diff --git a/inc/core/improve.php b/inc/core/improve.php
index 96d8c65..91943b8 100644
--- a/inc/core/improve.php
+++ b/inc/core/improve.php
@@ -33,7 +33,7 @@ class improve
 {
     /** @var array  Allowed file extensions to open */
     private static $readfile_extensions = [
-        'php', 'xml', 'js', 'css', 'csv', 'html', 'htm', 'txt', 'md',
+        'php', 'xml', 'js', 'css', 'csv', 'html', 'htm', 'txt', 'md', 'po',
     ];
 
     /** @var array<action> $actions Loaded actions modules */
diff --git a/inc/module/po2php.php b/inc/module/po2php.php
new file mode 100644
index 0000000..58262f7
--- /dev/null
+++ b/inc/module/po2php.php
@@ -0,0 +1,75 @@
+<?php
+/**
+ * @brief improve, a plugin for Dotclear 2
+ *
+ * @package Dotclear
+ * @subpackage Plugin
+ *
+ * @author Jean-Christian Denis and contributors
+ *
+ * @copyright Jean-Christian Denis
+ * @copyright GPL-2.0 https://www.gnu.org/licenses/gpl-2.0.html
+ */
+declare(strict_types=1);
+
+namespace plugins\improve\module;
+
+/* improve */
+use plugins\improve\action;
+
+/* clearbricks */
+use l10n;
+
+/* php */
+
+/**
+ * Improve action module dcstore.xml
+ */
+class po2php extends action
+{
+    /** @var string License bloc */
+    private $license = <<<EOF
+    /**
+     * @package Dotclear
+     *
+     * @copyright Olivier Meunier & Association Dotclear
+     * @copyright GPL-2.0-only
+     */
+    EOF;
+
+    /** @var string Settings dcstore zip url pattern */
+    private $pattern = '';
+
+    protected function init(): bool
+    {
+        $this->setProperties([
+            'id'          => 'po2php',
+            'name'        => __('Translation files'),
+            'description' => __('Compile existing translation .po files to fresh .lang.php files'),
+            'priority'    => 310,
+            'types'       => ['plugin', 'theme'],
+        ]);
+
+        return true;
+    }
+
+    public function isConfigured(): bool
+    {
+        return true;
+    }
+
+    public function closeFile(): ?bool
+    {
+        if (!in_array($this->path_extension, ['po'])) {
+            return null;
+        }
+
+        if (l10n::generatePhpFileFromPo(substr($this->path_full, 0, -3), $this->license)) {
+            $this->setSuccess(__('Compile .po file to .lang.php'));
+        } else {
+            $this->setError(__('Failed to compile .po file'));
+        }
+
+        return true;
+    }
+}
diff --git a/locales/fr/main.po b/locales/fr/main.po
index 192a615..63aa9bd 100644
--- a/locales/fr/main.po
+++ b/locales/fr/main.po
@@ -3,7 +3,7 @@ msgstr ""
 "Content-Type: text/plain; charset=UTF-8\n"
 "Project-Id-Version: improve 0.10\n"
 "POT-Creation-Date: \n"
-"PO-Revision-Date: 2022-12-03T22:40:15+00:00\n"
+"PO-Revision-Date: 2022-12-21T11:10:34+00:00\n"
 "Last-Translator: Jean-Christian Denis\n"
 "Language-Team: \n"
 "MIME-Version: 1.0\n"
@@ -316,6 +316,18 @@ msgstr "Aucune erreur trouvé"
 msgid "Failed to run phpstan"
 msgstr "Impossible d'exécuter PHPStan"
 
+msgid "Translation files"
+msgstr "Fichier de traductions"
+
+msgid "Compile existing translation .po files to fresh .lang.php files"
+msgstr "Compile les fichiers de traductions .po existants en fichiers compilés .lang.php"
+
+msgid "Compile .po file to .lang.php"
+msgstr "Fichier .po compilé en .lang.php"
+
+msgid "Failed to compile .po file"
+msgstr "Impossible de compiler le fichier .po"
+
 msgid "Tabulations"
 msgstr "Tabulations"