diff --git a/CHANGELOG.md b/CHANGELOG.md
index 4797d07..c0d07ce 100644
--- a/CHANGELOG.md
+++ b/CHANGELOG.md
@@ -10,6 +10,10 @@ Types of changes
     Security in case of vulnerabilities.
 )
 
+## [1.1.0](https://github.com/pdir/contao-seo-plugin/tree/1.1.0) - 2025-03-21
+
+- [Added] Specify the percentage of content created with artificial intelligence (AI)
+
 ## [1.0.3](https://github.com/pdir/contao-seo-plugin/tree/1.0.3) - 2024-11-09
 
 - [Fixed] do not use global namespace in OutputFrontendTemplateListener
diff --git a/README.md b/README.md
index 19a20d3..92abcb0 100644
--- a/README.md
+++ b/README.md
@@ -5,12 +5,13 @@ We help website owners and editorial teams to get more traffic from search engin
 helps users to optimize their content and make it easy to find for both users and search engines. With the Contao SEO
 plugin, you have the most important on-page factors directly in view.
 
-### Current range of functions of version 1.0.0
+### Current range of functions of version 1.1.0
 - SEO analysis of 8 typical on-page problems
 - IndexNow function for all known providers [indexnow.org](https://www.indexnow.org/faq)
 - Possibility to activate a 404 error log
 - Monitoring of alias changes (experimental, must be activated in user profile)
 - Display existing URL redirects in the alias view
+- Specify the percentage of content created with artificial intelligence (AI)
 
 ### An outlook on further functions
 - At least 30 additional tests for on-page recommendations
diff --git a/contao/dca/tl_content.php b/contao/dca/tl_content.php
new file mode 100644
index 0000000..9162b68
--- /dev/null
+++ b/contao/dca/tl_content.php
@@ -0,0 +1,30 @@
+<?php
+
+use Contao\CoreBundle\DataContainer\PaletteManipulator;
+
+PaletteManipulator::create()
+    // apply the field "custom_field" after the field "username"
+    ->addField('pdirSeoAiUsage', 'text')
+    ->addField('pdirSeoAiSource', 'text')
+
+    // now the field is registered in the PaletteManipulator
+    // but it still has to be registered in the globals array:
+    ->applyToPalette('text', 'tl_content')
+    ->applyToPalette('html', 'tl_content')
+;
+
+$GLOBALS['TL_DCA']['tl_content']['fields']['pdirSeoAiUsage'] = [
+    'filter' => true,
+    'inputType' => 'select',
+    'options' => ['100%', '75%', '50%', '25%', '0%'],
+    'eval' => ['chosen'=>true, 'tl_class'=>'w25'],
+    'sql' => ['type' => 'string', 'length' => 64, 'default' => '0%']
+];
+
+$GLOBALS['TL_DCA']['tl_content']['fields']['pdirSeoAiSource'] = [
+    'filter' => true,
+    'inputType' => 'select',
+    'options' => &$GLOBALS['TL_LANG']['tl_content']['pdirSeoAiSources'],
+    'eval' => ['chosen'=>true, 'tl_class'=>'w25', 'includeBlankOption'=>true],
+    'sql' => ['type' => 'string', 'length' => 128, 'default' => '']
+];
diff --git a/contao/languages/de/tl_content.php b/contao/languages/de/tl_content.php
new file mode 100644
index 0000000..b2b93a0
--- /dev/null
+++ b/contao/languages/de/tl_content.php
@@ -0,0 +1,31 @@
+<?php
+
+declare(strict_types=1);
+
+$GLOBALS['TL_LANG']['tl_content']['pdirSeoAiUsage'] = ['KI Nutzung in %', 'Gib an mit welchen prozentualen Anteil der Inhalt mit künstlicher Intelligenz (KI) erstellt wurde.'];
+$GLOBALS['TL_LANG']['tl_content']['pdirSeoAiSource'] = ['KI Quelle', 'Gib hier die Quelle der künstlichen Intelligenz (KI) an.'];
+
+$GLOBALS['TL_LANG']['tl_content']['pdirSeoAiSources'] = [
+    'chatgpt' => [
+        'ChatGPT 4o',
+        'ChatGPT 4o mini',
+        'GPT-4',
+        'GPT-3.5',
+        'o1-mini',
+        'o1-preview',
+        'ChatGPT 4o with canvas',
+    ],
+    'llm' => [
+        'meta-llama-3.1-8b-instruct'
+    ],
+    'google' => [
+        'Gemini with 1.5 Flash',
+        'Gemini Advanced with 1.5 Pro'
+    ],
+    'microsoft' => [
+        'Copilot'
+    ],
+    'other' => [
+        'Perplexity AI Inc'
+    ]
+];
diff --git a/contao/languages/en/tl_content.php b/contao/languages/en/tl_content.php
new file mode 100644
index 0000000..1f9eee8
--- /dev/null
+++ b/contao/languages/en/tl_content.php
@@ -0,0 +1,31 @@
+<?php
+
+declare(strict_types=1);
+
+$GLOBALS['TL_LANG']['tl_content']['pdirSeoAiUsage'] = ['AI usage in %', 'Specify the percentage of content created with artificial intelligence (AI)'];
+$GLOBALS['TL_LANG']['tl_content']['pdirSeoAiSource'] = ['AI Source', 'Specify the source of the artificial intelligence (AI) here'];
+
+$GLOBALS['TL_LANG']['tl_content']['pdirSeoAiSources'] = [
+    'chatgpt' => [
+        'ChatGPT 4o',
+        'ChatGPT 4o mini',
+        'GPT-4',
+        'GPT-3.5',
+        'o1-mini',
+        'o1-preview',
+        'ChatGPT 4o with canvas',
+    ],
+    'llm' => [
+        'meta-llama-3.1-8b-instruct'
+    ],
+    'google' => [
+        'Gemini with 1.5 Flash',
+        'Gemini Advanced with 1.5 Pro'
+    ],
+    'microsoft' => [
+        'Copilot'
+    ],
+    'other' => [
+        'Perplexity AI Inc'
+    ]
+];