allowed in the PDF Viewer. This ensures that users cannot zoom out beyond a certain limit, which helps maintain readability and performance. Developers can set the minZoom property programmatically, defining the minimum zoom level based on the application’s requirements. This is particularly useful for preventing users from zooming out too much, which could make the content difficult to read.

maxZoom

The maxZoom property defines the maximum zoom percentage allowed in the PDF Viewer. By setting this property, developers can prevent users from zooming in too much, helping to avoid performance issues and maintain a smooth viewing experience. The maxZoom property can be set programmatically to control the upper limit of the zoom level. This is useful for applications where extremely high zoom levels might degrade performance or user experience.

Composition API (Standalone)

<template>
  <div id="app">
    <ejs-pdfviewer id="pdfViewer" ref="pdfviewer" :documentPath="documentPath" :resourceUrl="resourceUrl" :zoomValue="zoomValue">
    </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 resourceUrl = "https://cdn.syncfusion.com/ej2/31.2.2/dist/ej2-pdfviewer-lib";
const documentPath = "https://cdn.syncfusion.com/content/pdf/pdf-succinctly.pdf";
const maxZoom = 270,
const minZoom = 45,

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

</script>

Options API (Standalone)

<template>
  <div id="app">
    <ejs-pdfviewer id="pdfViewer" ref="pdfviewer" :documentPath="documentPath" :resourceUrl="resourceUrl" :zoomValue="zoomValue">
    </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 {
      resourceUrl: "https://cdn.syncfusion.com/ej2/31.2.2/dist/ej2-pdfviewer-lib",
      documentPath: "https://cdn.syncfusion.com/content/pdf/pdf-succinctly.pdf",
      maxZoom : 270,
      minZoom : 45,
    };
  },
  provide: {
    PdfViewer: [Toolbar, Magnification, Navigation, LinkAnnotation, BookmarkView, Annotation,
      ThumbnailView, Print, TextSelection, TextSearch, FormFields, FormDesigner, PageOrganizer]
  }
}
</script>

Composition API (Server-Backed)

<template>
  <div id="app">
    <ejs-pdfviewer id="pdfViewer" ref="pdfviewer" :documentPath="documentPath" :serviceUrl="serviceUrl" :zoomValue="zoomValue">
    </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 maxZoom = 270,
const minZoom = 45,

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

</script>

Options API (Server-Backed)

<template>
  <div id="app">
    <ejs-pdfviewer id="pdfViewer" ref="pdfviewer" :documentPath="documentPath" :serviceUrl="serviceUrl" :zoomValue="zoomValue">
    </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",
      maxZoom : 270,
      minZoom : 45,
    };
  },
  provide: {
    PdfViewer: [Toolbar, Magnification, Navigation, LinkAnnotation, BookmarkView, Annotation,
      ThumbnailView, Print, TextSelection, TextSearch, FormFields, FormDesigner, PageOrganizer]
  }
}
</script>

Restrict Zoom Percentage on Mobile Devices

You can easily restrict the zoom percentage on mobile devices using the minZoom and maxZoom properties. This feature allows you to set specific limits for zooming, ensuring smoother scrolling performance and efficient document loading on mobile devices. By controlling the zoom levels, you can provide a better user experience across different devices.

Composition API (Standalone)

<template>
  <div id="app">
    <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 } from 'vue';

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

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

const documentLoad = function (args) {
  var viewer = pdfviewer.value.ej2Instances;
  viewer = this.$refs.pdfviewer.ej2Instances;
  if (Browser.isDevice && !viewer.enableDesktopMode) {
    viewer.maxZoom = 200;
    viewer.minZoom = 10;
  }
  else{
    viewer.zoomMode = 'Default';
  }
}

</script>

Options API (Standalone)

<template>
  <div id="app">
    <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 {
      resourceUrl: "https://cdn.syncfusion.com/ej2/31.2.2/dist/ej2-pdfviewer-lib",
      documentPath: "https://cdn.syncfusion.com/content/pdf/pdf-succinctly.pdf"
    };
  },
  provide: {
    PdfViewer: [Toolbar, Magnification, Navigation, LinkAnnotation, BookmarkView, Annotation,
      ThumbnailView, Print, TextSelection, TextSearch, FormFields, FormDesigner, PageOrganizer]
  },
  methods: {
   documentLoad: function (args) {
      viewer = this.$refs.pdfviewer.ej2Instances;
      if (Browser.isDevice && !viewer.enableDesktopMode) {
        viewer.maxZoom = 200;
        viewer.minZoom = 10;
      }
      else{
          viewer.zoomMode = 'Default';
      }
    }
  }
}
</script>

Composition API (Server-Backed)

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

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

const documentLoad = function (args) {
  var viewer = pdfviewer.value.ej2Instances;
  viewer = this.$refs.pdfviewer.ej2Instances;
  if (Browser.isDevice && !viewer.enableDesktopMode) {
    viewer.maxZoom = 200;
    viewer.minZoom = 10;
  }
  else{
    viewer.zoomMode = 'Default';
  }
}

</script>

Options API (Server-Backed)

<template>
  <div id="app">
    <ejs-pdfviewer id="pdfViewer" ref="pdfviewer" :documentPath="documentPath" :serviceUrl="serviceUrl"
      :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, Annotation,
      ThumbnailView, Print, TextSelection, TextSearch, FormFields, FormDesigner, PageOrganizer]
  },
  methods: {
    documentLoad: function (args) {
      viewer = this.$refs.pdfviewer.ej2Instances;
      if (Browser.isDevice && !viewer.enableDesktopMode) {
        viewer.maxZoom = 200;
        viewer.minZoom = 10;
      }
      else{
          viewer.zoomMode = 'Default';
      }
    }
  }
}
</script>

This limits maximum zoom to 200% and minimum zoom to 10% on mobile devices, helping prevent performance issues from excessive zooming.