VuePDF

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Composables ​

usePDF ​

This package provides a default composable named usePDF that loads and prepare the PDF Document for it usage with VuePDF component, also let you get some basic information and properties about the document.

Keep in mind that usePDF use the same DocumentInitParameter as pdf.js, so you could decide how pdf.js should loads your PDF and then make use of more of pdf.js features that are not included in VuePDF by default.

vue
<script setup>
import { VuePDF, usePDF } from '@tato30/vue-pdf'

const { pdf, pages, info } = usePDF('sample.pdf')
</script>

<template>
  <VuePDF :pdf="pdf" />
</template>

Reactivity ​

usePDF is also reactive if you use a ref<src> instead of a plain src, when the value of ref changes the returned values also will chage.

vue
<script setup>
import { VuePDF, usePDF } from '@tato30/vue-pdf'

// Changing currentPdf value will change pdf, pages and info values
const currentPdf = ref('sample.pdf')
const { pdf, pages, info } = usePDF(currentPdf)
</script>

<template>
  <VuePDF :pdf="pdf" />
</template>

Parameters ​

src ​

Type: string | URL | TypedArray | DocumentInitParameters | ref<string> | ref<URL> | ref<TypedArray> | ref<DocumentInitParameters>
Required: True

This parameter is the same src of pdf.js

js
const { pdf, pages, info } = usePDF('sample.pdf')

options ​

Type: object

An object with the following properties:

  • onPassword: Callback function to request the document password if no password (or wrong password) was provided.
  • onProgress: Callback function to enable progress monitor.
  • onError: function to handle pdf loading errors
js
function onPassword(updatePassword, reason) {
  console.log(`Reason for callback: ${reason}`)
  updatePassword('password1234')
}

function onProgress({ loaded, total }) {
  console.log(`${loaded / total * 100}% Loaded`)
}

function onError(reason) {
  console.error(`PDF loading error: ${reason}`)
}

const { pdf, pages, info } = usePDF('sample.pdf', {
  onPassword,
  onProgress,
  onError
})

Properties ​

All values returned by usePDF are shallowRef objects.

pdf ​

Type: PDFDocumentLoadingTask

Document's loading task, see PDFDocumentLoadingTask for more details.

pages ​

Type: int

Document's number pages.

info ​

Type: object

Document's information object.

json
{
  "metadata": {...}, // Metadata object
  "attachments": {...}, // File attachments object
  "javascript": [...], // Array of embedded scripts
  "outline": {...} // Outline objects
}

getPDFDestination ​

Type: function

This function returns the page number referenced by dest object used by internal-links or outline object. Check the related example in Table of Content

print ​

Type: function

Open the browser's print dialog with current PDF loaded with the following parameters:

  • dpi: Pages resolution (default: 150).
  • filename: Filename of the printed file (default: 'filename').

download ​

Type: function

Trigger a downloading action using an HTMLAnchorElement with the following parameters:

  • filename: Filename of the downloaded file (default: 'filename')

Document API ​

You can access to PDFDocumentProxy through pdf's promise property and use its API methods to get more document's info like annotationStorage or use functions like saveDocument, cleanup, etc.

js
const { pdf } = usePDF('document.pdf')

function doSomething() {
  pdf.value.promise.then((doc) => {
    // doc.annotationsStorage
    // doc.saveDocument()
    // doc.cleanup()
    // doc.getData()
    // ...
  })
}

Make your own composable ​

Using usePDF it's not required, you can use the pdf.js API in your components or build your own composable yourself. Just need to be sure to send on pdf prop a shallowRef | ref PDFDocumentLoadingTask object.

vue
<script setup>
import { onMounted, ref } from 'vue'
import * as PDFJS from 'pdfjs-dist'

const pdf = ref()

function loadPDF() {
  const loadingTask = PDFJS.getDocument('https://raw.githubusercontent.com/mozilla/pdf.js/ba2edeae/web/compressed.tracemonkey-pldi-09.pdf')
  pdf.value = loadingTask
}

onMounted(() => {
  loadPDF()
})
</script>

<template>
  <div>
    <VuePDF :pdf="pdf" />
  </div>
</template>