Export Plugin

The Export Plugin provides a simple way for users to download and save the PDF file they are viewing.

Installation

The plugin is available as a separate NPM package.


npm install @embedpdf/plugin-export


pnpm add @embedpdf/plugin-export


yarn add @embedpdf/plugin-export


bun add @embedpdf/plugin-export

Registration

Import ExportPluginPackage and add it to the plugins array. You can configure a fallback filename for the downloaded file.


import { createPluginRegistration } from '@embedpdf/core'
// ... other imports
import { ExportPluginPackage } from '@embedpdf/plugin-export/svelte'
 
const plugins = [
  // ... other essential plugins
  createPluginRegistration(LoaderPluginPackage, { /* ... */ }),
  createPluginRegistration(ViewportPluginPackage),
  createPluginRegistration(ScrollPluginPackage),
  createPluginRegistration(RenderPluginPackage),
 
  // Register the export plugin
  createPluginRegistration(ExportPluginPackage, {
    defaultFileName: 'my-document.pdf',
  }),
]

Usage

The plugin works by combining a composable for initiating the download with a component that handles the browser interaction.

Triggering a Download

Use the useExportCapability composable to get access to the plugin’s download method. Call this method from a button in your toolbar to start the download process.


<script lang="ts">
import { useExportCapability } from '@embedpdf/plugin-export/svelte';
 
const exportApi = useExportCapability();
</script>
 
<button onclick={() => exportApi.provides?.download()} disabled={!exportApi.provides}>
  Download
</button>

Live Example

This example shows a viewer with a download button. Clicking it will trigger a download of the PDF file.

API Reference

Configuration (`ExportPluginConfig`)

Option	Type	Description
`defaultFileName`	`string`	A fallback filename to use for the downloaded file if the original document does not have a name. Default: `document.pdf`

Composable: `useExportCapability()`

This composable connects your component to the export plugin’s functions.

Returns

Property	Type	Description
`provides`	`ExportCapability \| null`	An object with methods to control exporting, or `null` if the plugin is not ready.

`ExportCapability` Methods

Method	Description
`download()`	The primary method to trigger a download. It signals the auto-mounted `<Download />` component to prepare the file and prompt the user.
`saveAsCopy()`	A lower-level method that returns a `Task<ArrayBuffer>`. It retrieves the document’s data as an `ArrayBuffer` without triggering a download. Useful for custom export logic.