diff --git a/Output.php b/Output.php
index 2323ee5..e8b1113 100644
--- a/Output.php
+++ b/Output.php
@@ -83,7 +83,7 @@ class Output
 
         /** @var \Doku_Renderer_xhtml $renderer */
         $renderer = $this->renderer;
-        $renderer->doc .= '<div class="filetools-plugin filetools-gallery">';
+        $renderer->doc .= '<div class="luxtools-plugin luxtools-gallery">';
 
         foreach ($this->files as $item) {
             $url = $this->itemWebUrl($item, !empty($params['randlinks']));
@@ -228,7 +228,7 @@ class Output
         }
 
         $style = $this->containerStyle($params);
-        $this->renderer->doc .= '<div class="filetools-plugin"' . $style . '>';
+        $this->renderer->doc .= '<div class="luxtools-plugin"' . $style . '>';
     }
 
     /**
@@ -473,8 +473,8 @@ class Output
 
         $noIcon = !empty($item['noicon']);
         $link['class'] = $noIcon
-            ? 'filetools-open'
-            : 'filetools-open media mediafile mf_folder';
+            ? 'luxtools-open'
+            : 'luxtools-open media mediafile mf_folder';
 
         $link['more'] .= ' data-path="' . hsc($path) . '"';
         if ($conf['relnofollow']) $link['more'] .= ' rel="nofollow"';
diff --git a/_test/SyntaxTest.php b/_test/SyntaxTest.php
index 3f3dfed..20d757b 100644
--- a/_test/SyntaxTest.php
+++ b/_test/SyntaxTest.php
@@ -126,14 +126,14 @@ class plugin_luxtools_test extends DokuWikiTest
         $doc->html($xhtml);
 
         $structure = [
-            'div.filetools-plugin' => 1,
-            'div.filetools-plugin > ul' => 1,
-            'div.filetools-plugin > ul > li' => 3,
-            'div.filetools-plugin > ul > li:nth-child(1)' => 1,
-            'div.filetools-plugin > ul > li:nth-child(1) a' => 'example.txt',
-            'div.filetools-plugin > ul > li:nth-child(2) ul' => 1,
-            'div.filetools-plugin > ul > li:nth-child(2) ul > li' => 1,
-            'div.filetools-plugin > ul > li:nth-child(2) ul > li a' => 'example2.txt',
+            'div.luxtools-plugin' => 1,
+            'div.luxtools-plugin > ul' => 1,
+            'div.luxtools-plugin > ul > li' => 3,
+            'div.luxtools-plugin > ul > li:nth-child(1)' => 1,
+            'div.luxtools-plugin > ul > li:nth-child(1) a' => 'example.txt',
+            'div.luxtools-plugin > ul > li:nth-child(2) ul' => 1,
+            'div.luxtools-plugin > ul > li:nth-child(2) ul > li' => 1,
+            'div.luxtools-plugin > ul > li:nth-child(2) ul > li a' => 'example2.txt',
         ];
 
         $this->structureCheck($doc, $structure);
@@ -153,14 +153,14 @@ class plugin_luxtools_test extends DokuWikiTest
         $doc->html($xhtml);
 
         $structure = [
-            'div.filetools-plugin' => 1,
-            'div.filetools-plugin > ol' => 1,
-            'div.filetools-plugin > ol > li' => 3,
-            'div.filetools-plugin > ol > li:nth-child(1)' => 1,
-            'div.filetools-plugin > ol > li:nth-child(1) a' => 'example.txt',
-            'div.filetools-plugin > ol > li:nth-child(2) ol' => 1,
-            'div.filetools-plugin > ol > li:nth-child(2) ol > li' => 1,
-            'div.filetools-plugin > ol > li:nth-child(2) ol > li a' => 'example2.txt',
+            'div.luxtools-plugin' => 1,
+            'div.luxtools-plugin > ol' => 1,
+            'div.luxtools-plugin > ol > li' => 3,
+            'div.luxtools-plugin > ol > li:nth-child(1)' => 1,
+            'div.luxtools-plugin > ol > li:nth-child(1) a' => 'example.txt',
+            'div.luxtools-plugin > ol > li:nth-child(2) ol' => 1,
+            'div.luxtools-plugin > ol > li:nth-child(2) ol > li' => 1,
+            'div.luxtools-plugin > ol > li:nth-child(2) ol > li a' => 'example2.txt',
         ];
 
