diff --git a/core/management/commands/populate.py b/core/management/commands/populate.py
index 69077199..a010848a 100644
--- a/core/management/commands/populate.py
+++ b/core/management/commands/populate.py
@@ -715,9 +715,7 @@ Welcome to the wiki page!
         # SAS
         for f in self.SAS_FIXTURE_PATH.glob("*"):
             if f.is_dir():
-                album = Album(name=f.name)
-                album.clean()
-                album.save()
+                album = Album.objects.create(name=f.name, is_moderated=True)
                 for p in f.iterdir():
                     file = resize_image(Image.open(p), 1000, "WEBP")
                     pict = Picture(
@@ -731,6 +729,7 @@ Welcome to the wiki page!
                     pict.generate_thumbnails()
                     pict.full_clean()
                     pict.save()
+                album.generate_thumbnail()
 
         img_skia = Picture.objects.get(name="skia.jpg")
         img_sli = Picture.objects.get(name="sli.jpg")
diff --git a/core/models.py b/core/models.py
index eb8a5c1f..1737bb98 100644
--- a/core/models.py
+++ b/core/models.py
@@ -908,8 +908,6 @@ class SithFile(models.Model):
         super().clean()
         if "/" in self.name:
             raise ValidationError(_("Character '/' not authorized in name"))
-        if self == self.parent:
-            raise ValidationError(_("Loop in folder tree"), code="loop")
         if self == self.parent or (
             self.parent is not None and self in self.get_parent_list()
         ):
diff --git a/core/tests/test_files.py b/core/tests/test_files.py
index 525de3dd..50872f04 100644
--- a/core/tests/test_files.py
+++ b/core/tests/test_files.py
@@ -5,6 +5,7 @@ from typing import Callable
 from uuid import uuid4
 
 import pytest
+from django.conf import settings
 from django.core.cache import cache
 from django.core.files.uploadedfile import SimpleUploadedFile, UploadedFile
 from django.test import Client, TestCase
@@ -17,8 +18,8 @@ from pytest_django.asserts import assertNumQueries
 from core.baker_recipes import board_user, old_subscriber_user, subscriber_user
 from core.models import Group, QuickUploadImage, SithFile, User
 from core.utils import RED_PIXEL_PNG
+from sas.baker_recipes import picture_recipe
 from sas.models import Picture
-from sith import settings
 
 
 @pytest.mark.django_db
@@ -30,24 +31,19 @@ class TestImageAccess:
             lambda: baker.make(
                 User, groups=[Group.objects.get(pk=settings.SITH_GROUP_SAS_ADMIN_ID)]
             ),
-            lambda: baker.make(
-                User, groups=[Group.objects.get(pk=settings.SITH_GROUP_COM_ADMIN_ID)]
-            ),
         ],
     )
     def test_sas_image_access(self, user_factory: Callable[[], User]):
         """Test that only authorized users can access the sas image."""
         user = user_factory()
-        picture: SithFile = baker.make(
-            Picture, parent=SithFile.objects.get(pk=settings.SITH_SAS_ROOT_DIR_ID)
-        )
-        assert picture.is_owned_by(user)
+        picture = picture_recipe.make()
+        assert user.can_edit(picture)
 
     def test_sas_image_access_owner(self):
         """Test that the owner of the image can access it."""
         user = baker.make(User)
-        picture: Picture = baker.make(Picture, owner=user)
-        assert picture.is_owned_by(user)
+        picture = picture_recipe.make(owner=user)
+        assert user.can_edit(picture)
 
     @pytest.mark.parametrize(
         "user_factory",
@@ -63,7 +59,7 @@ class TestImageAccess:
         user = user_factory()
         owner = baker.make(User)
         picture: Picture = baker.make(Picture, owner=owner)
-        assert not picture.is_owned_by(user)
+        assert not user.can_edit(picture)
 
 
 @pytest.mark.django_db
diff --git a/core/utils.py b/core/utils.py
index bf4e8ec2..60d1bbfd 100644
--- a/core/utils.py
+++ b/core/utils.py
@@ -12,20 +12,23 @@
 # OR WITHIN THE LOCAL FILE "LICENSE"
 #
 #
-
+from dataclasses import dataclass
 from datetime import date, timedelta
 
 # Image utils
 from io import BytesIO
-from typing import Final, Unpack
+from typing import Any, Final, Unpack
 
 import PIL
 from django.conf import settings
 from django.core.files.base import ContentFile
 from django.core.files.uploadedfile import UploadedFile
 from django.db import models
+from django.forms import BaseForm
 from django.http import Http404, HttpRequest
 from django.shortcuts import get_list_or_404
+from django.template.loader import render_to_string
+from django.utils.safestring import SafeString
 from django.utils.timezone import localdate
 from PIL import ExifTags
 from PIL.Image import Image, Resampling
@@ -44,6 +47,21 @@ to generate a dummy image that is considered valid nonetheless
 """
 
