diff --git a/gallery/admin.py b/gallery/admin.py
index b6398eb..77cd388 100644
--- a/gallery/admin.py
+++ b/gallery/admin.py
@@ -11,6 +11,7 @@ from imagekit.processors import ResizeToFit
 from gallery.models import Album, City, Location, Photo, Redir
 
 
+# Thumbnail-luokka admin-näkymää varten
 class AdminThumbnailSpec(ImageSpec):
     processors = [ResizeToFit(100, 100)]
     format = 'JPEG'
@@ -18,6 +19,7 @@ class AdminThumbnailSpec(ImageSpec):
 
 
 def cached_admin_thumb(instance):
+    """Palauttaa cachetetun thumbnailin, jos kuva on olemassa."""
     if instance.photo:
         cached = ImageCacheFile(AdminThumbnailSpec(instance.photo))
         cached.generate()
@@ -25,6 +27,7 @@ def cached_admin_thumb(instance):
     return None
 
 
+# 🔹 RedirAdmin – uudelleenohjausten hallinta
 class RedirAdmin(admin.ModelAdmin):
     list_display = ('path', 'album', 'test_url')
     search_fields = ('path',)
@@ -33,18 +36,21 @@ class RedirAdmin(admin.ModelAdmin):
     list_editable = ('album',)
 
     def formfield_for_foreignkey(self, db_field, request, **kwargs):
+        """Järjestää albumivalikon aakkosjärjestykseen."""
         if db_field.name == "album":
             kwargs["queryset"] = Album.objects.all().order_by('name')
         return super().formfield_for_foreignkey(db_field, request, **kwargs)
 
     def test_url(self, obj):
+        """Luo linkin, jolla voi testata uudelleenohjauksen."""
         return format_html(
             '<a href="/{}" target="_blank">http://nyymix.net/{}</a>',
             obj.path, obj.path
         )
-    test_url.short_description = "Test redirection"
+    test_url.short_description = "Test Redirection"
 
 
+# 🔹 CityAdmin – kaupunkien hallinta
 class CityAdmin(admin.ModelAdmin):
     list_display = ('name',)
     search_fields = ('name',)
@@ -52,6 +58,7 @@ class CityAdmin(admin.ModelAdmin):
     list_per_page = 30
 
 
+# 🔹 LocationAdmin – sijaintien hallinta
 class LocationAdmin(admin.ModelAdmin):
     list_display = ('city', 'place')
     list_filter = ('city',)
@@ -60,6 +67,7 @@ class LocationAdmin(admin.ModelAdmin):
     list_per_page = 30
 
 
+# 🔹 AlbumAdmin – albumien hallinta
 class AlbumAdmin(admin.ModelAdmin):
     prepopulated_fields = {'slug': ('name',)}
     list_display = ('name', 'location', 'album_date', 'is_public', 'upload_link', 'thumbnail')
@@ -68,10 +76,10 @@ class AlbumAdmin(admin.ModelAdmin):
     list_per_page = 20
     list_editable = ('is_public',)
     readonly_fields = ['cover_preview']
-
     change_form_template = "admin/gallery/album/change_form.html"
 
     def get_urls(self):
+        """Lisää mukautetun URL-reitin valokuvien lataamiselle."""
         urls = super().get_urls()
         custom_urls = [
             path('<int:album_id>/upload/', self.admin_site.admin_view(self.upload_photos), name="gallery_album_upload"),
@@ -84,14 +92,16 @@ class AlbumAdmin(admin.ModelAdmin):
 
         if request.method == 'POST' and request.FILES:
             uploaded_files = request.FILES.getlist('photo')
-            for file in uploaded_files:
-                Photo.objects.create(album=album, photo=file)
+            if not uploaded_files:
+                return JsonResponse({"error": "No files uploaded."}, status=400)
+
+            Photo.objects.bulk_create([Photo(album=album, photo=file) for file in uploaded_files])
             return JsonResponse({"message": "Photos uploaded successfully!"})
 
         return render(request, 'admin/upload_photos.html', {'album': album})
 
