diff --git a/extension.json b/extension.json
index 5d4ed89..ea4ce6b 100644
--- a/extension.json
+++ b/extension.json
@@ -18,9 +18,6 @@
 		"PdfHandlerDpi": {
 			"value": 150
 		},
-		"PdfCreateThumbnailsInJobQueue": {
-			"value": false
-		},
 		"PdfPostProcessor": {
 			"value": "/usr/bin/convert"
 		},
@@ -43,16 +40,10 @@
 		]
 	},
 	"Hooks": {
-		"UploadVerifyFile": [
-			"MediaWiki\\Extension\\PdfHandler\\CreatePdfThumbnailsJob::insertJobs"
-		],
 		"ResourceLoaderRegisterModules": [
 			"MediaWiki\\Extension\\PdfHandler\\PdfHandler::registerWarningModule"
 		]
 	},
-	"JobClasses": {
-		"createPdfThumbnailsJob": "MediaWiki\\Extension\\PdfHandler\\CreatePdfThumbnailsJob"
-	},
 	"MediaHandlers": {
 		"application/pdf": "MediaWiki\\Extension\\PdfHandler\\PdfHandler"
 	},
diff --git a/includes/CreatePdfThumbnailsJob.php b/includes/CreatePdfThumbnailsJob.php
deleted file mode 100644
index 05f0b07..0000000
--- a/includes/CreatePdfThumbnailsJob.php
+++ /dev/null
@@ -1,153 +0,0 @@
-<?php
-
-namespace MediaWiki\Extension\PdfHandler;
-
-use Job;
-use JobQueueGroup;
-use Linker;
-use MediaWiki\MediaWikiServices;
-use Title;
-use UploadBase;
-use User;
-
-class CreatePdfThumbnailsJob extends Job {
-	/**
-	 * Flags for thumbnail jobs
-	 */
-	private const BIG_THUMB = 1;
-	private const SMALL_THUMB = 2;
-
-	/**
-	 * Construct a thumbnail job
-	 *
-	 * @param Title $title Title object
-	 * @param array $params Associative array of options:
-	 *     page:    page number for which the thumbnail will be created
-	 *     jobtype: CreatePDFThumbnailsJob::BIG_THUMB or CreatePDFThumbnailsJob::SMALL_THUMB
-	 *              BIG_THUMB will create a thumbnail visible for full thumbnail view,
-	 *              SMALL_THUMB will create a thumbnail shown in "previous page"/"next page" boxes
-	 */
-	public function __construct( $title, $params ) {
-		parent::__construct( 'createPdfThumbnailsJob', $title, $params );
-	}
-
-	/**
-	 * Run a thumbnail job on a given PDF file.
-	 * @return bool true
-	 */
-	public function run() {
-		if ( !isset( $this->params['page'] ) ) {
-			wfDebugLog( 'thumbnails', 'A page for thumbnails job of ' . $this->title->getText() .
-				' was not specified! That should never happen!' );
-			// no page set? that should never happen
-			return true;
-		}
-
-		// we just want a local file
-		$file = MediaWikiServices::getInstance()->getRepoGroup()->getLocalRepo()
-			->newFile( $this->title );
-
-		if ( !$file ) {
-			// Just silently fail, perhaps the file was already deleted, don't bother
-			return true;
-		}
-
-		switch ( $this->params['jobtype'] ) {
-			case self::BIG_THUMB:
-				global $wgImageLimits;
-				// Ignore user preferences, do default thumbnails
-				// everything here shamelessy copied and reused from includes/ImagePage.php
-				if ( method_exists( \MediaWiki\User\UserOptionsLookup::class, 'getDefaultOption' ) ) {
-					// MW 1.35+
-					$userOptionsLookup = MediaWikiServices::getInstance()->getUserOptionsLookup();
-					$sizeSel = $userOptionsLookup->getDefaultOption( 'imagesize' );
-				} else {
-					$sizeSel = User::getDefaultOption( 'imagesize' );
-				}
-
-				// The user offset might still be incorrect, specially if
-				// $wgImageLimits got changed (see bug #8858).
-				if ( !isset( $wgImageLimits[$sizeSel] ) ) {
-					// Default to the first offset in $wgImageLimits
-					$sizeSel = 0;
-				}
-				$max = $wgImageLimits[$sizeSel];
-				$maxWidth = $max[0];
-				$maxHeight = $max[1];
-
-				$width_orig = $file->getWidth( $this->params['page'] );
-				$width = $width_orig;
-				$height_orig = $file->getHeight( $this->params['page'] );
-				$height = $height_orig;
-				if ( $width > $maxWidth || $height > $maxHeight ) {
-					// Calculate the thumbnail size.
-					// First case, the limiting factor is the width, not the height.
-					if ( $width / $height >= $maxWidth / $maxHeight ) {
-						// $height = round( $height * $maxWidth / $width );
-						$width = $maxWidth;
-						// Note that $height <= $maxHeight now.
-					} else {
-						$newwidth = floor( $width * $maxHeight / $height );
-						// $height = round( $height * $newwidth / $width );
-						$width = $newwidth;
-						// Note that $height <= $maxHeight now, but might not be identical
-						// because of rounding.
-					}
-					$transformParams = [ 'page' => $this->params['page'], 'width' => $width ];
-					$file->transform( $transformParams );
-				}
-				break;
-
-			case self::SMALL_THUMB:
-				Linker::makeThumbLinkObj( $this->title, $file, '', '', 'none',
-					[ 'page' => $this->params['page'] ] );
-				break;
-		}
-
-		return true;
-	}
-
-	/**
-	 * @param UploadBase $upload
-	 * @param string $mime
-	 * @param string &$error
-	 * @return bool
-	 */
-	public static function insertJobs( $upload, $mime, &$error ) {
-		global $wgPdfCreateThumbnailsInJobQueue;
-		if ( !$wgPdfCreateThumbnailsInJobQueue ) {
-			return true;
-		}
-		$magic = MediaWikiServices::getInstance()->getMimeAnalyzer();
-		if ( !$magic->isMatchingExtension( 'pdf', $mime ) ) {
-			// not a PDF, abort
-			return true;
-		}
-
-		$title = $upload->getTitle();
-		$uploadFile = $upload->getLocalFile();
-		if ( $uploadFile === null ) {
-			wfDebugLog( 'thumbnails', '$uploadFile seems to be null, should never happen...' );
-			// should never happen, but it's better to be secure
-			return true;
-		}
-
-		$metadata = $uploadFile->getMetadata();
-		$unserialized = unserialize( $metadata );
-		$pages = intval( $unserialized['Pages'] );
-
-		$jobs = [];
-		for ( $i = 1; $i <= $pages; $i++ ) {
-			$jobs[] = new CreatePdfThumbnailsJob(
-				$title,
-				[ 'page' => $i, 'jobtype' => self::BIG_THUMB ]
-			);
-			$jobs[] = new CreatePdfThumbnailsJob(
-				$title,
-				[ 'page' => $i, 'jobtype' => self::SMALL_THUMB ]
-			);
-		}
-		JobQueueGroup::singleton()->push( $jobs );
-		return true;
-	}
-}