diff --git a/Gulpfile.js b/Gulpfile.js
index 8835e1aa1a..9e0611dcc7 100644
--- a/Gulpfile.js
+++ b/Gulpfile.js
@@ -153,6 +153,7 @@ function jsPackages() {
     require.resolve('chartjs-adapter-moment/dist/chartjs-adapter-moment.min.js'),
     require.resolve('chart.js/dist/chart.min.js'),
     require.resolve('easymde/dist/easymde.min.js'),
+    require.resolve('jdenticon/standalone'),
     path.resolve('node_modules/mathjax/unpacked/**')
   ], { sourcemaps: true })
     .pipe(gulp.dest('dist/js/', { sourcemaps: '.' }))
diff --git a/assets/scss/components/_topic-message.scss b/assets/scss/components/_topic-message.scss
index 8e7b3c169f..933f0ea66b 100644
--- a/assets/scss/components/_topic-message.scss
+++ b/assets/scss/components/_topic-message.scss
@@ -165,7 +165,7 @@ div.msg-are-hidden {
                 overflow: hidden;
             }
 
-            img {
+            .avatar {
                 height: $length-48;
                 width: $length-48;
 
diff --git a/package.json b/package.json
index 955289a191..8cb192a20f 100644
--- a/package.json
+++ b/package.json
@@ -44,6 +44,7 @@
     "gulp-postcss": "10.0.0",
     "gulp-terser-js": "5.2.2",
     "gulp.spritesmith": "6.13.0",
+    "jdenticon": "3.3.0",
     "jquery": "3.7.1",
     "mathjax": "2.7.1",
     "moment": "2.30.1",
diff --git a/templates/base.html b/templates/base.html
index a7f19bf9b6..21e57c686f 100644
--- a/templates/base.html
+++ b/templates/base.html
@@ -241,6 +241,10 @@ <h2 class="subtitle" {% if schema %}itemprop="description"{% endif %}>{{ headlin
 
     {# Javascript stuff start #}
     <script src="{% static "js/jquery.min.js" %}"></script>
+    <script>
+        window.jdenticon_config = {backColor: "#fff"}
+    </script>
+    <script src="{% static "js/jdenticon.min.js" %}"></script>
     {% block extra_js %}
     {% endblock %}
     <script src="{% static "js/script.js" %}"></script>
diff --git a/templates/forum/base.html b/templates/forum/base.html
index dbc9149bb6..b3f13cbe6f 100644
--- a/templates/forum/base.html
+++ b/templates/forum/base.html
@@ -140,7 +140,7 @@ <h4>{{ period|humane_delta }}</h4>
                                         {% with answer=topic.get_last_answer %}
                                             {% if answer %}
                                                 {% with profile=answer.author|profile %}
-                                                    <img src="{% avatar_url profile %}" alt="" class="avatar">
+                                                    {% avatar profile %}
                                                 {% endwith %}
                                                 <span class="topic-last-answer">
                                                     {% trans "Dernière réponse" %}
diff --git a/templates/header.html b/templates/header.html
index 493f6b8815..f81103d9bc 100644
--- a/templates/header.html
+++ b/templates/header.html
@@ -236,7 +236,7 @@ <h1>{% trans "Messagerie privée" %}</h1>
                                 <li>
                                     <a href="{{ notification.url }}">
                                         <header>
-                                            <img src="{% avatar_url notification.author.profile %}" alt="" class="avatar">
+                                            {% avatar notification.author.profile %}
                                             <span class="username">{{ notification.author.username }}</span>
                                             <span class="date">{{ notification.pubdate|format_date:True|capfirst }}</span>
                                         </header>
@@ -274,7 +274,7 @@ <h1 class="dropdown-title">{% trans "Notifications" %}</h1>
                                 <li>
                                     <a href="{{ first_unread.url }}">
                                       <header>
-                                          <img src="{% avatar_url first_unread.author.profile %}" alt="" class="avatar">
+                                          {% avatar first_unread.author.profile %}
                                           <span class="username">{{ first_unread.author.username }}</span>
                                           <span class="date">{{ first_unread.pubdate|format_date:True|capfirst }}</span>
                                       </header>
@@ -344,7 +344,7 @@ <h1 class="dropdown-title">{% trans "Alertes de modération" %}</h1>
                            data-active="open-my-account"
                        {% endif %}
                     >
-                        <img src="{% avatar_url profile %}" alt="Mon compte" class="avatar">
+                        {% avatar profile %}
                         <span class="username label">{{ user.username }}</span>
                     </a>
                 {% endwith %}
diff --git a/templates/member/profile.html b/templates/member/profile.html
index 4f3b0b6443..f88ba71e98 100644
--- a/templates/member/profile.html
+++ b/templates/member/profile.html
@@ -78,7 +78,7 @@
                 <div class="flexpage-title-tool">
                     <div class="avatar">
                         <figure>
-                            <img src="{% avatar_url profile size=200 %}" alt="{% trans "Avatar" %}" />
+                            {% avatar profile size=200 %}
                         </figure>
                     </div>
 