 
+@dataclass
+class FormFragmentTemplateData[T: BaseForm]:
+    """Dataclass used to pre-render form fragments"""
+
+    form: T
+    template: str
+    context: dict[str, Any]
+
+    def render(self, request: HttpRequest) -> SafeString:
+        # Request is needed for csrf_tokens
+        return render_to_string(
+            self.template, context={"form": self.form, **self.context}, request=request
+        )
+
+
 def get_start_of_semester(today: date | None = None) -> date:
     """Return the date of the start of the semester of the given date.
     If no date is given, return the start date of the current semester.
diff --git a/docs/tutorial/groups.md b/docs/tutorial/groups.md
index 2c67b3f0..9a4bf7d1 100644
--- a/docs/tutorial/groups.md
+++ b/docs/tutorial/groups.md
@@ -263,3 +263,35 @@ avec un unique champ permettant de sélectionner des groupes.
 Par défaut, seuls les utilisateurs avec la permission
 `auth.change_permission` auront accès à ce formulaire
 (donc, normalement, uniquement les utilisateurs Root).
+
+```mermaid
+sequenceDiagram
+    participant A as Utilisateur
+    participant B as ReverseProxy
+    participant C as MarkdownImage
+    participant D as Model
+
+    A->>B: GET /page/foo
+    B->>C: GET /page/foo
+    C-->>B: La page, avec les urls
+    B-->>A: La page, avec les urls
+    alt image publique 
+        A->>B: GET markdown/public/2025/img.webp
+        B-->>A: img.webp
+    end
+    alt image privée 
+        A->>B: GET markdown_image/{id}
+        B->>C: GET markdown_image/{id}
+        C->>D: user.can_view(image)
+        alt l'utilisateur a le droit de voir l'image
+            D-->>C: True
+            C-->>B: 200 (avec le X-Accel-Redirect)
+            B-->>A: img.webp
+        end
+        alt l'utilisateur n'a pas le droit de l'image
+            D-->>C: False
+            C-->>B: 403
+            B-->>A: 403
+        end
+    end
+```
diff --git a/galaxy/management/commands/generate_galaxy_test_data.py b/galaxy/management/commands/generate_galaxy_test_data.py
index b567d4b3..8438ad90 100644
--- a/galaxy/management/commands/generate_galaxy_test_data.py
+++ b/galaxy/management/commands/generate_galaxy_test_data.py
@@ -35,14 +35,6 @@ from core.utils import RED_PIXEL_PNG
 from sas.models import Album, PeoplePictureRelation, Picture
 from subscription.models import Subscription
 
-RED_PIXEL_PNG: Final[bytes] = (
-    b"\x89\x50\x4e\x47\x0d\x0a\x1a\x0a\x00\x00\x00\x0d\x49\x48\x44\x52"
-    b"\x00\x00\x00\x01\x00\x00\x00\x01\x08\x02\x00\x00\x00\x90\x77\x53"
-    b"\xde\x00\x00\x00\x0c\x49\x44\x41\x54\x08\xd7\x63\xf8\xcf\xc0\x00"
-    b"\x00\x03\x01\x01\x00\x18\xdd\x8d\xb0\x00\x00\x00\x00\x49\x45\x4e"
-    b"\x44\xae\x42\x60\x82"
-)
-
 USER_PACK_SIZE: Final[int] = 1000
 
 
diff --git a/sas/api.py b/sas/api.py
index 29d302c0..67d8f23d 100644
--- a/sas/api.py
+++ b/sas/api.py
@@ -3,8 +3,10 @@ from typing import Any, Literal
 from django.conf import settings
 from django.core.exceptions import ValidationError
 from django.db.models import F
+from django.shortcuts import get_list_or_404
 from django.urls import reverse
-from ninja import Body, File, Query
+from ninja import Body, Query, UploadedFile
+from ninja.errors import HttpError
 from ninja_extra import ControllerBase, api_controller, paginate, route
 from ninja_extra.exceptions import NotFound, PermissionDenied
 from ninja_extra.pagination import PageNumberPaginationExtra
@@ -16,11 +18,12 @@ from core.auth.api_permissions import (
     CanAccessLookup,
     CanEdit,
     CanView,
+    HasPerm,
     IsInGroup,
     IsRoot,
 )
 from core.models import Notification, User
-from core.schemas import UploadedImage
+from core.utils import get_list_exact_or_404
 from sas.models import Album, PeoplePictureRelation, Picture
 from sas.schemas import (
     AlbumAutocompleteSchema,
@@ -28,6 +31,7 @@ from sas.schemas import (
     AlbumSchema,
     IdentifiedUserSchema,
     ModerationRequestSchema,
+    MoveAlbumSchema,
     PictureFilterSchema,
     PictureSchema,
 )
@@ -69,6 +73,48 @@ class AlbumController(ControllerBase):
             Album.objects.viewable_by(self.context.request.user).order_by("-date")
         )
 
