diff --git a/src/Command/TranslationCommand.php b/src/Command/TranslationCommand.php
new file mode 100644
index 00000000..e70ea7a1
--- /dev/null
+++ b/src/Command/TranslationCommand.php
@@ -0,0 +1,135 @@
+<?php
+
+/*
+ * This file is part of the Kimai time-tracking app.
+ *
+ * For the full copyright and license information, please view the LICENSE
+ * file that was distributed with this source code.
+ */
+
+namespace App\Command;
+
+use App\Kernel;
+use Symfony\Component\Console\Command\Command;
+use Symfony\Component\Console\Input\InputInterface;
+use Symfony\Component\Console\Input\InputOption;
+use Symfony\Component\Console\Output\OutputInterface;
+use Symfony\Component\Console\Style\SymfonyStyle;
+
+/**
+ * Command used to execute all the basic application bootstrapping AFTER "composer install" was executed.
+ *
+ * @codeCoverageIgnore
+ */
+class TranslationCommand extends Command
+{
+    private $projectDirectory;
+    private $environment;
+
+    public function __construct(string $projectDirectory, string $kernelEnvironment)
+    {
+        parent::__construct();
+        $this->projectDirectory = $projectDirectory;
+        $this->environment = $kernelEnvironment;
+    }
+
+    /**
+     * {@inheritdoc}
+     */
+    protected function configure()
+    {
+        $this
+            ->setName('kimai:translations')
+            ->setDescription('Translation adjustments')
+            ->addOption('resname', null, InputOption::VALUE_NONE, 'Fix the resname vs. id attribute')
+            ->addOption('duplicates', null, InputOption::VALUE_NONE, 'Find duplicate translation keys')
+            ->addOption('extension', null, InputOption::VALUE_NONE, 'Find translation files with wrong extensions')
+        ;
+    }
+
+    public function isEnabled(): bool
+    {
+        return $this->environment !== 'prod';
+    }
+
+    protected function execute(InputInterface $input, OutputInterface $output): ?int
+    {
+        $io = new SymfonyStyle($input, $output);
+
+        $bases = [
+            'core' => $this->projectDirectory . '/translations',
+            'plugins' => $this->projectDirectory . Kernel::PLUGIN_DIRECTORY . '/*/Resources/translations',
+        ];
+
+        if ($input->getOption('resname')) {
+            foreach ($bases as $id => $directory) {
+                $files = glob($directory . '/*.xlf');
+
+                foreach ($files as $file) {
+                    $this->fixXlfFile($file);
+                }
+            }
+        }
+
+        if ($input->getOption('extension')) {
+            foreach ($bases as $id => $directory) {
+                $files = glob($directory . '/*.xliff');
+
+                foreach ($files as $file) {
+                    $file = str_replace($this->projectDirectory, '', $file);
+                    $io->warning($file);
+                }
+            }
+        }
+
+        if ($input->getOption('duplicates')) {
+            $duplicates = [];
+
+            $files = glob($bases['core'] . '/*.xlf');
+            foreach ($files as $file) {
+                $xml = simplexml_load_file($file);
+                foreach ($xml->file->body->{'trans-unit'} as $unit) {
+                    $n = (string) $unit['resname'];
+                    if (!\array_key_exists($n, $duplicates)) {
+                        $duplicates[$n] = [];
+                    }
+                    $b = explode('.', basename($file))[0];
+                    if (!\in_array($b, $duplicates[$n])) {
+                        $duplicates[$n][] = $b;
+                    }
+                }
+            }
+
+            foreach ($duplicates as $id => $files) {
+                if (\count($files) > 1) {
+                    $io->text($id . ' => ' . implode(', ', $files));
+                }
+            }
+        }
+
+        return 0;
+    }
+
+    private function fixXlfFile(string $file): void
+    {
+        $xml = simplexml_load_file($file);
+        if (isset($xml->file->header)) {
+            unset($xml->file->header);
+        }
+
+        foreach ($xml->file->body->{'trans-unit'} as $unit) {
+            $source = $unit->source;
+            if (!isset($unit['resname'])) {
+                $unit['resname'] = $source;
+            }
+            $unit['id'] = strtr(substr(base64_encode(hash('sha256', $source, true)), 0, 7), '/+', '._');
+        }
+
+        $xmlDocument = new \DOMDocument('1.0');
+        $xmlDocument->preserveWhiteSpace = false;
+        $xmlDocument->formatOutput = true;
+        $xmlDocument->loadXML($xml->asXML());
+
+        file_put_contents($file, $xmlDocument->saveXML());
+    }
+}
diff --git a/src/Kernel.php b/src/Kernel.php
index 6e5988ab..7c779484 100644
--- a/src/Kernel.php
+++ b/src/Kernel.php
@@ -45,6 +45,7 @@ class Kernel extends BaseKernel
 {
     use MicroKernelTrait;
 
+    public const PLUGIN_DIRECTORY = '/var/plugins';
     public const CONFIG_EXTS = '.{php,xml,yaml,yml}';
 
     public const TAG_PLUGIN = 'kimai.plugin';
@@ -128,7 +129,7 @@ class Kernel extends BaseKernel
 
     private function getBundleClasses(): array
     {
-        $pluginsDir = $this->getProjectDir() . '/var/plugins';
+        $pluginsDir = $this->getProjectDir() . self::PLUGIN_DIRECTORY;
         if (!file_exists($pluginsDir)) {
             return [];
         }