diff --git a/.github/workflows/ci.yml b/.github/workflows/ci.yml
index eec74dc..0279f10 100644
--- a/.github/workflows/ci.yml
+++ b/.github/workflows/ci.yml
@@ -176,7 +176,7 @@ jobs:
         uses: shivammathur/setup-php@e6f75134d35752277f093989e72e140eaa222f35 # pin@v2
         with:
           coverage: none
-          tools: php-cs-fixer:3.8.0
+          tools: php-cs-fixer:3.49.0
 
       - name: Cache analysis data
         id: finishPrepare
diff --git a/.gitignore b/.gitignore
index aec3c3f..e73d216 100644
--- a/.gitignore
+++ b/.gitignore
@@ -1,13 +1,14 @@
-# OS files
+# os
 .DS_Store
 
-# Vendor files
+# vendor files
 /node_modules
 /vendor
 
-# Cache and temporary files
-/.cache
-/.php-cs-fixer.cache
-/.phpunit.result.cache
+# cs fixer
+.php-cs-fixer.cache
+
+# tests
+.phpunit.cache
 /tests/coverage
-/tests/*/tmp
\ No newline at end of file
+/tests/tmp
diff --git a/.php-cs-fixer.dist.php b/.php-cs-fixer.dist.php
index f7c903b..3957f88 100644
--- a/.php-cs-fixer.dist.php
+++ b/.php-cs-fixer.dist.php
@@ -8,13 +8,12 @@
 $config = new PhpCsFixer\Config();
 return $config
 	->setRules([
-		'@PSR1' => true,
-		'@PSR2' => true,
+		'@PSR12' => true,
 		'align_multiline_comment' => ['comment_type' => 'phpdocs_like'],
 		'array_indentation' => true,
 		'array_syntax' => ['syntax' => 'short'],
 		'cast_spaces' => ['space' => 'none'],
-		'class_keyword_remove' => false,
+		// 'class_keyword_remove' => true, // replaces static::class with 'static' (won't work)
 		'combine_consecutive_issets' => true,
 		'combine_consecutive_unsets' => true,
 		'combine_nested_dirname' => true,
@@ -45,6 +44,7 @@
 		'no_unused_imports' => true,
 		'no_useless_return' => true,
 		'ordered_imports' => ['sort_algorithm' => 'alpha'],
+		// 'phpdoc_add_missing_param_annotation' => ['only_untyped' => false], // adds params in the wrong order
 		'phpdoc_align' => ['align' => 'left'],
 		'phpdoc_indent' => true,
 		'phpdoc_scalar' => true,
diff --git a/README.md b/README.md
index e39b36e..7580bd0 100644
--- a/README.md
+++ b/README.md
@@ -37,6 +37,7 @@ This should print the Kirby CLI version and a list of available commands
 ## Available core commands
 
 ```
+- kirby clean:content
 - kirby clear:cache
 - kirby clear:media
 - kirby clear:sessions
@@ -279,7 +280,7 @@ return [
 
 ---
 
-© 2009-2022 Bastian Allgeier
+© 2009 Bastian Allgeier
 [getkirby.com](https://getkirby.com) · [License agreement](./LICENSE.md)
 
 
diff --git a/commands/clean/content.php b/commands/clean/content.php
new file mode 100644
index 0000000..d470afb
--- /dev/null
+++ b/commands/clean/content.php
@@ -0,0 +1,79 @@
+<?php
+
+declare(strict_types = 1);
+
+use Kirby\CLI\CLI;
+
+function clean(
+	Generator $collection,
+	array|null $ignore = null,
+	string|null $lang = null
+): void {
+	foreach($collection as $item) {
+		// get all fields in the content file
+		$contentFields = $item->content($lang)->fields();
+
+		// unset all fields in the `$ignore` array
+		foreach ($ignore as $field) {
+			if (array_key_exists($field, $contentFields) === true) {
+				unset($contentFields[$field]);
+			}
+		}
+
+		// get the keys
+		$contentFields = array_keys($contentFields);
+
+		// get all field keys from blueprint
+		$blueprintFields = array_keys($item->blueprint()->fields());
+
+		// get all field keys that are in $contentFields but not in $blueprintFields
+		$fieldsToBeDeleted = array_diff($contentFields, $blueprintFields);
+
+		// update page only if there are any fields to be deleted
+		if (count($fieldsToBeDeleted) > 0) {
+
+			// flip keys and values and set new values to null
+			$data = array_map(fn ($value) => null, array_flip($fieldsToBeDeleted));
+
+			// try to update the page with the data
+			try {
+				$item->update($data, $lang);
+			} catch (Exception $e) {
+				throw $e->getMessage();
+			}
+		}
+	}
+}
+
+return [
+	'description' => 'Deletes all fields from page, file or user content files that are not defined in the blueprint, no matter if they contain content or not.',
+	'command' => static function (CLI $cli): void {
+
+		$cli->confirmToContinue('This will delete all fields from content files that are not defined in blueprints, no matter if they contain content or not. Are you sure?');
+
+		$kirby = $cli->kirby();
+
+		// Authenticate as almighty
+		$kirby->impersonate('kirby');
+
+		// Define your collection
+		$collection = $kirby->models();
+
+		// set the fields to be ignored
+		$ignore = ['uuid', 'title', 'slug', 'template', 'sort', 'focus'];
+
+		// call the script for all languages if multilang
+		if ($kirby->multilang() === true) {
+			$languages = $kirby->languages();
+
+			foreach ($languages as $language) {