+    @route.patch("/parent", permissions=[IsAuthenticated])
+    def change_album_parent(self, payload: list[MoveAlbumSchema]):
+        """Change parents of albums
+
+        Note:
+            For this operation to work, the user must be authorized
+            to edit both the moved albums and their new parent.
+        """
+        user: User = self.context.request.user
+        albums: list[Album] = get_list_exact_or_404(
+            Album, pk__in={a.id for a in payload}
+        )
+        if not user.has_perm("sas.change_album"):
+            unauthorized = [a.id for a in albums if not user.can_edit(a)]
+            raise PermissionDenied(
+                f"You can't move the following albums : {unauthorized}"
+            )
+        parents: list[Album] = get_list_exact_or_404(
+            Album, pk__in={a.new_parent_id for a in payload}
+        )
+        if not user.has_perm("sas.change_album"):
+            unauthorized = [a.id for a in parents if not user.can_edit(a)]
+            raise PermissionDenied(
+                f"You can't move to the following albums : {unauthorized}"
+            )
+        id_to_new_parent = {i.id: i.new_parent_id for i in payload}
+        for album in albums:
+            album.parent_id = id_to_new_parent[album.id]
+        # known caveat : moving an album won't move it's thumbnail.
+        # E.g. if the album foo/bar is moved to foo/baz,
+        # the thumbnail will still be foo/bar/thumb.webp
+        # This has no impact for the end user
+        # and doing otherwise would be hard for us to implement,
+        # because we would then have to manage rollbacks on fail.
+        Album.objects.bulk_update(albums, fields=["parent_id"])
+
+    @route.delete("", permissions=[HasPerm("sas.delete_album")])
+    def delete_album(self, album_ids: list[int]):
+        # known caveat : deleting an album doesn't delete the pictures on the disk.
+        # It's a db only operation.
+        albums: list[Album] = get_list_or_404(Album, pk__in=album_ids)
+
 
 @api_controller("/sas/picture")
 class PicturesController(ControllerBase):
@@ -116,27 +162,25 @@ class PicturesController(ControllerBase):
         },
         url_name="upload_picture",
     )
-    def upload_picture(self, album_id: Body[int], picture: File[UploadedImage]):
+    def upload_picture(self, album_id: Body[int], picture: UploadedFile):
         album = self.get_object_or_exception(Album, pk=album_id)
         user = self.context.request.user
         self_moderate = user.has_perm("sas.moderate_sasfile")
         new = Picture(
             parent=album,
             name=picture.name,
-            file=picture,
+            original=picture,
             owner=user,
             is_moderated=self_moderate,
-            is_folder=False,
-            mime_type=picture.content_type,
         )
         if self_moderate:
             new.moderator = user
+        new.generate_thumbnails()
         try:
-            new.generate_thumbnails()
             new.full_clean()
-            new.save()
         except ValidationError as e:
-            return self.create_response({"detail": dict(e)}, status_code=409)
+            raise HttpError(status_code=409, message=str(e)) from e
+        new.save()
 
     @route.get(
         "/{picture_id}/identified",
diff --git a/sas/baker_recipes.py b/sas/baker_recipes.py
index 974b0aec..3cdbe772 100644
--- a/sas/baker_recipes.py
+++ b/sas/baker_recipes.py
@@ -1,12 +1,35 @@
+from django.core.files.uploadedfile import SimpleUploadedFile
 from model_bakery import seq
 from model_bakery.recipe import Recipe
 
-from sas.models import Picture
+from core.utils import RED_PIXEL_PNG
+from sas.models import Album, Picture
 
-picture_recipe = Recipe(Picture, is_moderated=True, name=seq("Picture "))
-"""A SAS Picture fixture.
+album_recipe = Recipe(
+    Album,
+    name=seq("Album "),
+    thumbnail=SimpleUploadedFile(
+        name="thumb.webp", content=b"", content_type="image/webp"
+    ),
+)
 
-Warnings:
-    If you don't `bulk_create` this, you need
-    to explicitly set the parent album, or it won't work
-"""
+
+picture_recipe = Recipe(
+    Picture,
+    is_moderated=True,
+    name=seq("Picture "),
+    original=SimpleUploadedFile(
+        # compressed and thumbnail are generated on save (except if bulk creating).
+        # For this step no to fail, original must be a valid image.
+        name="img.png",
+        content=RED_PIXEL_PNG,
+        content_type="image/png",
+    ),
+    compressed=SimpleUploadedFile(
+        name="img.webp", content=b"", content_type="image/webp"
+    ),
+    thumbnail=SimpleUploadedFile(
+        name="img.webp", content=b"", content_type="image/webp"
+    ),
+)
+"""A SAS Picture fixture."""
diff --git a/sas/models.py b/sas/models.py
index 27b6343e..3663ec27 100644
--- a/sas/models.py
+++ b/sas/models.py
@@ -17,12 +17,16 @@ from __future__ import annotations
 
 import contextlib
 from io import BytesIO
-from typing import ClassVar, Self
+from pathlib import Path
+from typing import TYPE_CHECKING, ClassVar, Self
 
 from django.conf import settings
 from django.core.cache import cache
+from django.core.exceptions import ValidationError
+from django.core.files.base import ContentFile
 from django.db import models
 from django.db.models import Exists, OuterRef, Q
+from django.db.models.deletion import Collector
 from django.urls import reverse
 from django.utils import timezone
 from django.utils.functional import cached_property
@@ -32,6 +36,9 @@ from PIL import Image
 from core.models import Group, Notification, User
 from core.utils import exif_auto_rotate, resize_image
 