     def upload_link(self, obj):
-        """Lisää 'Upload Photos' -painikkeen albumin muokkaussivulle"""
+        """Lisää 'Upload Photos' -painikkeen albumin muokkaussivulle."""
         if obj.id:
             url = reverse("admin:gallery_album_upload", kwargs={"album_id": obj.id})
             return format_html('<a href="{}" class="button">Upload Photos</a>', url)
@@ -99,24 +109,27 @@ class AlbumAdmin(admin.ModelAdmin):
     upload_link.short_description = "Upload Photos"
 
     def thumbnail(self, obj):
+        """Näyttää albumin kansikuvan pikkukuvan."""
         if obj.cover and obj.cover.photo:
             return format_html(
                 '<img src="{}" style="width: 50px; height: auto;"/>',
-                obj.cover.photo.url,
+                obj.cover.photo_sm.url,
             )
         return "-"
     thumbnail.short_description = "Thumbnail"
 
     def cover_preview(self, obj):
+        """Näyttää albumin kansikuvan suurempana esikatseluna."""
         if obj.cover and obj.cover.photo:
             return format_html(
                 '<img src="{}" style="max-width: 300px; height: auto;"/>',
-                obj.cover.photo.url,
+                obj.cover.photo_sm.url,
             )
         return "No cover image available"
     cover_preview.short_description = "Cover Preview"
 
     def formfield_for_foreignkey(self, db_field, request, **kwargs):
+        """Rajoittaa kansikuvan valintaa vain albumin omiin kuviin."""
         if db_field.name == "cover":
             if hasattr(request, 'resolver_match') and request.resolver_match.kwargs.get('object_id'):
                 album_id = request.resolver_match.kwargs['object_id']
@@ -125,6 +138,7 @@ class AlbumAdmin(admin.ModelAdmin):
         return super().formfield_for_foreignkey(db_field, request, **kwargs)
 
 
+# 🔹 PhotoAdmin – kuvien hallinta
 class PhotoAdmin(admin.ModelAdmin):
     list_display = ('slug', 'album', 'is_favorite', 'admin_thumbnail')
     list_display_links = ('slug',)
@@ -136,6 +150,7 @@ class PhotoAdmin(admin.ModelAdmin):
     list_editable = ('is_favorite',)
 
 
+# 🔹 Rekisteröidään admin-paneeliin
 admin.site.register(City, CityAdmin)
 admin.site.register(Location, LocationAdmin)
 admin.site.register(Album, AlbumAdmin)
diff --git a/gallery/templates/admin/upload_photos.html b/gallery/templates/admin/upload_photos.html
index 7cce70d..a0f2e65 100644
--- a/gallery/templates/admin/upload_photos.html
+++ b/gallery/templates/admin/upload_photos.html
@@ -1,114 +1,162 @@
 {% extends "admin/base_site.html" %}
 {% block content %}
-<div class="container mt-3">
-    <h1>Upload Photos to {{ album.name }}</h1>
-
-    <link rel="stylesheet" type="text/css" href="https://cdn.jsdelivr.net/npm/uikit/dist/css/uikit.min.css" />
-    <script src="https://cdn.jsdelivr.net/npm/uikit/dist/js/uikit.min.js"></script>
-    <script src="https://cdn.jsdelivr.net/npm/uikit/dist/js/uikit-icons.min.js"></script>
+<div class="module">
+    <h2>Upload Photos to {{ album.name }}</h2>
 
     <form id="upload-form" method="post" enctype="multipart/form-data">
         {% csrf_token %}
 
-        <div class="uk-margin">
-            <div id="js-drop" class="uk-placeholder uk-text-center uk-margin-medium-top">
-                <span uk-icon="icon: cloud-upload"></span>
-                <span class="uk-text-middle">Drag files here or</span>
-                <div uk-form-custom>
-                    <input id="file-input" type="file" name="photo" multiple accept=".jpg,.jpeg">
-                    <span class="uk-link">select them</span>
-                </div>
+        <div class="form-row">
+            <div id="js-drop" class="drop-area">
+                <p><strong>Drag files here</strong> or click below to select</p>
+                <input id="file-input" type="file" name="photo" multiple accept=".jpg,.jpeg">
             </div>
-
-            <ul id="file-list" class="uk-list uk-list-divider"></ul>
-            <p>Total size: <span id="total-size">0</span> MB</p>
-            <progress id="js-progressbar" class="uk-progress" value="0" max="100" hidden></progress>
         </div>
 
