diff --git a/.github/dependabot.yml b/.github/dependabot.yml
index d232a23..dd93a24 100644
--- a/.github/dependabot.yml
+++ b/.github/dependabot.yml
@@ -1,10 +1,10 @@
 version: 2
 updates:
-- package-ecosystem: pip
-  directory: "/"
-  schedule:
-    interval: daily
-- package-ecosystem: github-actions
-  directory: "/"
-  schedule:
-    interval: daily
+  - package-ecosystem: pip
+    directory: "/"
+    schedule:
+      interval: daily
+  - package-ecosystem: github-actions
+    directory: "/"
+    schedule:
+      interval: daily
diff --git a/.github/workflows/ci.yml b/.github/workflows/ci.yml
index b7f9901..eac578b 100644
--- a/.github/workflows/ci.yml
+++ b/.github/workflows/ci.yml
@@ -1,33 +1,10 @@
 name: CI
-
 on:
   push:
     branches:
       - main
   pull_request:
-
 jobs:
-
-  lint:
-    runs-on: ubuntu-latest
-    strategy:
-      matrix:
-        lint-command:
-          - bandit -r . -x ./tests
-          - black --check --diff .
-          - flake8 .
-          - isort --check-only --diff .
-          - pydocstyle .
-    steps:
-      - uses: actions/checkout@v5
-      - uses: actions/setup-python@v6
-        with:
-          python-version: "3.x"
-          cache: 'pip'
-          cache-dependency-path: 'pyproject.toml'
-      - run: python -m pip install -e .[lint]
-      - run: ${{ matrix.lint-command }}
-
   dist:
     runs-on: ubuntu-latest
     steps:
@@ -43,11 +20,8 @@ jobs:
       - uses: actions/upload-artifact@v5
         with:
           path: dist/*
-
   pytest-os:
     name: PyTest
-    needs:
-      - lint
     strategy:
       matrix:
         os:
@@ -67,11 +41,8 @@ jobs:
         with:
           flags: ${{ matrix.os }}
           token: ${{ secrets.CODECOV_TOKEN }}
-
   pytest-python:
     name: PyTest
-    needs:
-      - lint
     strategy:
       matrix:
         python-version:
@@ -80,7 +51,7 @@ jobs:
           - "3.12"
           - "3.13"
         django-version:
-          - "4.2"  # LTS
+          - "4.2" # LTS
     runs-on: ubuntu-latest
     steps:
       - uses: actions/checkout@v5
@@ -95,11 +66,8 @@ jobs:
         with:
           flags: py${{ matrix.python-version }}
           token: ${{ secrets.CODECOV_TOKEN }}
-
   pytest-django:
     name: PyTest
-    needs:
-      - lint
     strategy:
       matrix:
         python-version:
@@ -122,11 +90,8 @@ jobs:
         with:
           flags: dj${{ matrix.django-version }}
           token: ${{ secrets.CODECOV_TOKEN }}
-
   pytest-extras:
     name: PyTest
-    needs:
-      - lint
     strategy:
       matrix:
         extras:
@@ -151,10 +116,9 @@ jobs:
         with:
           flags: ${{ matrix.extras }}
           token: ${{ secrets.CODECOV_TOKEN }}
-
   codeql:
     name: CodeQL
-    needs: [ dist, pytest-os, pytest-python, pytest-django, pytest-extras ]