+if TYPE_CHECKING:
+    from django.db.models.fields.files import FieldFile
+
 
 def get_directory(instance: SasFile, filename: str):
     return f"./{instance.parent_path}/{filename}"
@@ -43,8 +50,8 @@ def get_compressed_directory(instance: SasFile, filename: str):
 
 def get_thumbnail_directory(instance: SasFile, filename: str):
     if isinstance(instance, Album):
-        name, extension = filename.rsplit(".", 1)
-        filename = f"{name}/thumb.{extension}"
+        _, extension = filename.rsplit(".", 1)
+        filename = f"{instance.name}/thumb.{extension}"
     return f"./.thumbnails/{instance.parent_path}/{filename}"
 
 
@@ -57,6 +64,7 @@ class SasFile(models.Model):
 
     class Meta:
         abstract = True
+        permissions = [("moderate_sasfile", "Can moderate SAS albums and SAS pictures")]
 
     def can_be_viewed_by(self, user):
         if user.is_anonymous:
@@ -74,15 +82,20 @@ class SasFile(models.Model):
             cache.set(cache_key, viewable, timeout=10)
         return self.id in viewable
 
-    def can_be_edited_by(self, user):
-        return user.is_root or user.is_in_group(pk=settings.SITH_GROUP_SAS_ADMIN_ID)
+    def can_be_edited_by(self, user: User):
+        return user.has_perm(f"sas.change_{self._meta.model_name}")
 
     @cached_property
     def parent_path(self) -> str:
+        """The parent location in the SAS album tree (e.g. `SAS/foo/bar`)."""
         return "/".join(["SAS", *[p.name for p in self.parent_list]])
 
     @cached_property
-    def parent_list(self) -> list[Self]:
+    def parent_list(self) -> list[Album]:
+        """The ancestors of this SAS object.
+
+        The result is ordered from the direct parent to the farthest one.
+        """
         parents = []
         current = self.parent
         while current is not None:
@@ -114,17 +127,6 @@ class AlbumQuerySet(models.QuerySet):
             Exists(Picture.objects.filter(parent_id=OuterRef("pk")).viewable_by(user))
         )
 
-    def annotate_is_moderated(self) -> Self:
-        # an album is moderated if it has at least one moderated photo
-        # if there is no photo at all, the album isn't considered as non-moderated
-        # (it's just empty)
-        return self.annotate(
-            is_moderated=Exists(
-                Picture.objects.filter(parent=OuterRef("pk"), is_moderated=True)
-            )
-            | ~Exists(Picture.objects.filter(parent=OuterRef("pk")))
-        )
-
 
 class Album(SasFile):
     NAME_MAX_LENGTH: ClassVar[int] = 50
@@ -139,18 +141,22 @@ class Album(SasFile):
         on_delete=models.CASCADE,
     )
     thumbnail = models.FileField(
-        upload_to=get_thumbnail_directory, verbose_name=_("thumbnail"), max_length=256
+        upload_to=get_thumbnail_directory,
+        verbose_name=_("thumbnail"),
+        max_length=256,
+        blank=True,
     )
     view_groups = models.ManyToManyField(
-        Group, related_name="viewable_albums", verbose_name=_("view groups")
+        Group, related_name="viewable_albums", verbose_name=_("view groups"), blank=True
     )
     edit_groups = models.ManyToManyField(
-        Group, related_name="editable_albums", verbose_name=_("edit groups")
+        Group, related_name="editable_albums", verbose_name=_("edit groups"), blank=True
     )
     event_date = models.DateField(
         _("event date"),
         help_text=_("The date on which the photos in this album were taken"),
         default=timezone.localdate,
+        blank=True,
     )
     is_moderated = models.BooleanField(_("is moderated"), default=False)
 
@@ -160,7 +166,9 @@ class Album(SasFile):
         verbose_name = _("album")
         constraints = [
             models.UniqueConstraint(
-                fields=["name", "parent"], name="unique_album_name_if_same_parent"
+                fields=["name", "parent"],
+                name="unique_album_name_if_same_parent",
+                # TODO : add `nulls_distinct=True` after upgrading to django>=5.0
             )
         ]
 
@@ -182,14 +190,62 @@ class Album(SasFile):
     def get_absolute_url(self):
         return reverse("sas:album", kwargs={"album_id": self.id})
 
