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diff --git a/www/wiki/extensions/ConfirmEdit/maintenance/DeleteOldFancyCaptchas.php b/www/wiki/extensions/ConfirmEdit/maintenance/DeleteOldFancyCaptchas.php
new file mode 100644
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+++ b/www/wiki/extensions/ConfirmEdit/maintenance/DeleteOldFancyCaptchas.php
@@ -0,0 +1,92 @@
+<?php
+/**
+ * Deletes fancy captchas from storage
+ *
+ * This program is free software; you can redistribute it and/or modify
+ * it under the terms of the GNU General Public License as published by
+ * the Free Software Foundation; either version 2 of the License, or
+ * (at your option) any later version.
+ *
+ * This program is distributed in the hope that it will be useful,
+ * but WITHOUT ANY WARRANTY; without even the implied warranty of
+ * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
+ * GNU General Public License for more details.
+ *
+ * You should have received a copy of the GNU General Public License along
+ * with this program; if not, write to the Free Software Foundation, Inc.,
+ * 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301, USA.
+ * http://www.gnu.org/copyleft/gpl.html
+ *
+ * @file
+ * @ingroup Maintenance
+ */
+if ( getenv( 'MW_INSTALL_PATH' ) ) {
+	$IP = getenv( 'MW_INSTALL_PATH' );
+} else {
+	$IP = __DIR__ . '/../../..';
+}
+
+require_once "$IP/maintenance/Maintenance.php";
+
+/**
+ * Maintenance script that deletes old fancy captchas from storage
+ *
+ * @ingroup Maintenance
+ */
+class DeleteOldFancyCaptchas extends Maintenance {
+	public function __construct() {
+		parent::__construct();
+		$this->mDescription = "Deletes old fancy captchas from storage";
+		$this->addOption(
+			"date",
+			'Delete fancy captchas that were created before this date (e.g. 20170101000000)',
+			true,
+			true
+		);
+		$this->requireExtension( "FancyCaptcha" );
+	}
+
+	public function execute() {
+		$instance = ConfirmEditHooks::getInstance();
+		if ( !( $instance instanceof FancyCaptcha ) ) {
+			$this->error( "\$wgCaptchaClass is not FancyCaptcha.\n", 1 );
+		}
+
+		$countAct = $instance->getCaptchaCount();
+		$this->output( "Current number of captchas is $countAct.\n" );
+
+		$backend = $instance->getBackend();
+		$dir = $backend->getRootStoragePath() . '/captcha-render';
+
+		$filesToDelete = [];
+		$deleteDate = $this->getOption( 'date' );
+		foreach (
+			$backend->getFileList( [ 'dir' => $dir ] ) as $file
+		) {
+			$fullPath = $dir . '/' . $file;
+			$timestamp = $backend->getFileTimestamp( [ 'src' => $fullPath ] );
+			if ( $timestamp < $deleteDate ) {
+				$filesToDelete[] = [ 'op' => 'delete', 'src' => $fullPath, ];
+			}
+		}
+
+		$count = count( $filesToDelete );
+
+		if ( !$count ) {
+			$this->output( "No old fancy captchas to delete!\n" );
+			return;
+		}
+
+		$ret = $backend->doQuickOperations( $filesToDelete );
+
+		if ( $ret->isOK() ) {
+			$this->output( "$count old fancy captchas deleted.\n" );
+		} else {
+			$this->output( "Deleting old captchas errored.\n" );
+			$this->output( implode( "\n", $ret->getErrors() ) );
+		}
+	}
+}
+
+$maintClass = "DeleteOldFancyCaptchas";
+require_once RUN_MAINTENANCE_IF_MAIN;