-        <button id="upload-button" class="uk-button uk-button-primary" type="button">Upload</button>
+        <ul id="file-list" class="messagelist"></ul>
+        <p>Total size: <span id="total-size">0</span> MB</p>
+
+        <progress id="js-progressbar" max="100" value="0" hidden></progress>
+
+        <div class="submit-row">
+            <button id="upload-button" class="default" type="button">Upload</button>
+        </div>
     </form>
 </div>
 
-<script>
-    const fileInput = document.getElementById('file-input');
-    const fileList = document.getElementById('file-list');
-    const totalSizeElement = document.getElementById('total-size');
-    const uploadButton = document.getElementById('upload-button');
-    const progressBar = document.getElementById('js-progressbar');
-    const dropArea = document.getElementById('js-drop');
-    let filesToUpload = [];
-    let totalSize = 0;
-
-    function updateFileList(newFiles) {
-        filesToUpload = [...newFiles].filter(file => file.name.match(/\.jpe?g$/i));
-        fileList.innerHTML = '';
-        totalSize = filesToUpload.reduce((acc, file) => acc + file.size, 0);
-
-        filesToUpload.forEach(file => {
-            const listItem = document.createElement('li');
-            listItem.textContent = `${file.name} (${(file.size / (1024 * 1024)).toFixed(2)} MB)`;
-            fileList.appendChild(listItem);
-        });
-        totalSizeElement.textContent = (totalSize / (1024 * 1024)).toFixed(2);
+<style>
+    .drop-area {
+        border: 2px dashed #ddd;
+        padding: 20px;
+        text-align: center;
+        background: #f9f9f9;
+        cursor: pointer;
+        margin-bottom: 10px;
+        transition: background 0.3s, border-color 0.3s;
     }
+    .drop-area.dragover {
+        border-color: #007bff;
+        background: #eef7ff;
+    }
+    #file-list {
+        margin-top: 10px;
+        list-style: none;
+        padding: 0;
+    }
+    #file-list li {
+        background: #f5f5f5;
+        padding: 5px;
+        margin-bottom: 5px;
+        border-radius: 3px;
+    }
+    .success {
+        color: green;
+    }
+    .error {
+        color: red;
+    }
+</style>
 
-    fileInput.addEventListener('change', event => updateFileList(event.target.files));
+<script>
+    document.addEventListener("DOMContentLoaded", function () {
+        const fileInput = document.getElementById('file-input');
+        const fileList = document.getElementById('file-list');
+        const totalSizeElement = document.getElementById('total-size');
+        const uploadButton = document.getElementById('upload-button');
+        const progressBar = document.getElementById('js-progressbar');
+        const dropArea = document.getElementById('js-drop');
 
-    ['dragenter', 'dragover'].forEach(eventName => dropArea.addEventListener(eventName, e => {
-        e.preventDefault();
-        dropArea.classList.add('uk-active');
-    }));
+        let filesToUpload = [];
+        let totalSize = 0;
+        const maxSize = 10 * 1024 * 1024; // 10MB per file
 
-    ['dragleave', 'drop'].forEach(eventName => dropArea.addEventListener(eventName, e => {
-        e.preventDefault();
-        dropArea.classList.remove('uk-active');
-    }));
+        function updateFileList(newFiles) {
+            // Suodatetaan vain JPEG-tiedostot ja poistetaan liian suuret
+            filesToUpload = [...newFiles].filter(file => {
+                if (!file.name.match(/\.jpe?g$/i)) {
+                    alert(`File ${file.name} is not a JPG!`);
+                    return false;
+                }
+                if (file.size > maxSize) {
+                    alert(`File ${file.name} is too large! Max size: 10MB.`);
+                    return false;
+                }
+                return true;
+            });
 