         $this->structureCheck($doc, $structure);
@@ -182,12 +182,12 @@ class plugin_luxtools_test extends DokuWikiTest
         $doc->html($xhtml);
 
         $structure = [
-            'div.filetools-plugin' => 1,
-            'div.filetools-plugin table' => 1,
-            'div.filetools-plugin table > tbody > tr' => 3,
-            'div.filetools-plugin table > tbody > tr:nth-child(1) a' => 'example.txt',
-            'div.filetools-plugin table > tbody > tr:nth-child(2) a' => 'exampledir/example2.txt',
-            'div.filetools-plugin table > tbody > tr:nth-child(3) a' => 'exampleimage.png',
+            'div.luxtools-plugin' => 1,
+            'div.luxtools-plugin table' => 1,
+            'div.luxtools-plugin table > tbody > tr' => 3,
+            'div.luxtools-plugin table > tbody > tr:nth-child(1) a' => 'example.txt',
+            'div.luxtools-plugin table > tbody > tr:nth-child(2) a' => 'exampledir/example2.txt',
+            'div.luxtools-plugin table > tbody > tr:nth-child(3) a' => 'exampleimage.png',
         ];
 
         $this->structureCheck($doc, $structure);
@@ -201,7 +201,7 @@ class plugin_luxtools_test extends DokuWikiTest
         $doc = new Document();
         $doc->html($xhtml);
 
-        $style = (string)$doc->find('div.filetools-plugin')->attr('style');
+        $style = (string)$doc->find('div.luxtools-plugin')->attr('style');
 
         $this->assertStringContainsString('max-height: 500px', $style);
         $this->assertStringContainsString('overflow-y: auto', $style);
@@ -215,7 +215,7 @@ class plugin_luxtools_test extends DokuWikiTest
         $doc = new Document();
         $doc->html($xhtml);
 
-        $style = $doc->find('div.filetools-plugin')->attr('style');
+        $style = $doc->find('div.luxtools-plugin')->attr('style');
 
         $this->assertTrue($style === null || $style === '');
     }
@@ -232,9 +232,9 @@ class plugin_luxtools_test extends DokuWikiTest
         $doc->html($xhtml);
 
         $structure = [
-            'div.filetools-plugin.filetools-gallery' => 1,
-            'div.filetools-plugin.filetools-gallery a' => 1,
-            'div.filetools-plugin.filetools-gallery img' => 1,
+            'div.luxtools-plugin.luxtools-gallery' => 1,
+            'div.luxtools-plugin.luxtools-gallery a' => 1,
+            'div.luxtools-plugin.luxtools-gallery img' => 1,
         ];
         $this->structureCheck($doc, $structure);
 
@@ -256,7 +256,7 @@ class plugin_luxtools_test extends DokuWikiTest
         $doc->html($xhtml);
 
         $structure = [
-            'button.filetools-open' => 1,
+            'button.luxtools-open' => 1,
         ];
         $this->structureCheck($doc, $structure);
 
@@ -277,10 +277,10 @@ class plugin_luxtools_test extends DokuWikiTest
         $doc->html($xhtml);
 
         $structure = [
-            'div.filetools-plugin' => 1,
-            'div.filetools-plugin table' => 1,
-            'div.filetools-plugin table > tbody > tr' => 3,
-            'a.filetools-open' => 1,
+            'div.luxtools-plugin' => 1,
+            'div.luxtools-plugin table' => 1,
+            'div.luxtools-plugin table > tbody > tr' => 3,
+            'a.luxtools-open' => 1,
         ];
         $this->structureCheck($doc, $structure);
 
diff --git a/conf/default.php b/conf/default.php
index 8d40d92..0be1507 100644
--- a/conf/default.php
+++ b/conf/default.php
@@ -1,7 +1,7 @@
 <?php
 
 /**
- * Options for the filetools plugin
+ * Options for the luxtools plugin
  */
 
 $conf['paths'] = '';
@@ -16,6 +16,6 @@ $conf['thumb_placeholder'] = ':wiki:thumb-placeholder.png';
 // Thumbnails are still displayed as 150x150 on the page.
 $conf['gallery_thumb_scale'] = 1;
 
