Getting started with Svelte

Svelte is basically vanilla JavaScript, so you can use the core package.

To get started with PDFSlick for Svelte run:

npm install @pdfslick/core
# yarn add @pdfslick/core
# pnpm add @pdfslick/core

You can load a PDF document and subscribe to a portion of or the entire PDFSlick store's state, like in the following basic example:

<script lang="ts">
  import type { PDFSlick } from '@pdfslick/core';
  import { onMount, onDestroy } from 'svelte';

  // ...

  /**
   * Reference to the PDF Viewer container
   */
  let container: HTMLDivElement;

  /**
   * Reference to the pdfSlick instance
   */
  let pdfSlick: PDFSlick;

  /**
   * Keep PDF Slick state portions we're interested in using in your app
   */
  let pageNumber = 1;
  let numPages = 0;

  onMount(async () => {
    /**
     * This is all happening on client side, so we'll make sure we only load it there
     */
    const { create, PDFSlick } = await import('@pdfslick/core');

    /**
     * Create the PDF Slick store 
     */
    const store = create();

    pdfSlick = new PDFSlick({
      container,
      store,
      options: {
        scaleValue: 'page-fit'
      }
    });

    /**
     * Load the PDF document
     */
    pdfSlick.loadDocument(url);
    store.setState({ pdfSlick });

    /**
     * Subscribe to state changes, and keep values of interest as reactive Svelte vars, 
     * (or alternatively we could hook these or entire PDF state into a Svelte store)
     * 
     * Also keep reference of the unsubscribe function we call on component destroy
     */
    unsubscribe = store.subscribe((s) => {
      pageNumber = s.pageNumber;
      numPages = s.numPages;
    });
  });

  onDestroy(() => unsubscribe());

	// ...
</script>

<!-- ... -->

<div class="absolute inset-0 bg-slate-200/70 pdfSlick">

  <div class="flex-1 relative h-full" id="container">
    <!--
      The important part —
      we use the reference to this `container` when creating PDF Slick instance above
    -->
    <div id="viewerContainer" class="pdfSlickContainer absolute inset-0" bind:this={container}>
      <div id="viewer" class="pdfSlickViewer pdfViewer" />
    </div>
  </div>

  <!-- ... -->

  <!-- Use `pdfSlick`, `pageNumber` and `numPages` to create PDF pagination -->
  <div class="flex justify-center">
    <button
      on:click={() => pdfSlick?.gotoPage(Math.max(pageNumber - 1, 1))}
      disabled={pageNumber <= 1}
		>
      Show Previous Page
    </button>
    <button
      on:click={() =>  pdfSlick?.gotoPage(Math.min(pageNumber + 1, numPages))}
      disabled={pageNumber >= numPages}
    >
      Show Next Page
    </button>
  </div>

</div>

<!-- ... -->

For usage examples with Svelte take a look at the simple PDF Viewer and the complete PDF Viewer App in Svelte in the repo. There are also React examples that might be helpful.

import "@pdfslick/core/dist/pdf_viewer.css";