+				clean($collection, $ignore, $language->code());
+			}
+
+		} else {
+			clean($collection, $ignore);
+		}
+
+		$cli->success('The content files have been cleaned');
+	}
+];
diff --git a/commands/download.php b/commands/download.php
index b42b805..995f9cc 100755
--- a/commands/download.php
+++ b/commands/download.php
@@ -20,6 +20,7 @@
 	'command' => static function (CLI $cli): void {
 		$client   = new Client();
 		$progress = $cli->progress()->total(100);
+		$file     = $cli->arg('file');
 
 		try {
 			$response = $client->get($cli->arg('url'), [
@@ -35,7 +36,7 @@
 				},
 			]);
 
-			file_put_contents($cli->arg('file'), (string)$response->getBody());
+			file_put_contents($file, (string)$response->getBody());
 		} catch (Throwable $e) {
 			throw new Exception('The file could not be downloaded. (Status: ' . $e->getResponse()->getStatusCode() . ')');
 		}
diff --git a/commands/unzip.php b/commands/unzip.php
index 067272f..8b25d53 100755
--- a/commands/unzip.php
+++ b/commands/unzip.php
@@ -29,7 +29,7 @@
 		}
 
 		// extract the zip file
-		exec('unzip ' . $file . ' -d ' . $to);
+		exec('unzip ' . escapeshellarg($file) . ' -d ' . escapeshellarg($to));
 
 		$to = realpath($to);
 
@@ -40,7 +40,7 @@
 			throw new Exception('The archive directory could not be found');
 		}
 
-		exec('mv ' . $to . '/*/{.[!.],}* ' . $to . '/');
-		exec('rm -rf ' . $archive);
+		exec('mv ' . escapeshellarg($to) . '/*/{.[!.],}* ' . escapeshellarg($to) . '/');
+		exec('rm -rf ' . escapeshellarg($archive));
 	}
 ];
diff --git a/composer.json b/composer.json
index a5627a8..c6a51c0 100644
--- a/composer.json
+++ b/composer.json
@@ -2,7 +2,7 @@
 	"name": "getkirby/cli",
 	"description": "Kirby command line interface",
 	"license": "MIT",
-	"version": "1.2.0",
+	"version": "1.3.0",
 	"keywords": [
 		"kirby",
 		"cms",
diff --git a/composer.lock b/composer.lock
index a85e0d6..faffede 100644
--- a/composer.lock
+++ b/composer.lock
@@ -4,7 +4,7 @@
         "Read more about it at https://getcomposer.org/doc/01-basic-usage.md#installing-dependencies",
         "This file is @generated automatically"
     ],
-    "content-hash": "f843b10a4714c43702cdb0414727e0e9",
+    "content-hash": "919c6e5cb0284e3c87cf7cf7b6d96eb0",
     "packages": [
         {
             "name": "guzzlehttp/guzzle",
diff --git a/phpunit.xml.dist b/phpunit.xml.dist
index a64a205..28dbd48 100644
--- a/phpunit.xml.dist
+++ b/phpunit.xml.dist
@@ -1,32 +1,41 @@
-<?xml version="1.0"?>
-
+<?xml version="1.0" encoding="UTF-8"?>
 <phpunit
 	xmlns:xsi="http://www.w3.org/2001/XMLSchema-instance"
-	xsi:noNamespaceSchemaLocation="https://schema.phpunit.de/9.3/phpunit.xsd"
-
+	xsi:noNamespaceSchemaLocation="https://schema.phpunit.de/10.5/phpunit.xsd"
+	beStrictAboutOutputDuringTests="true"
 	bootstrap="tests/bootstrap.php"
+	cacheDirectory=".phpunit.cache"
 	colors="true"
-	forceCoversAnnotation="true"
-	verbose="true"
+	controlGarbageCollector="true"
+	displayDetailsOnIncompleteTests="true"
+	displayDetailsOnSkippedTests="true"
+	displayDetailsOnTestsThatTriggerDeprecations="true"
+	displayDetailsOnTestsThatTriggerErrors="true"
+	displayDetailsOnTestsThatTriggerNotices="true"
+	displayDetailsOnTestsThatTriggerWarnings="true"
+	failOnDeprecation="true"
+	failOnEmptyTestSuite="true"
+	failOnIncomplete="true"
+	failOnNotice="true"
+	failOnRisky="true"
+	failOnWarning="true"
 	stderr="true"
 >
-	<coverage>
-		<include>
-			<directory>./src</directory>
-		</include>
-
-		<exclude>
-			<directory suffix=".php">./src/Kql/Interceptors</directory>
-		</exclude>
-	</coverage>
+  <source>
+    <include>
+      <directory>./src</directory>
+    </include>
+  </source>
 
 	<testsuites>
-		<testsuite name="Tests">
-			<directory>./tests</directory>
-		</testsuite>
-	</testsuites>
+    <testsuite name="Tests">
+      <directory>./tests</directory>
+    </testsuite>
+  </testsuites>
+
+  <php>
+    <ini name="memory_limit" value="2048M"/>
+  </php>
 
-	<php>
-		<ini name="memory_limit" value="2048M" />
-    </php>
+	<coverage ignoreDeprecatedCodeUnits="true" />
 </phpunit>
diff --git a/src/CLI/CLI.php b/src/CLI/CLI.php
index 58614e1..58a2471 100644
--- a/src/CLI/CLI.php
+++ b/src/CLI/CLI.php
@@ -518,12 +518,11 @@ public function run(?string $name = null, ...$args): void
 			...$args
 		];
 
-		$exception = null;
-
 		try {
 			$this->climate->arguments->parse($argv);
 		} catch (Throwable $e) {
-			$exception = $e;
+			$this->error($e->getMessage());
+			exit;
 		}
 
 		// enable quiet mode
@@ -537,10 +536,6 @@ public function run(?string $name = null, ...$args): void
 			return;
 		}
 
-		if ($exception !== null) {
-			throw $exception;
-		}
-
 		$command['command']($this);
 	}