-// Local opener service used by {{open>...}}.
+// Local client service used by {{open>...}}.
 $conf['open_service_url'] = 'http://127.0.0.1:8765';
 $conf['open_service_token'] = '';
diff --git a/conf/metadata.php b/conf/metadata.php
index c3f09e2..a2069de 100644
--- a/conf/metadata.php
+++ b/conf/metadata.php
@@ -2,7 +2,7 @@
 
 /**
  * Metadata for configuration manager plugin
- * Additions for the filetools plugin
+ * Additions for the luxtools plugin
  *
  * @author Gina Haeussge <osd@foosel.net>
  */
diff --git a/lang/de/settings.php b/lang/de/settings.php
index 382fe98..4a6fbc1 100644
--- a/lang/de/settings.php
+++ b/lang/de/settings.php
@@ -6,5 +6,5 @@ $lang['thumb_placeholder'] = 'MediaManager-ID für den Platzhalter der Galerie-T
 
 $lang['gallery_thumb_scale'] = 'Skalierungsfaktor für Galerie-Thumbnails. 2 erzeugt schärfere Thumbnails auf HiDPI-Displays (Anzeige bleibt 150×150).';
 
-$lang['open_service_url'] = 'URL des lokalen Öffner-Dienstes für {{open>...}} (z.B. http://127.0.0.1:8765).';
-$lang['open_service_token'] = 'Token für den lokalen Öffner-Dienst (X-Filetools-Token).';
+$lang['open_service_url'] = 'URL des lokalen Client-Dienstes für {{open>...}} (z.B. http://127.0.0.1:8765).';
+$lang['open_service_token'] = 'Token für den lokalen Client-Dienst (X-Luxtools-Token).';
diff --git a/lang/en/settings.php b/lang/en/settings.php
index a87722d..4e9b18c 100644
--- a/lang/en/settings.php
+++ b/lang/en/settings.php
@@ -8,5 +8,5 @@ $lang['thumb_placeholder'] = 'MediaManager ID for the gallery thumbnail placehol
 
 $lang['gallery_thumb_scale'] = 'Gallery thumbnail scale factor. Use 2 for sharper thumbnails on HiDPI screens (still displayed as 150×150).';
 
-$lang['open_service_url'] = 'Local opener service URL for the {{open>...}} button (e.g. http://127.0.0.1:8765).';
-$lang['open_service_token'] = 'Token sent to the local opener service (X-Filetools-Token).';
+$lang['open_service_url'] = 'Local client service URL for the {{open>...}} button (e.g. http://127.0.0.1:8765).';
+$lang['open_service_token'] = 'Token sent to the local client service (X-Luxtools-Token).';
diff --git a/script.js b/script.js
index ebafb4c..0e8526d 100644
--- a/script.js
+++ b/script.js
@@ -4,7 +4,7 @@
   'use strict';
 
   function initGalleryThumbs() {
-    var imgs = document.querySelectorAll('div.filetools-gallery img[data-thumb-src]');
+    var imgs = document.querySelectorAll('div.luxtools-gallery img[data-thumb-src]');
     if (!imgs || !imgs.length) return;
 
     function loadThumb(img) {
@@ -75,13 +75,13 @@
 
   function openViaService(el, rawPath) {
     var baseUrl = getServiceUrl(el);
-    if (!baseUrl) return Promise.reject(new Error('No opener service configured'));
+    if (!baseUrl) return Promise.reject(new Error('No client service configured'));
 
     var headers = {
       'Content-Type': 'application/json'
     };
     var token = getServiceToken(el);
-    if (token) headers['X-Filetools-Token'] = token;
+    if (token) headers['X-Luxtools-Token'] = token;
 
     return window.fetch(baseUrl + '/open', {
       method: 'POST',
@@ -131,12 +131,12 @@
 
   function onClick(event) {
     var el = event.target;
-    if (!el || !el.classList || !el.classList.contains('filetools-open')) return;
+    if (!el || !el.classList || !el.classList.contains('luxtools-open')) return;
 
     var raw = el.getAttribute('data-path') || '';
     if (!raw) return;
 