-    dropArea.addEventListener('drop', event => {
-        updateFileList(event.dataTransfer.files);
-    });
+            fileList.innerHTML = '';
+            totalSize = filesToUpload.reduce((acc, file) => acc + file.size, 0);
 
-    uploadButton.addEventListener('click', () => {
-        if (filesToUpload.length === 0) {
-            alert('Please select files to upload.');
-            return;
+            filesToUpload.forEach(file => {
+                const listItem = document.createElement('li');
+                listItem.textContent = `${file.name} (${(file.size / (1024 * 1024)).toFixed(2)} MB)`;
+                fileList.appendChild(listItem);
+            });
+
+            totalSizeElement.textContent = (totalSize / (1024 * 1024)).toFixed(2);
         }
 
-        progressBar.hidden = false;
-        let uploaded = 0;
+        fileInput.addEventListener('change', event => updateFileList(event.target.files));
 
-        filesToUpload.forEach((file, index) => {
-            const xhr = new XMLHttpRequest();
-            const formData = new FormData();
-            formData.append('photo', file);
-            formData.append('csrfmiddlewaretoken', '{{ csrf_token }}');
-            xhr.open('POST', '', true);
+        ['dragenter', 'dragover'].forEach(eventName => dropArea.addEventListener(eventName, e => {
+            e.preventDefault();
+            dropArea.classList.add('dragover');
+        }));
 
-            xhr.upload.onprogress = event => {
-                if (event.lengthComputable) {
-                    progressBar.value = ((uploaded + event.loaded) / totalSize) * 100;
-                }
-            };
+        ['dragleave', 'drop'].forEach(eventName => dropArea.addEventListener(eventName, e => {
+            e.preventDefault();
+            dropArea.classList.remove('dragover');
+        }));
 
-            xhr.onload = () => {
-                const listItem = fileList.children[index];
-                if (xhr.status === 200) {
-                    listItem.textContent += ' - Upload successful!';
-                    listItem.classList.add('uk-text-success');
-                } else {
+        dropArea.addEventListener('drop', event => {
+            updateFileList(event.dataTransfer.files);
+        });
+
+        uploadButton.addEventListener('click', () => {
+            if (filesToUpload.length === 0) {
+                alert('Please select files to upload.');
+                return;
+            }
+
+            progressBar.hidden = false;
+            progressBar.value = 0;
+            let uploadedSize = 0;
+
+            filesToUpload.forEach((file, index) => {
+                const xhr = new XMLHttpRequest();
+                const formData = new FormData();
+                formData.append('photo', file);
+                formData.append('csrfmiddlewaretoken', '{{ csrf_token }}');
+
+                xhr.open('POST', '', true);
+
+                xhr.upload.onprogress = event => {
+                    if (event.lengthComputable) {
+                        progressBar.value = ((uploadedSize + event.loaded) / totalSize) * 100;
+                    }
+                };
+
+                xhr.onload = () => {
+                    const listItem = fileList.children[index];
+                    if (xhr.status === 200) {
+                        listItem.textContent += ' - Upload successful!';
+                        listItem.classList.add('success');
+                    } else {
+                        listItem.textContent += ' - Upload failed!';
+                        listItem.classList.add('error');
+                    }
+                    uploadedSize += file.size;
+                };
+
+                xhr.onerror = () => {
+                    const listItem = fileList.children[index];
                     listItem.textContent += ' - Upload failed!';
-                    listItem.classList.add('uk-text-danger');
-                }
-                uploaded += file.size;
-            };
+                    listItem.classList.add('error');
+                };
 
-            xhr.onerror = () => {
-                fileList.children[index].textContent += ' - Upload failed!';
-                fileList.children[index].classList.add('uk-text-danger');
-            };
-
-            xhr.send(formData);
+                xhr.send(formData);
+            });
         });
     });
 </script>
-{% endblock %}
+{% endblock %}
\ No newline at end of file