+    needs: [dist, pytest-os, pytest-python, pytest-django, pytest-extras]
     runs-on: ubuntu-latest
     permissions:
       actions: read
@@ -163,7 +127,7 @@ jobs:
     strategy:
       fail-fast: false
       matrix:
-        language: [ python ]
+        language: [python]
     steps:
       - name: Checkout
         uses: actions/checkout@v5
diff --git a/.github/workflows/release.yml b/.github/workflows/release.yml
index 88e7ad0..59051bb 100644
--- a/.github/workflows/release.yml
+++ b/.github/workflows/release.yml
@@ -1,14 +1,11 @@
 name: Release
-
 on:
   release:
     types: [published]
   workflow_dispatch:
-
 jobs:
   pypi-build:
     runs-on: ubuntu-latest
-
     steps:
       - uses: actions/checkout@v5
       - uses: actions/setup-python@v6
@@ -20,14 +17,12 @@ jobs:
         with:
           name: release-dists
           path: dist/
-
   pypi-publish:
     runs-on: ubuntu-latest
     needs:
       - pypi-build
     permissions:
       id-token: write
-
     steps:
       - uses: actions/download-artifact@v6
         with:
diff --git a/.pre-commit-config.yaml b/.pre-commit-config.yaml
new file mode 100644
index 0000000..e6fd6ec
--- /dev/null
+++ b/.pre-commit-config.yaml
@@ -0,0 +1,48 @@
+repos:
+  - repo: https://github.com/pre-commit/pre-commit-hooks
+    rev: v6.0.0
+    hooks:
+      - id: trailing-whitespace
+      - id: check-merge-conflict
+      - id: check-ast
+      - id: check-toml
+      - id: check-yaml
+      - id: check-symlinks
+      - id: debug-statements
+      - id: end-of-file-fixer
+        exclude: "pictures/templates/pictures/attrs.html"
+      - id: no-commit-to-branch
+        args: [--branch, main]
+  - repo: https://github.com/asottile/pyupgrade
+    rev: v3.20.0
+    hooks:
+      - id: pyupgrade
+  - repo: https://github.com/adamchainz/django-upgrade
+    rev: 1.29.0
+    hooks:
+      - id: django-upgrade
+  - repo: https://github.com/hukkin/mdformat
+    rev: 0.7.22
+    hooks:
+      - id: mdformat
+        additional_dependencies:
+          - mdformat-ruff
+          - mdformat-deflist
+          - mdformat-footnote
+          - mdformat-gfm
+          - mdformat-gfm-alerts
+          - mdformat-tables
+  - repo: https://github.com/astral-sh/ruff-pre-commit
+    rev: v0.13.3
+    hooks:
+      - id: ruff-check
+        args: [--fix, --exit-non-zero-on-fix]
+      - id: ruff-format
+  - repo: https://github.com/google/yamlfmt
+    rev: v0.19.0
+    hooks:
+      - id: yamlfmt
+ci:
+  autoupdate_schedule: weekly
+  skip:
+    - no-commit-to-branch
diff --git a/README.md b/README.md
index b0927e9..3c56233 100644
--- a/README.md
+++ b/README.md
@@ -30,6 +30,7 @@ and are ready to adopt in your project :)
 from django.db import models
 from pictures.models import PictureField
 
