diff --git a/app/Services/CertificateService.php b/app/Services/CertificateService.php
index 35037cb..55172f6 100644
--- a/app/Services/CertificateService.php
+++ b/app/Services/CertificateService.php
@@ -44,6 +44,7 @@ class CertificateService
 
             if (isset($fields['name'])) {
                 $this->writeText($image, $certificate->participant->name, $fields['name']);
+                $this->writeIcBelow($image, $certificate->participant->no_kp, $fields['name']);
             }
 
             if (isset($fields['certificate_no']) && $certificate->certificate_no) {
@@ -71,7 +72,7 @@ class CertificateService
         }
     }
 
-    public function generatePreview(CertificateTemplate $template, string $sampleName, string $sampleNo = '', ?array $overrideFields = null): string
+    public function generatePreview(CertificateTemplate $template, string $sampleName, string $sampleNo = '', ?array $overrideFields = null, string $sampleIc = '800808-08-8888'): string
     {
         $templatePath = Storage::disk('local')->path($template->image_path);
         $image  = $this->manager->decodePath($templatePath);
@@ -79,6 +80,7 @@ class CertificateService
 
         if (isset($fields['name'])) {
             $this->writeText($image, $sampleName, $fields['name']);
+            $this->writeIcBelow($image, $sampleIc, $fields['name']);
         }
 
         if (isset($fields['certificate_no'])) {
@@ -88,6 +90,22 @@ class CertificateService
         return $image->encode(new JpegEncoder(85))->toString();
     }
 
+    // Tulis IC di bawah nama — auto-posisi, font 50% nama
+    private function writeIcBelow(\Intervention\Image\Interfaces\ImageInterface $image, string $ic, array $nameCfg): void
+    {
+        $nameFontSize = (int) ($nameCfg['font_size'] ?? 48);
+        $icFontSize   = (int) round($nameFontSize * 0.5);
+
+        // Y offset: line height nama (1.4×) + sedikit jarak
+        $icY = (int) ($nameCfg['y'] ?? 0) + (int) round($nameFontSize * 1.5);
+
+        $this->writeText($image, $ic, array_merge($nameCfg, [
+            'font_size'  => $icFontSize,
+            'y'          => $icY,
+            'font_file'  => $nameCfg['font_file'] ?? 'DejaVuSans.ttf',
+        ]));
+    }
+
     private function writeText(\Intervention\Image\Interfaces\ImageInterface $image, string $text, array $cfg): void
     {
         $fontFile  = $this->resolveFontPath($cfg['font_file'] ?? 'DejaVuSans-Bold.ttf');