+    def clean(self):
+        super().clean()
+        if "/" in self.name:
+            raise ValidationError(_("Character '/' not authorized in name"))
+        if self.parent_id is not None and (
+            self.id == self.parent_id or self in self.parent_list
+        ):
+            raise ValidationError(_("Loop in album tree"), code="loop")
+        if self.thumbnail:
+            try:
+                Image.open(BytesIO(self.thumbnail.read()))
+            except Image.UnidentifiedImageError as e:
+                raise ValidationError(_("This is not a valid album thumbnail")) from e
+
+    def delete(self, *args, **kwargs):
+        """Delete the album, all of its children and all linked disk files"""
+        collector = Collector(using="default")
+        collector.collect([self])
+        albums: set[Album] = collector.data[Album]
+        pictures: set[Picture] = collector.data[Picture]
+        files: list[FieldFile] = [
+            *[a.thumbnail for a in albums],
+            *[p.thumbnail for p in pictures],
+            *[p.compressed for p in pictures],
+            *[p.original for p in pictures],
+        ]
+        # `bool(f)` checks that the file actually exists on the disk
+        files = [f for f in files if bool(f)]
+        folders = {Path(f.path).parent for f in files}
+        res = super().delete(*args, **kwargs)
+        # once the model instances have been deleted,
+        # delete the actual files.
+        for file in files:
+            # save=False ensures that django doesn't recreate the db record,
+            # which would make the whole deletion pointless
+            # cf. https://docs.djangoproject.com/en/stable/ref/models/fields/#django.db.models.fields.files.FieldFile.delete
+            file.delete(save=False)
+        for folder in folders:
+            # now that the files are deleted, remove the empty folders
+            if folder.is_dir() and next(folder.iterdir(), None) is None:
+                folder.rmdir()
+        return res
+
     def get_download_url(self):
         return reverse("sas:album_preview", kwargs={"album_id": self.id})
 
     def generate_thumbnail(self):
-        p = self.pictures.order_by("?").first() or self.children.order_by("?").first()
-        if p and p.thumbnail:
-            self.thumbnail = p.thumbnail
-            self.thumbnail.name = f"{self.name}/thumb.webp"
+        p = (
+            self.pictures.exclude(thumbnail="").order_by("?").first()
+            or self.children.exclude(thumbnail="").order_by("?").first()
+        )
+        if p:
+            # The file is loaded into memory to duplicate it.
+            # It may not be the most efficient way, but thumbnails are
+            # usually quite small, so it's still ok
+            self.thumbnail = ContentFile(p.thumbnail.read(), name="thumb.webp")
             self.save()
 
 
@@ -218,8 +274,8 @@ class Picture(SasFile):
     thumbnail = models.FileField(
         upload_to=get_thumbnail_directory,
         verbose_name=_("thumbnail"),
-        unique=True,
         max_length=256,
+        unique=True,
     )
     original = models.FileField(
         upload_to=get_directory,
@@ -253,14 +309,17 @@ class Picture(SasFile):
 
     objects = PictureQuerySet.as_manager()
 
+    class Meta:
+        verbose_name = _("picture")
+        constraints = [
+            models.UniqueConstraint(
+                fields=["name", "parent"], name="sas_picture_unique_per_album"
+            )
+        ]
+
     def __str__(self):
         return self.name
 
-    def save(self, *args, **kwargs):
-        if self._state.adding:
-            self.generate_thumbnails()
-        super().save(*args, **kwargs)
-
     def get_absolute_url(self):
         return reverse("sas:picture", kwargs={"picture_id": self.id})
 
@@ -292,10 +351,11 @@ class Picture(SasFile):
         # - photographers usually already optimize their images
         thumb = resize_image(im, 200, "webp")
         compressed = resize_image(im, 1200, "webp")
+        new_extension_name = str(Path(self.original.name).with_suffix(".webp"))
         self.thumbnail = thumb
-        self.thumbnail.name = self.name
+        self.thumbnail.name = new_extension_name
         self.compressed = compressed
-        self.compressed.name = self.name
+        self.compressed.name = new_extension_name
 
     def rotate(self, degree):
         for field in self.original, self.compressed, self.thumbnail:
diff --git a/sas/schemas.py b/sas/schemas.py
index bcb2ab05..4bd7622c 100644
--- a/sas/schemas.py
+++ b/sas/schemas.py
@@ -50,7 +50,12 @@ class AlbumAutocompleteSchema(ModelSchema):
 
     @staticmethod
     def resolve_path(obj: Album) -> str:
-        return str(Path(obj.get_parent_path()) / obj.name)
+        return str(Path(obj.parent_path) / obj.name)
+
+
+class MoveAlbumSchema(Schema):
+    id: int
+    new_parent_id: int
 