+
 class Profile(models.Model):
     title = models.CharField(max_length=255)
     picture = PictureField(upload_to="avatars")
@@ -77,7 +78,7 @@ python3 -m pip install django-pictures
 # settings.py
 INSTALLED_APPS = [
     # ...
-    'pictures',
+    "pictures",
 ]
 
 # the following are defaults, but you can override them
@@ -96,7 +97,6 @@ PICTURES = {
     "USE_PLACEHOLDERS": True,
     "QUEUE_NAME": "pictures",
     "PROCESSOR": "pictures.tasks.process_picture",
-
 }
 ```
 
@@ -155,8 +155,8 @@ from pictures.models import PictureField
 class Profile(models.Model):
     title = models.CharField(max_length=255)
     picture = PictureField(
-      upload_to="avatars",
-      aspect_ratios=[None, "1/1", "3/2", "16/9"],
+        upload_to="avatars",
+        aspect_ratios=[None, "1/1", "3/2", "16/9"],
     )
 ```
 
@@ -263,6 +263,7 @@ available picture sizes in a DRF serializer.
 from rest_framework import serializers
 from pictures.contrib.rest_framework import PictureField
 
+
 class PictureSerializer(serializers.Serializer):
     picture = PictureField()
 ```
@@ -274,6 +275,7 @@ providing the `aspect_ratios` and `file_types` arguments to the DRF field.
 from rest_framework import serializers
 from pictures.contrib.rest_framework import PictureField
 
+
 class PictureSerializer(serializers.Serializer):
     picture = PictureField(aspect_ratios=["16/9"], file_types=["AVIF"])
 ```
@@ -366,5 +368,4 @@ class MyPicture(Picture):
 [django-rq]: https://github.com/rq/django-rq
 [dramatiq]: https://dramatiq.io/
 [drf]: https://www.django-rest-framework.org/
-[libavif-install]: https://pillow.readthedocs.io/en/latest/installation/building-from-source.html#external-libraries
 [migration]: tests/testapp/migrations/0002_alter_profile_picture.py
diff --git a/pictures/migrations.py b/pictures/migrations.py
index 0dac668..9fe6eba 100644
--- a/pictures/migrations.py
+++ b/pictures/migrations.py
@@ -1,5 +1,3 @@
-from typing import Type
-
 from django.db import models
 from django.db.migrations import AlterField
 from django.db.models import Q
@@ -28,7 +26,7 @@ def database_backwards(self, app_label, schema_editor, from_state, to_state):
         self.alter_picture_field(from_model, to_model)
 
     def alter_picture_field(
-        self, from_model: Type[models.Model], to_model: Type[models.Model]
+        self, from_model: type[models.Model], to_model: type[models.Model]
     ):
         from_field = from_model._meta.get_field(self.name)
         to_field = to_model._meta.get_field(self.name)
@@ -46,7 +44,7 @@ def alter_picture_field(
         ):
             self.update_pictures(from_field, to_model)
 
-    def update_pictures(self, from_field: PictureField, to_model: Type[models.Model]):
+    def update_pictures(self, from_field: PictureField, to_model: type[models.Model]):
         """Remove obsolete pictures and create new ones."""
         for obj in to_model._default_manager.exclude(
             Q(**{self.name: ""}) | Q(**{self.name: None})
@@ -57,13 +55,13 @@ def update_pictures(self, from_field: PictureField, to_model: Type[models.Model]
             )
             new_field_file.update_all(old_field_file)
 
-    def from_picture_field(self, from_model: Type[models.Model]):
+    def from_picture_field(self, from_model: type[models.Model]):
         for obj in from_model._default_manager.all().iterator():
             field_file = getattr(obj, self.name)
             field_file.delete_all()
 
     def to_picture_field(
-        self, from_model: Type[models.Model], to_model: Type[models.Model]
+        self, from_model: type[models.Model], to_model: type[models.Model]
     ):
         from_field = from_model._meta.get_field(self.name)
         if hasattr(from_field.attr_class, "delete_variations"):
diff --git a/pictures/models.py b/pictures/models.py
index 7581d2b..4b3f326 100644
--- a/pictures/models.py
+++ b/pictures/models.py
@@ -92,6 +92,7 @@ def url(self) -> str:
     def height(self) -> int | None:
         if self.aspect_ratio:
             return math.floor(self.width / self.aspect_ratio)
+        return None
 
     @property
     def name(self) -> str:
@@ -129,7 +130,6 @@ def delete(self):
 
 
 class PictureFieldFile(ImageFieldFile):
-
     def __xor__(self, other) -> tuple[set[Picture], set[Picture]]:
         """Return the new and obsolete :class:`Picture` instances."""
         if not isinstance(other, PictureFieldFile):
@@ -176,7 +176,7 @@ def update_all(self, other: PictureFieldFile | None = None):
     @property
     def width(self):
         self._require_file()
-        if self._committed and self.field.width_field:
+        if self._committed and self.field.width_field:  # NoQA SIM102
             if width := getattr(self.instance, self.field.width_field, None):
                 # get width from width field, to avoid loading image
                 return width
@@ -185,7 +185,7 @@ def width(self):
     @property
     def height(self):
         self._require_file()
-        if self._committed and self.field.height_field:
+        if self._committed and self.field.height_field:  # NoQA SIM102
             if height := getattr(self.instance, self.field.height_field, None):
                 # get height from height field, to avoid loading image
                 return height
diff --git a/pictures/tasks.py b/pictures/tasks.py
index 48d0223..a2bf1ba 100644
--- a/pictures/tasks.py
+++ b/pictures/tasks.py
@@ -13,7 +13,6 @@ def noop(*args, **kwargs) -> None:
 
