diff --git a/resources/js/components/certificate-generator.tsx b/resources/js/components/certificate-generator.tsx
index b14ba79e..2bbd99e4 100644
--- a/resources/js/components/certificate-generator.tsx
+++ b/resources/js/components/certificate-generator.tsx
@@ -20,7 +20,7 @@ const CertificateGenerator = () => {
 
    const handleGenerateCertificate = async () => {
       if (!studentName || !courseName || !completionDate) {
-         toast.error('Please fill in all required fields.');
+         toast.error('Bitte fülle alle Pflichtfelder aus.');
          return;
       }
 
@@ -28,8 +28,8 @@ const CertificateGenerator = () => {
 
       // Simulate certificate generation
       setTimeout(() => {
-         setIsGenerating(false);
-         toast.success('Your course completion certificate has been created successfully.');
+          setIsGenerating(false);
+          toast.success('Dein Kursabschlusszertifikat wurde erfolgreich erstellt.');
       }, 2000);
    };
 
@@ -73,7 +73,7 @@ const CertificateGenerator = () => {
          document.body.removeChild(a);
          URL.revokeObjectURL(url);
 
-         toast.success('Your PNG certificate has been saved to your downloads folder.');
+         toast.success('Dein PNG-Zertifikat wurde in deinem Download-Ordner gespeichert.');
       }, 'image/png');
    };
 
@@ -107,7 +107,7 @@ const CertificateGenerator = () => {
       // Save the PDF
       pdf.save(`${studentName}_${courseName}_Certificate.pdf`);
 
-      toast.success('Your PDF certificate has been saved to your downloads folder.');
+      toast.success('Dein PDF-Zertifikat wurde in deinem Download-Ordner gespeichert.');
    };
 
    const drawCertificate = (ctx: CanvasRenderingContext2D, dimensions: { width: number; height: number }) => {
@@ -135,7 +135,7 @@ const CertificateGenerator = () => {
 
       // Title
       ctx.font = 'bold 42px serif';
-      ctx.fillText('Certificate of Completion', dimensions.width / 2, 120);
+      ctx.fillText('Abschlusszertifikat', dimensions.width / 2, 120);
 
       // Decorative line under title
       ctx.strokeStyle = '#f59e0b';
@@ -148,7 +148,7 @@ const CertificateGenerator = () => {
       // "This is to certify that"
       ctx.font = '22px serif';
       ctx.fillStyle = '#4b5563';
-      ctx.fillText('This is to certify that', dimensions.width / 2, 190);
+      ctx.fillText('Hiermit wird bescheinigt, dass', dimensions.width / 2, 190);
 
       // Student name with underline
       ctx.font = 'bold 36px serif';
@@ -167,7 +167,7 @@ const CertificateGenerator = () => {
       // "has successfully completed the course"
       ctx.font = '22px serif';
       ctx.fillStyle = '#4b5563';
-      ctx.fillText('has successfully completed the course', dimensions.width / 2, 320);
+      ctx.fillText('den Kurs erfolgreich abgeschlossen hat', dimensions.width / 2, 320);
 
       // Course name
       ctx.font = 'bold 28px serif';
@@ -177,7 +177,7 @@ const CertificateGenerator = () => {
       // Completion date
       ctx.font = '18px serif';
       ctx.fillStyle = '#6b7280';
-      ctx.fillText(`Completed on: ${completionDate}`, dimensions.width / 2, 430);
+      ctx.fillText(`Abgeschlossen am: ${completionDate}`, dimensions.width / 2, 430);
 
       // Footer
       ctx.font = '16px serif';
@@ -190,9 +190,9 @@ const CertificateGenerator = () => {
    return (
       <div className="space-y-8">
          <div className="text-center">
-            <h1 className="mb-4 text-4xl font-bold text-gray-800">Course Certificate Generator</h1>
-            <p className="text-muted-foreground text-lg">Generate your official course completion certificate</p>
-         </div>
+            <h1 className="mb-4 text-4xl font-bold text-gray-800">Zertifikatsgenerator</h1>
+            <p className="text-muted-foreground text-lg">Erstelle dein offizielles Kursabschlusszertifikat</p>
+            </div>
 