 
 class PictureFilterSchema(FilterSchema):
diff --git a/sas/static/bundled/sas/album-index.ts b/sas/static/bundled/sas/album-index.ts
index 32f0f02f..bf715146 100644
--- a/sas/static/bundled/sas/album-index.ts
+++ b/sas/static/bundled/sas/album-index.ts
@@ -126,3 +126,108 @@ document.addEventListener("alpine:init", () => {
     },
   }));
 });
+
+// Todo: migrate to alpine.js if we have some time
+// $("form#upload_form").submit(function (event) {
+//   const formData = new FormData($(this)[0]);
+//
+//   if (!formData.get("album_name") && !formData.get("images").name) return false;
+//
+//   if (!formData.get("images").name) {
+//     return true;
+//   }
+//
+//   event.preventDefault();
+//
+//   let errorList = this.querySelector("#upload_form ul.errorlist.nonfield");
+//   if (errorList === null) {
+//     errorList = document.createElement("ul");
+//     errorList.classList.add("errorlist", "nonfield");
+//     this.insertBefore(errorList, this.firstElementChild);
+//   }
+//
+//   while (errorList.childElementCount > 0)
+//     errorList.removeChild(errorList.firstElementChild);
+//
+//   let progress = this.querySelector("progress");
+//   if (progress === null) {
+//     progress = document.createElement("progress");
+//     progress.value = 0;
+//     const p = document.createElement("p");
+//     p.appendChild(progress);
+//     this.insertBefore(p, this.lastElementChild);
+//   }
+//
+//   let dataHolder;
+//
+//   if (formData.get("album_name")) {
+//     dataHolder = new FormData();
+//     dataHolder.set("csrfmiddlewaretoken", "{{ csrf_token }}");
+//     dataHolder.set("album_name", formData.get("album_name"));
+//     $.ajax({
+//       method: "POST",
+//       url: "{{ url('sas:album_upload', album_id=object.id) }}",
+//       data: dataHolder,
+//       processData: false,
+//       contentType: false,
+//       success: onSuccess,
+//     });
+//   }
+//
+//   const images = formData.getAll("images");
+//   const imagesCount = images.length;
+//   let completeCount = 0;
+//
+//   const poolSize = 1;
+//   const imagePool = [];
+//
+//   while (images.length > 0 && imagePool.length < poolSize) {
+//     const image = images.shift();
+//     imagePool.push(image);
+//     sendImage(image);
+//   }
+//
+//   function sendImage(image) {
+//     dataHolder = new FormData();
+//     dataHolder.set("csrfmiddlewaretoken", "{{ csrf_token }}");
+//     dataHolder.set("images", image);
+//
+//     $.ajax({
+//       method: "POST",
+//       url: "{{ url('sas:album_upload', album_id=object.id) }}",
+//       data: dataHolder,
+//       processData: false,
+//       contentType: false,
+//     })
+//       .fail(onSuccess.bind(undefined, image))
+//       .done(onSuccess.bind(undefined, image))
+//       .always(next.bind(undefined, image));
+//   }
+//
+//   function next(image, _, __) {
+//     const index = imagePool.indexOf(image);
+//     const nextImage = images.shift();
+//
+//     if (index !== -1) {
+//       imagePool.splice(index, 1);
+//     }
+//
+//     if (nextImage) {
+//       imagePool.push(nextImage);
+//       sendImage(nextImage);
+//     }
+//   }
+//
+//   function onSuccess(image, data, _, __) {
+//     let errors = [];
+//
+//     if ($(data.responseText).find(".errorlist.nonfield")[0])
+//       errors = Array.from($(data.responseText).find(".errorlist.nonfield")[0].children);
+//
+//     while (errors.length > 0) errorList.appendChild(errors.shift());
+//
+//     progress.value = ++completeCount / imagesCount;
+//     if (progress.value === 1 && errorList.children.length === 0)
+//       document.location.reload();
+//   }
+// });
diff --git a/sas/static/bundled/sas/pictures-download-index.ts b/sas/static/bundled/sas/pictures-download-index.ts
index 21ee9989..abaecbd2 100644
--- a/sas/static/bundled/sas/pictures-download-index.ts
+++ b/sas/static/bundled/sas/pictures-download-index.ts
@@ -30,10 +30,10 @@ document.addEventListener("alpine:init", () => {
 
       await Promise.all(
         this.pictures.map((p: PictureSchema) => {
-          const imgName = `${p.album}/IMG_${p.date.replace(/[:\-]/g, "_")}${p.name.slice(p.name.lastIndexOf("."))}`;
+          const imgName = `${p.album}/IMG_${p.created_at.replace(/[:\-]/g, "_")}${p.name.slice(p.name.lastIndexOf("."))}`;
           return zipWriter.add(imgName, new HttpReader(p.full_size_url), {
             level: 9,
-            lastModDate: new Date(p.date),
+            lastModDate: new Date(p.created_at),
             onstart: incrementProgressBar,
           });
         }),
diff --git a/sas/templates/sas/album.jinja b/sas/templates/sas/album.jinja
index 306baa9e..3ba5a4d2 100644
--- a/sas/templates/sas/album.jinja
+++ b/sas/templates/sas/album.jinja
@@ -40,17 +40,17 @@
         </div>
       </div>
 
-      {% if clipboard %}
-        <div class="clipboard">
-          {% trans %}Clipboard: {% endtrans %}
-          <ul>
-            {% for f in clipboard %}
-              <li>{{ f.get_full_path() }}</li>
-            {% endfor %}
-          </ul>
-          <input name="clear" type="submit" value="{% trans %}Clear clipboard{% endtrans %}">
-        </div>
-      {% endif %}
+{#      {% if clipboard %}#}
+{#        <div class="clipboard">#}
+{#          {% trans %}Clipboard: {% endtrans %}#}
+{#          <ul>#}
+{#            {% for f in clipboard["albums"] %}#}
+{#              <li>{{ f.get_full_path() }}</li>#}
+{#            {% endfor %}#}
+{#          </ul>#}
+{#          <input name="clear" type="submit" value="{% trans %}Clear clipboard{% endtrans %}">#}
+{#        </div>#}
+{#      {% endif %}#}
   {% endif %}
 