 
 class PictureProcessor(Protocol):
-
     def __call__(
         self,
         storage: tuple[str, list, dict],
@@ -33,11 +32,10 @@ def _process_picture(
     old = old or []
     storage = utils.reconstruct(*storage)
     if new:
-        with storage.open(file_name) as fs:
-            with Image.open(fs) as img:
-                for picture in new:
-                    picture = utils.reconstruct(*picture)
-                    picture.save(img)
+        with storage.open(file_name) as fs, Image.open(fs) as img:
+            for picture in new:
+                picture = utils.reconstruct(*picture)
+                picture.save(img)
 
     for picture in old:
         picture = utils.reconstruct(*picture)
diff --git a/pictures/templatetags/pictures.py b/pictures/templatetags/pictures.py
index 638c7e6..af627a8 100644
--- a/pictures/templatetags/pictures.py
+++ b/pictures/templatetags/pictures.py
@@ -38,18 +38,16 @@ def picture(field_file, img_alt=None, ratio=None, container=None, **kwargs):
             img_attrs[key[4:]] = value
         else:
             raise TypeError(f"Invalid keyword argument: {key}")
-    return tmpl.render(
-        {
-            "field_file": field_file,
-            "alt": img_alt,
-            "ratio": (ratio or "3/2").replace("/", "x"),
-            "sources": sources,
-            "media": utils.sizes(field=field, container_width=container, **breakpoints),
-            "picture_attrs": picture_attrs,
-            "img_attrs": img_attrs,
-            "use_placeholders": settings.USE_PLACEHOLDERS,
-        }
-    )
+    return tmpl.render({
+        "field_file": field_file,
+        "alt": img_alt,
+        "ratio": (ratio or "3/2").replace("/", "x"),
+        "sources": sources,
+        "media": utils.sizes(field=field, container_width=container, **breakpoints),
+        "picture_attrs": picture_attrs,
+        "img_attrs": img_attrs,
+        "use_placeholders": settings.USE_PLACEHOLDERS,
+    })
 
 
 @register.simple_tag()
diff --git a/pictures/utils.py b/pictures/utils.py
index 139cccf..e088042 100644
--- a/pictures/utils.py
+++ b/pictures/utils.py
@@ -79,7 +79,7 @@ def source_set(
 
 @lru_cache
 def placeholder(width: int, height: int, alt):
-    hue = random.randint(0, 360)  # nosec
+    hue = random.randint(0, 360)  # NoQA S311
     img = Image.new("RGB", (width, height), color=f"hsl({hue}, 40%, 80%)")
     draw = ImageDraw.Draw(img)
     draw.line(((0, 0, width, height)), width=3, fill=f"hsl({hue}, 60%, 20%)")
diff --git a/pyproject.toml b/pyproject.toml
index 467008b..18beb83 100644
--- a/pyproject.toml
+++ b/pyproject.toml
@@ -43,13 +43,6 @@ test = [
   "pytest-django",
   "redis",
 ]
-lint = [
-  "bandit==1.8.6",
-  "black==25.9.0",
-  "flake8==7.3.0",
-  "isort==6.1.0",
-  "pydocstyle[toml]==6.3.0",
-]
 dramatiq = [
   "django-dramatiq",
 ]
@@ -102,3 +95,49 @@ skip = ["pictures/_version.py"]
 
 [tool.pydocstyle]
 add_ignore = "D1"
+
+[tool.ruff]
+src = ["flit_gettext", "tests"]
+line-length = 88
+indent-width = 4
+
+[tool.ruff.format]
+quote-style = "double"
+indent-style = "space"
+skip-magic-trailing-comma = false
+line-ending = "auto"
+preview = true
+
+[tool.ruff.lint]
+select = [
+    "D", # pydocstyle
+    "EXE", # flake8-executable
+    "F", # pyflakes
+    "I", # isort
+    "PT", # flake8-pytest-style
+    "RET", # flake8-return
+    "S", # flake8-bandit
+    "SIM", # flake8-simplify
+    "UP", # pyupgrade
+    "W", # pycodestyle warnings
+]
+
+ignore = ["D1"]
+
+[tool.ruff.lint.per-file-ignores]
+"*/test*.py" = ["S101", "E501", "PT011"]
+"*/migrations/*.py" = ["E501"]
+
+[tool.ruff.lint.flake8-pytest-style]
+fixture-parentheses = false
+mark-parentheses = false
+
+[tool.ruff.lint.isort]
+combine-as-imports = true
+split-on-trailing-comma = true
+section-order = ["future", "standard-library", "third-party", "first-party", "local-folder"]
+force-wrap-aliases = true
+known-first-party = ["pictures", "tests"]
+
+[tool.ruff.lint.pydocstyle]
+convention = "pep257"
diff --git a/tests/conftest.py b/tests/conftest.py
index a62707a..8453122 100644
--- a/tests/conftest.py
+++ b/tests/conftest.py
@@ -35,7 +35,7 @@ def large_image_upload_file():
         return SimpleUploadedFile("image.png", output.getvalue())
 