          <div className="grid grid-cols-1 gap-8 lg:grid-cols-2">
             {/* Form Section */}
@@ -200,23 +200,23 @@ const CertificateGenerator = () => {
                <CardHeader>
                   <CardTitle className="flex items-center gap-2">
                      <Award className="h-5 w-5 text-amber-600" />
-                     Certificate Details
+                     Zertifikatsdetails
                   </CardTitle>
                </CardHeader>
                <CardContent className="space-y-6">
                   <div className="space-y-2">
-                     <Label htmlFor="studentName">Student Name *</Label>
+                     <Label htmlFor="studentName">Name des Teilnehmers *</Label>
                      <Input
                         id="studentName"
                         value={studentName}
                         onChange={(e) => setStudentName(e.target.value)}
-                        placeholder="Enter your full name"
+                        placeholder="Gib deinen vollständigen Namen ein"
                      />
                   </div>
 
                   <div className="space-y-2">
-                     <Label htmlFor="courseName">Course Name *</Label>
-                     <Input id="courseName" value={courseName} onChange={(e) => setCourseName(e.target.value)} placeholder="Enter the course name" />
+                     <Label htmlFor="courseName">Kursname *</Label>
+                     <Input id="courseName" value={courseName} onChange={(e) => setCourseName(e.target.value)} placeholder="Gib den Kursnamen ein" />
                   </div>
 
                   <div className="space-y-2">
@@ -232,33 +232,33 @@ const CertificateGenerator = () => {
 
                   <div className="space-y-4">
                      <div className="space-y-2">
-                        <Label>Certificate Size</Label>
+                        <Label>Zertifikatsgröße</Label>
                         <Select value={certificateSize} onValueChange={setCertificateSize}>
                            <SelectTrigger>
-                              <SelectValue placeholder="Select certificate size" />
+                             <SelectValue placeholder="Wähle Zertifikatsgröße" />
                            </SelectTrigger>
                            <SelectContent>
-                              <SelectItem value="standard">Standard (800x600)</SelectItem>
-                              <SelectItem value="a4">A4 Landscape (842x595)</SelectItem>
+                             <SelectItem value="standard">Standard (800×600)</SelectItem>
+                             <SelectItem value="a4">A4 Querformat (842×595)</SelectItem>
                            </SelectContent>
                         </Select>
                      </div>
 
                      <div className="space-y-3">
-                        <Label>Download Format</Label>
+                        <Label>Download-Format</Label>
                         <RadioGroup value={downloadFormat} onValueChange={setDownloadFormat} className="flex space-x-6">
                            <div className="flex items-center space-x-2">
                               <RadioGroupItem className="cursor-pointer" value="png" id="png" />
                               <Label htmlFor="png" className="flex cursor-pointer items-center gap-2">
                                  <FileImage className="h-4 w-4" />
-                                 PNG Image
+                                 PNG-Bild
                               </Label>
                            </div>
                            <div className="flex items-center space-x-2">
                               <RadioGroupItem className="cursor-pointer" value="pdf" id="pdf" />
                               <Label htmlFor="pdf" className="flex cursor-pointer items-center gap-2">
                                  <FileText className="h-4 w-4" />
-                                 PDF Document
+                                 PDF-Dokument
                               </Label>
                            </div>
                         </RadioGroup>
@@ -269,12 +269,12 @@ const CertificateGenerator = () => {
                      {isGenerating ? (
                         <>
                            <div className="mr-2 h-4 w-4 animate-spin rounded-full border-b-2 border-white" />
-                           Generating Certificate...
+                           Zertifikat wird erstellt...
                         </>
                      ) : (
                         <>
                            <Award className="mr-2 h-4 w-4" />
-                           Generate Certificate
+                           Zertifikat erstellen
                         </>
                      )}
                   </Button>
@@ -284,7 +284,7 @@ const CertificateGenerator = () => {
             {/* Preview Section */}
             <Card>
                <CardHeader>
-                  <CardTitle>Certificate Preview</CardTitle>
+                  <CardTitle>Zertifikatsvorschau</CardTitle>
                </CardHeader>
                <CardContent>
                   <div
@@ -297,26 +297,26 @@ const CertificateGenerator = () => {
                      <div className="relative z-10">
                         <div className="mb-6">
                            <Award className="mx-auto mb-3 h-12 w-12 text-amber-600" />
-                           <h2 className="mb-2 font-serif text-2xl font-bold text-gray-800">Certificate of Completion</h2>
+                           <h2 className="mb-2 font-serif text-2xl font-bold text-gray-800">Abschlusszertifikat</h2>
                            <div className="mx-auto h-0.5 w-32 bg-amber-400"></div>
                         </div>
 