   {% if show_albums %}
@@ -73,8 +73,8 @@
                 <div class="text">{% trans %}To be moderated{% endtrans %}</div>
               </template>
             </div>
-            {% if is_sas_admin %}
-              <input type="checkbox" name="file_list" :value="album.id">
+            {% if edit_mode %}
+              <input type="checkbox" name="album_list" :value="album.id">
             {% endif %}
           </a>
         </template>
@@ -100,7 +100,7 @@
             </template>
           </div>
           {% if is_sas_admin %}
-            <input type="checkbox" name="file_list" :value="picture.id">
+            <input type="checkbox" name="picture_list" :value="picture.id">
           {% endif %}
         </a>
       </template>
@@ -120,9 +120,9 @@
       {% csrf_token %}
       <div class="inputs">
         <p>
-          <label for="{{ upload_form.images.id_for_label }}">{{ upload_form.images.label }} :</label>
-          {{ upload_form.images|add_attr("x-ref=pictures") }}
-          <span class="helptext">{{ upload_form.images.help_text }}</span>
+          <label for="{{ form.images.id_for_label }}">{{ form.images.label }} :</label>
+          {{ form.images|add_attr("x-ref=pictures") }}
+          <span class="helptext">{{ form.images.help_text }}</span>
         </p>
         <input type="submit" value="{% trans %}Upload{% endtrans %}" />
         <progress x-ref="progress" x-show="sending"></progress>
diff --git a/sas/templates/sas/macros.jinja b/sas/templates/sas/macros.jinja
index dacd1e05..9905d783 100644
--- a/sas/templates/sas/macros.jinja
+++ b/sas/templates/sas/macros.jinja
@@ -3,17 +3,11 @@
     {% if a.thumbnail %}
       {% set img = a.get_download_url() %}
       {% set src = a.name %}
-    {% elif a.children.filter(is_folder=False, is_moderated=True).exists() %}
-      {% set picture = a.children.filter(is_folder=False).first().as_picture %}
-      {% set img = picture.get_download_thumb_url()  %}
-      {% set src = picture.name %}
     {% else %}
       {% set img = static('core/img/sas.jpg') %}
       {% set src = "sas.jpg" %}
     {% endif %}
-    <div
-      class="album{% if not a.is_moderated %} not_moderated{% endif %}"
-    >
+    <div class="album{% if not a.is_moderated %} not_moderated{% endif %}">
       <img src="{{ img }}" alt="{{ src }}" loading="lazy" />
       {% if not a.is_moderated %}
         <div class="overlay">&nbsp;</div>
diff --git a/sas/tests/test_model.py b/sas/tests/test_model.py
index dd2299f1..4882e442 100644
--- a/sas/tests/test_model.py
+++ b/sas/tests/test_model.py
@@ -3,8 +3,8 @@ from model_bakery import baker
 
 from core.baker_recipes import old_subscriber_user, subscriber_user
 from core.models import User
-from sas.baker_recipes import picture_recipe
-from sas.models import Picture
+from sas.baker_recipes import album_recipe, picture_recipe
+from sas.models import Album, Picture
 
 
 class TestPictureQuerySet(TestCase):
@@ -44,3 +44,22 @@ class TestPictureQuerySet(TestCase):
         user.pictures.create(picture=self.pictures[1])  # moderated
         pictures = list(Picture.objects.viewable_by(user))
         assert pictures == [self.pictures[1]]
+
+
+class TestDeleteAlbum(TestCase):
+    def setUp(cls):
+        cls.album: Album = album_recipe.make()
+        cls.album_pictures = picture_recipe.make(parent=cls.album, _quantity=5)
+        cls.sub_album = album_recipe.make(parent=cls.album)
+        cls.sub_album_pictures = picture_recipe.make(parent=cls.sub_album, _quantity=5)
+
+    def test_delete(self):
+        album_ids = [self.album.id, self.sub_album.id]
+        picture_ids = [
+            *[p.id for p in self.album_pictures],
+            *[p.id for p in self.sub_album_pictures],
+        ]
+        self.album.delete()
+        # assert not p.exists()
+        assert not Album.objects.filter(id__in=album_ids).exists()
+        assert not Picture.objects.filter(id__in=picture_ids).exists()
diff --git a/sas/views.py b/sas/views.py
index 2ba8990a..b41d3bee 100644
--- a/sas/views.py
+++ b/sas/views.py
@@ -22,12 +22,12 @@ from django.shortcuts import get_object_or_404
 from django.urls import reverse
 from django.utils.safestring import SafeString
 from django.views.generic import CreateView, DetailView, TemplateView
-from django.views.generic.edit import FormView, UpdateView
+from django.views.generic.edit import FormMixin, FormView, UpdateView
 
 from core.auth.mixins import CanEditMixin, CanViewMixin
 from core.models import SithFile, User
-from core.views import UseFragmentsMixin
-from core.views.files import FileView, send_raw_file
+from core.views import FileView, UseFragmentsMixin
+from core.views.files import send_raw_file
 from core.views.mixins import FragmentMixin, FragmentRenderer
 from core.views.user import UserTabsMixin
 from sas.forms import (
@@ -63,6 +63,7 @@ class AlbumCreateFragment(FragmentMixin, CreateView):
 
 
 class SASMainView(UseFragmentsMixin, TemplateView):
+    form_class = AlbumCreateForm
     template_name = "sas/main.jinja"
 
     def get_fragments(self) -> dict[str, FragmentRenderer]:
@@ -79,23 +80,25 @@ class SASMainView(UseFragmentsMixin, TemplateView):
         root_user = User.objects.get(pk=settings.SITH_ROOT_USER_ID)
         return {"album_create_fragment": {"owner": root_user}}
 
