diff --git a/apps/article/serializers_admin.py b/apps/article/serializers_admin.py
index 201807e..fb4e028 100644
--- a/apps/article/serializers_admin.py
+++ b/apps/article/serializers_admin.py
@@ -1,6 +1,7 @@
 from rest_framework import serializers
 from django.core.files.uploadedfile import SimpleUploadedFile
 from utils.image_compression import maybe_compress_uploaded_file
+from utils import absolute_https_url
 
 from .models import Article, ArticleCategory, ArticleCollection, ArticleContent, ContentPart, TextSection
 
@@ -23,9 +24,7 @@ class AbsoluteImageField(serializers.ImageField):
             return None
         request = self.context.get("request")
         url = value.url if hasattr(value, "url") else str(value)
-        if request:
-            return request.build_absolute_uri(url)
-        return url
+        return absolute_https_url(url, request)
 
 
 class AbsoluteFileField(serializers.FileField):
diff --git a/apps/hadis/serializers/serializers_admin.py b/apps/hadis/serializers/serializers_admin.py
index 0ff0752..8f4aeb9 100644
--- a/apps/hadis/serializers/serializers_admin.py
+++ b/apps/hadis/serializers/serializers_admin.py
@@ -2,6 +2,7 @@ from rest_framework import serializers
 from django.core.files.uploadedfile import SimpleUploadedFile
 
 from utils.image_compression import maybe_compress_uploaded_file
+from utils import absolute_https_url
 from ..models import (
     Hadis, HadisCategory, HadisStatus, HadisTag, HadisCorrection, HadisInterpretation, HadisCollection, HadisSect, HadisInCollection, HadisTransmitter, HadisReference,
     BookReference, BookReferenceImage, BookReferenceDocument, BookAuthor, BookAttribute, BookSubjectArea, BookType, BookEdition, BookVolume, BookResearcher, BookEditor,
@@ -33,9 +34,7 @@ class AbsoluteImageField(serializers.ImageField):
             return None
         request = self.context.get("request")
         url = value.url if hasattr(value, "url") else str(value)
-        if request:
-            return request.build_absolute_uri(url)
-        return url
+        return absolute_https_url(url, request)
 
 
 class AdminHadisCategorySerializer(serializers.ModelSerializer):
diff --git a/apps/library/serializers_admin.py b/apps/library/serializers_admin.py
index 7025282..5337135 100644
--- a/apps/library/serializers_admin.py
+++ b/apps/library/serializers_admin.py
@@ -1,6 +1,7 @@
 from rest_framework import serializers
 from django.core.files.uploadedfile import SimpleUploadedFile
 from utils.image_compression import maybe_compress_uploaded_file
+from utils import absolute_https_url
 
 from .models import Author, Book, BookCollection, Category
 
@@ -23,9 +24,7 @@ class AbsoluteImageField(serializers.ImageField):
             return None
         request = self.context.get("request")
         url = value.url if hasattr(value, "url") else str(value)
-        if request:
-            return request.build_absolute_uri(url)
-        return url
+        return absolute_https_url(url, request)
 
 
 class AbsoluteFileField(serializers.FileField):
diff --git a/apps/podcast/serializers_admin.py b/apps/podcast/serializers_admin.py
index 043e757..7dd7104 100644
--- a/apps/podcast/serializers_admin.py
+++ b/apps/podcast/serializers_admin.py
@@ -1,6 +1,7 @@
 from rest_framework import serializers
 from django.core.files.uploadedfile import SimpleUploadedFile
 from utils.image_compression import maybe_compress_uploaded_file
+from utils import absolute_https_url
 
 from .models import PlaylistItem, Podcast, PodcastCategory, PodcastCollection, PodcastPlaylist
 
@@ -23,9 +24,7 @@ class AbsoluteImageField(serializers.ImageField):
             return None
         request = self.context.get("request")
         url = value.url if hasattr(value, "url") else str(value)
-        if request:
-            return request.build_absolute_uri(url)
-        return url
+        return absolute_https_url(url, request)
 
 
 class AbsoluteFileField(serializers.FileField):
diff --git a/apps/video/serializers_admin.py b/apps/video/serializers_admin.py
index 3758426..fd73d08 100644
--- a/apps/video/serializers_admin.py
+++ b/apps/video/serializers_admin.py
@@ -1,6 +1,7 @@
 from rest_framework import serializers
 from django.core.files.uploadedfile import SimpleUploadedFile
 from utils.image_compression import maybe_compress_uploaded_file
+from utils import absolute_https_url
 
 from .models import PlaylistItem, Video, VideoCategory, VideoCollection, VideoPlaylist
 
@@ -23,9 +24,7 @@ class AbsoluteImageField(serializers.ImageField):
             return None
         request = self.context.get("request")
         url = value.url if hasattr(value, "url") else str(value)
-        if request:
-            return request.build_absolute_uri(url)
-        return url
+        return absolute_https_url(url, request)
 
 
 class AbsoluteFileField(serializers.FileField):
diff --git a/utils/__init__.py b/utils/__init__.py
index b6d9016..36941ce 100644
--- a/utils/__init__.py
+++ b/utils/__init__.py
@@ -36,6 +36,17 @@ from utils.image_compression import maybe_compress_uploaded_file
 
 logger = logging.getLogger(__name__)
 
+
+def absolute_https_url(url, request=None):
+    """Build an absolute URL and always expose it over HTTPS."""
+    if request:
+        url = request.build_absolute_uri(url)
+
+    if isinstance(url, str) and url.startswith('http://'):
+        return f'https://{url[7:]}'
+
+    return url
+
 # Moved filer imports to avoid circular imports
 # These will be imported when needed in functions
 
@@ -63,12 +74,7 @@ def get_thumbs(obj, request: HttpRequest = None) -> dict:
         
         # برای هر سه سایز، همان URL اصلی را برگردان
         for size in sizes:
-            if request:
-                url = request.build_absolute_uri(original_url)
-            else:
-                url = original_url
-            
-            thumbnail_object[size] = url
+            thumbnail_object[size] = absolute_https_url(original_url, request)
 
         return thumbnail_object