                         <div className="space-y-4 text-gray-700">
-                           <p className="font-serif text-lg">This is to certify that</p>
+                           <p className="font-serif text-lg">Hiermit wird bescheinigt, dass</p>
                            <div className="relative">
                               <p className="mx-8 pb-2 font-serif text-2xl font-bold text-indigo-800">{studentName || 'Student Name'}</p>
                               <div className="absolute bottom-0 left-1/2 h-0.5 w-48 -translate-x-1/2 transform bg-amber-400"></div>
                            </div>
-                           <p className="font-serif text-lg">has successfully completed the course</p>
-                           <p className="font-serif text-xl font-semibold text-indigo-700">{courseName || 'Course Name'}</p>
+                           <p className="font-serif text-lg">den Kurs erfolgreich abgeschlossen hat</p>
+                           <p className="font-serif text-xl font-semibold text-indigo-700">{courseName || 'Kursname'}</p>
                            <div className="mt-6 flex items-center justify-center gap-2">
                               <Calendar className="text-muted-foreground h-4 w-4" />
-                              <p className="text-muted-foreground font-serif text-sm">Completed on: {completionDate || 'Date'}</p>
+                              <p className="text-muted-foreground font-serif text-sm">Abgeschlossen am: {completionDate || 'Datum'}</p>
                            </div>
                         </div>
 
                         <div className="mt-6 border-t border-amber-400 pt-4">
-                           <p className="font-serif text-sm text-gray-500">Authorized Certificate of Achievement</p>
+                           <p className="font-serif text-sm text-gray-500">Autorisierte Leistungsurkunde</p>
                         </div>
                      </div>
                   </div>
@@ -324,7 +324,7 @@ const CertificateGenerator = () => {
                   {studentName && courseName && completionDate && (
                      <Button variant="outline" className="mt-4 w-full" onClick={handleDownloadCertificate}>
                         <Download className="mr-2 h-4 w-4" />
-                        Download as {downloadFormat.toUpperCase()}
+                        Herunterladen als {downloadFormat.toUpperCase()}
                      </Button>
                   )}
                </CardContent>
diff --git a/resources/js/pages/course-player/partials/content-list.tsx b/resources/js/pages/course-player/partials/content-list.tsx
index d76e0086..b8742d0c 100644
--- a/resources/js/pages/course-player/partials/content-list.tsx
+++ b/resources/js/pages/course-player/partials/content-list.tsx
@@ -28,7 +28,7 @@ interface ContentListProps {
 const ContentList = ({ completedContents, courseCompletion }: ContentListProps) => {
    const { props } = usePage<CoursePlayerProps>();
    const { course, zoomConfig, section, watchHistory, translate, direction } = props;
-   const { button, common } = translate;
+   const { button, common, frontend } = translate;
 
    // Get live classes from course data
    const liveClasses = course.live_classes || [];
@@ -119,7 +119,7 @@ const ContentList = ({ completedContents, courseCompletion }: ContentListProps)
                                  })}
                               >
                                  <Button className="w-full" variant="secondary" size="lg" disabled={courseCompletion.percentage !== '100.00'}>
-                                    Course Certificate
+                                    {frontend.course_certificate}
                                  </Button>
                               </Link>
                            </div>
@@ -127,11 +127,11 @@ const ContentList = ({ completedContents, courseCompletion }: ContentListProps)
                            <div>
                               {!watchHistory.next_watching_id ? (
                                  <Button className="w-full" variant="secondary" size="lg" onClick={finishCourseHandler}>
-                                    Finish Course
+                                    Kurs abschließen
                                  </Button>
                               ) : (
-                                 <Button className="w-full" variant="secondary" size="lg" disabled>
-                                    Finish Course
+                                    <Button className="w-full" variant="secondary" size="lg" disabled>
+                                    Kurs abschließen
                                  </Button>
                               )}
                            </div>
diff --git a/resources/js/pages/courses/partials/course-preview.tsx b/resources/js/pages/courses/partials/course-preview.tsx
index 9bb7f30f..563acb34 100644
--- a/resources/js/pages/courses/partials/course-preview.tsx
+++ b/resources/js/pages/courses/partials/course-preview.tsx
@@ -117,7 +117,7 @@ const CoursePreview = () => {
                   <Mail className="h-5 w-5" />
                   {frontend.certificate_included}
                </span>
-               <span>Yes</span>
+               <span>{course.certificate_included ? 'Ja' : 'Nein'}</span>
             </div>
          </div>
       </div>