-    def post(self, request, *args, **kwargs):
-        self.form = self.get_form()
-        root = User.objects.filter(username="root").first()
-        if request.user.is_authenticated and request.user.is_in_group(
-            pk=settings.SITH_GROUP_SAS_ADMIN_ID
-        ):
-            if self.form.is_valid():
-                self.form.process(parent=None, owner=root, files=[], automodere=True)
-                if self.form.is_valid():
-                    return super().form_valid(self.form)
-        else:
-            self.form.add_error(None, _("You do not have the permission to do that"))
-        return self.form_invalid(self.form)
+    def dispatch(self, request, *args, **kwargs):
+        if request.method == "POST" and not self.request.user.has_perm("sas.add_album"):
+            raise PermissionDenied
+        return super().dispatch(request, *args, **kwargs)
+
+    def get_form(self, form_class=None):
+        if not self.request.user.has_perm("sas.add_album"):
+            return None
+        return super().get_form(form_class)
+
+    def get_form_kwargs(self):
+        return super().get_form_kwargs() | {
+            "owner": User.objects.get(pk=settings.SITH_ROOT_USER_ID),
+            "parent": None,
+        }
 
     def get_context_data(self, **kwargs):
         kwargs = super().get_context_data(**kwargs)
-        albums_qs = Album.objects.annotate_is_moderated().viewable_by(self.request.user)
+        albums_qs = Album.objects.viewable_by(self.request.user)
         kwargs["categories"] = list(albums_qs.filter(parent=None).order_by("id"))
         kwargs["latest"] = list(albums_qs.order_by("-id")[:5])
         return kwargs
@@ -149,10 +152,11 @@ def send_thumb(request, picture_id):
     return send_raw_file(Path(picture.thumbnail.path))
 
 
-class AlbumView(CanViewMixin, UseFragmentsMixin, DetailView):
+class AlbumView(CanViewMixin, UseFragmentsMixin, FormMixin, DetailView):
     model = Album
     pk_url_kwarg = "album_id"
     template_name = "sas/album.jinja"
+    form_class = PictureUploadForm
 
     def get_fragments(self) -> dict[str, FragmentRenderer]:
         return {
@@ -167,27 +171,32 @@ class AlbumView(CanViewMixin, UseFragmentsMixin, DetailView):
         except ValueError as e:
             raise Http404 from e
         if "clipboard" not in request.session:
-            request.session["clipboard"] = []
+            request.session["clipboard"] = {"albums": [], "pictures": []}
         return super().dispatch(request, *args, **kwargs)
 
+    def get_form(self, *args, **kwargs):
+        if not self.request.user.can_edit(self.object):
+            return None
+        return super().get_form(*args, **kwargs)
+
     def post(self, request, *args, **kwargs):
         self.object = self.get_object()
-        if not self.object.file:
-            self.object.generate_thumbnail()
-        if request.user.can_edit(self.object):  # Handle the copy-paste functions
-            FileView.handle_clipboard(request, self.object)
-        return HttpResponseRedirect(self.request.path)
+        form = self.get_form()
+        if not form:
+            # the form is reserved for users that can edit this album.
+            # If there is no form, it means the user has no right to do a POST
+            raise PermissionDenied
+        FileView.handle_clipboard(self.request, self.object)
+        if not form.is_valid():
+            return self.form_invalid(form)
+        return self.form_valid(form)
 
     def get_fragment_data(self) -> dict[str, dict[str, Any]]:
         return {"album_create_fragment": {"owner": self.request.user}}
 
     def get_context_data(self, **kwargs):
         kwargs = super().get_context_data(**kwargs)
-        if ids := self.request.session.get("clipboard", None):
-            kwargs["clipboard"] = SithFile.objects.filter(id__in=ids)
-        kwargs["upload_form"] = PictureUploadForm()
-        # if True, the albums will be fetched with a request to the API
-        # if False, the section won't be displayed at all
+        kwargs["clipboard"] = {}
         kwargs["show_albums"] = (
             Album.objects.viewable_by(self.request.user)
             .filter(parent_id=self.object.id)
diff --git a/staticfiles/processors.py b/staticfiles/processors.py
index 5f44731b..886dbc9e 100644
--- a/staticfiles/processors.py
+++ b/staticfiles/processors.py
@@ -182,13 +182,12 @@ class OpenApi:
                 path[action]["operationId"] = "_".join(
                     desc["operationId"].split("_")[:-1]
                 )
+
         schema = str(schema)
 
         if old_hash == sha1(schema.encode("utf-8")).hexdigest():
             logging.getLogger("django").info("✨ Api did not change, nothing to do ✨")
             return
 
-        with open(out, "w") as f:
-            _ = f.write(schema)
-
+        out.write_text(schema)
         return subprocess.Popen(["npm", "run", "openapi"])