-    // Prefer local opener service.
+    // Prefer local client service.
     openViaService(el, raw)
       .catch(function (err) {
         // If the browser blocks the request before it reaches localhost (mixed-content,
@@ -146,7 +146,7 @@
         // Fallback to old behavior (often blocked in modern browsers).
         var url = normalizeToFileUrl(raw);
         if (!url) return;
-        console.warn('Local opener service failed, falling back to file:// navigation:', err);
+        console.warn('Local client service failed, falling back to file:// navigation:', err);
         try {
           window.open(url, '_blank', 'noopener');
         } catch (e) {
diff --git a/style.css b/style.css
index 6d6d175..d325b44 100644
--- a/style.css
+++ b/style.css
@@ -3,18 +3,18 @@
  */
 
 /* DokuWiki often highlights rows on hover. Avoid highlighting header rows. */
-div.filetools-plugin table thead tr:hover > * {
+div.luxtools-plugin table thead tr:hover > * {
     background-color: @ini_background_alt !important;
 }
 
 
 /* "Open Location" row above the header should be visually smaller. */
-div.filetools-plugin table thead tr.luxtools-openlocation-row td {
+div.luxtools-plugin table thead tr.luxtools-openlocation-row td {
     font-size: 80%;
     padding-top: 0.2em;
     padding-bottom: 0.2em;
 }
-div.filetools-plugin table thead tr.luxtools-openlocation-row:hover td {
+div.luxtools-plugin table thead tr.luxtools-openlocation-row:hover td {
     background-color: @ini_background !important;
 }
 
@@ -25,24 +25,24 @@ div.filetools-plugin table thead tr.luxtools-openlocation-row:hover td {
  * The relative URL is resolved against the plugin directory by DokuWiki's CSS
  * aggregator, resulting in lib/images/fileicons/svg/folder.svg.
  */
-div.filetools-plugin a.media.mediafile.mf_folder,
-div.filetools-plugin a.mediafile.mf_folder {
+div.luxtools-plugin a.media.mediafile.mf_folder,
+div.luxtools-plugin a.mediafile.mf_folder {
     background-image: url(../../images/fileicons/svg/folder.svg) !important;
 }
 
 /* Muted empty-state message when a listing has no results. */
-div.filetools-plugin .luxtools-empty {
+div.luxtools-plugin .luxtools-empty {
     opacity: 0.65;
     font-style: italic;
     padding: 0.25em 0;
 }
 
 /* Image gallery spacing. */
-div.filetools-gallery {
+div.luxtools-gallery {
     padding-bottom: 0.5em;
 }
 
-div.filetools-gallery a.media {
+div.luxtools-gallery a.media {
     display: inline-block;
     margin: 0 0.35em 0.35em 0;
 }
diff --git a/syntax.php b/syntax.php
index 8df6ac7..39cae89 100644
--- a/syntax.php
+++ b/syntax.php
@@ -18,7 +18,7 @@ class syntax_plugin_luxtools extends syntax_plugin_luxtools_files
 }
 
 /**
- * Compatibility alias for older codebases that referenced the legacy class name.
+ * Compatibility alias for older codebases that referenced the legacy FileTools class name.
  *
  * Note: plugin id/base is now `luxtools`.
  */
diff --git a/syntax/AbstractSyntax.php b/syntax/AbstractSyntax.php
index d3e9c8e..3367491 100644
--- a/syntax/AbstractSyntax.php
+++ b/syntax/AbstractSyntax.php
@@ -250,7 +250,7 @@ abstract class syntax_plugin_luxtools_abstract extends SyntaxPlugin
         $text = (string)$this->getLang($langKey);
 
         if ($renderer instanceof \Doku_Renderer_xhtml) {
-            $renderer->doc .= '<div class="filetools-plugin"><div class="luxtools-empty">' . hsc($text) . '</div></div>';
+            $renderer->doc .= '<div class="luxtools-plugin"><div class="luxtools-empty">' . hsc($text) . '</div></div>';
             return;
         }
 
diff --git a/syntax/open.php b/syntax/open.php
index 9c58b8d..9747a00 100644
--- a/syntax/open.php
+++ b/syntax/open.php
@@ -76,7 +76,7 @@ class syntax_plugin_luxtools_open extends SyntaxPlugin
         $serviceUrl = trim((string)$this->getConf('open_service_url'));
         $serviceToken = trim((string)$this->getConf('open_service_token'));
 
-        $attrs = ' type="button" class="filetools-open"'
+        $attrs = ' type="button" class="luxtools-open"'
             . ' data-path="' . hsc($path) . '"';
         if ($serviceUrl !== '') {
             $attrs .= ' data-service-url="' . hsc($serviceUrl) . '"';