 
-@pytest.fixture(autouse=True, scope="function")
+@pytest.fixture(autouse=True)
 def media_root(settings, tmpdir_factory):
     settings.MEDIA_ROOT = tmpdir_factory.mktemp("media", numbered=True)
 
@@ -45,7 +45,7 @@ def instant_commit(monkeypatch):
     monkeypatch.setattr("django.db.transaction.on_commit", lambda f: f())
 
 
-@pytest.fixture()
+@pytest.fixture
 def stub_worker():
     try:
         import dramatiq
diff --git a/tests/manage.py b/tests/manage.py
index b6b55fc..5bf68d8 100755
--- a/tests/manage.py
+++ b/tests/manage.py
@@ -1,5 +1,6 @@
 #!/usr/bin/env python
 """Django's command-line utility for administrative tasks."""
+
 import os
 import sys
 
diff --git a/tests/test_checks.py b/tests/test_checks.py
index 2882e1a..f0d21ba 100644
--- a/tests/test_checks.py
+++ b/tests/test_checks.py
@@ -7,7 +7,6 @@
 
 def test_placeholder_url_check(settings, monkeypatch):
     """Test that the placeholder URL check works."""
-
     settings.PICTURES["USE_PLACEHOLDERS"] = True
     assert not checks.placeholder_url_check({})
 
diff --git a/tests/test_models.py b/tests/test_models.py
index b745158..00fa40c 100644
--- a/tests/test_models.py
+++ b/tests/test_models.py
@@ -112,7 +112,6 @@ def test_process__copy(self):
 
 
 class TestPictureFieldFile:
-
     @pytest.mark.django_db
     def test_symmetric_difference(self, image_upload_file):
         obj = SimpleModel.objects.create(picture=image_upload_file)
diff --git a/tests/test_utils.py b/tests/test_utils.py
index a569026..3ffc3f0 100644
--- a/tests/test_utils.py
+++ b/tests/test_utils.py
@@ -152,7 +152,6 @@ def url(self):
 
 
 def test_reconstruct(image_upload_file):
-
     picture = TestPicture(
         image_upload_file.name,
         "WEBP",
diff --git a/tests/testapp/migrations/0006_profile_other_picture.py b/tests/testapp/migrations/0006_profile_other_picture.py
index 7a4c640..3b76b9f 100644
--- a/tests/testapp/migrations/0006_profile_other_picture.py
+++ b/tests/testapp/migrations/0006_profile_other_picture.py
@@ -6,7 +6,6 @@
 
 
 class Migration(migrations.Migration):
-
     dependencies = [
         ("testapp", "0005_alter_profile_picture"),
     ]
diff --git a/tests/testapp/settings.py b/tests/testapp/settings.py
index 087a0e2..ed06790 100644
--- a/tests/testapp/settings.py
+++ b/tests/testapp/settings.py
@@ -21,7 +21,7 @@
 # See https://docs.djangoproject.com/en/4.0/howto/deployment/checklist/
 
 # SECURITY WARNING: keep the secret key used in production secret!
-SECRET_KEY = "django-insecure-e=qnar@mq(a8%x&(_x3)4cc)o@8j-3t&62m@8c!5k+3z8_sgsu"
+SECRET_KEY = "django-insecure-e=qnar@mq(a8%x&(_x3)4cc)o@8j-3t&62m@8c!5k+3z8_sgsu"  # NoQA S105
 
 # SECURITY WARNING: don't run with debug turned on in production!
 DEBUG = True