diff --git a/templates/misc/avatar.part.html b/templates/misc/avatar.part.html
new file mode 100644
index 0000000000..b653d14fb3
--- /dev/null
+++ b/templates/misc/avatar.part.html
@@ -0,0 +1,11 @@
+{% load captureas %}
+
+{# Template used by the templatetag "avatar" defined in zds/utils/templatetags/profile.py #}
+
+{% captureas alt_text %}Avatar de {{ username }}{% endcaptureas %}
+
+{% if avatar_url %}
+    <img src="{{ avatar_url }}" alt="{{ alt_text }}" class="avatar" itemprop="image" aria-hidden="true">
+{% else %}
+    <canvas width="{{ avatar_size }}" height="{{ avatar_size }}" data-jdenticon-value="{{ username }}" class="avatar">{{ alt_text }}</canvas>
+{% endif %}
diff --git a/templates/misc/member_item.part.html b/templates/misc/member_item.part.html
index 4c3ca23da7..e6e3fcc12e 100644
--- a/templates/misc/member_item.part.html
+++ b/templates/misc/member_item.part.html
@@ -16,7 +16,7 @@
            {% endif %}>
 
             {% if avatar %}
-                <img src="{% avatar_url profile %}" alt="" class="avatar" itemprop="image" aria-hidden="true" />
+                {% avatar profile %}
             {% endif %}
 
             <span itemprop="name">{{ username }}</span>
diff --git a/templates/misc/message_user.html b/templates/misc/message_user.html
index adf8ac626d..37401bfe50 100644
--- a/templates/misc/message_user.html
+++ b/templates/misc/message_user.html
@@ -5,7 +5,7 @@
 <div class="user">
     {% with profile=member|profile %}
         <a href="{{ member.get_absolute_url }}" class="avatar-link">
-            <img src="{% avatar_url profile %}" alt="" class="avatar">
+            {% avatar profile %}
         </a>
 
         {% include 'misc/badge.part.html' %}
diff --git a/yarn.lock b/yarn.lock
index d90bcf6070..ef1df2fa67 100644
--- a/yarn.lock
+++ b/yarn.lock
@@ -1049,6 +1049,13 @@ caniuse-lite@^1.0.30001587, caniuse-lite@^1.0.30001591:
   resolved "https://registry.yarnpkg.com/caniuse-lite/-/caniuse-lite-1.0.30001596.tgz#da06b79c3d9c3d9958eb307aa832ac68ead79bee"
   integrity sha512-zpkZ+kEr6We7w63ORkoJ2pOfBwBkY/bJrG/UZ90qNb45Isblu8wzDgevEOrRL1r9dWayHjYiiyCMEXPn4DweGQ==
 
+canvas-renderer@~2.2.0:
+  version "2.2.1"
+  resolved "https://registry.yarnpkg.com/canvas-renderer/-/canvas-renderer-2.2.1.tgz#c1d131f78a9799aca8af9679ad0a005052b65550"
+  integrity sha512-RrBgVL5qCEDIXpJ6NrzyRNoTnXxYarqm/cS/W6ERhUJts5UQtt/XPEosGN3rqUkZ4fjBArlnCbsISJ+KCFnIAg==
+  dependencies:
+    "@types/node" "*"
+
 capture-stack-trace@^1.0.0:
   version "1.0.2"
   resolved "https://registry.yarnpkg.com/capture-stack-trace/-/capture-stack-trace-1.0.2.tgz#1c43f6b059d4249e7f3f8724f15f048b927d3a8a"
@@ -4809,6 +4816,13 @@ isurl@^1.0.0-alpha5:
     has-to-string-tag-x "^1.2.0"
     is-object "^1.0.1"
 
+jdenticon@3.3.0:
+  version "3.3.0"
+  resolved "https://registry.yarnpkg.com/jdenticon/-/jdenticon-3.3.0.tgz#64bae9f9b3cf5c2a210e183648117afe3a89b367"
+  integrity sha512-DhuBRNRIybGPeAjMjdHbkIfiwZCCmf8ggu7C49jhp6aJ7DYsZfudnvnTY5/1vgUhrGA7JaDAx1WevnpjCPvaGg==
+  dependencies:
+    canvas-renderer "~2.2.0"
+
 jpeg-js@0.0.4:
   version "0.0.4"
   resolved "https://registry.npmjs.org/jpeg-js/-/jpeg-js-0.0.4.tgz"
diff --git a/zds/member/api/serializers.py b/zds/member/api/serializers.py
index 0f8b614e35..8fa9d7d9cf 100644
--- a/zds/member/api/serializers.py
+++ b/zds/member/api/serializers.py
@@ -16,7 +16,7 @@ class UserListSerializer(serializers.ModelSerializer):
     serializers.
     """
 
-    avatar_url = serializers.CharField(source="profile.get_avatar_url")
+    avatar_url = serializers.CharField(source="profile.get_absolute_avatar_url")
     html_url = serializers.CharField(source="get_absolute_url")
 
     class Meta:
@@ -34,7 +34,7 @@ class ProfileListSerializer(serializers.ModelSerializer):
     html_url = serializers.CharField(source="user.get_absolute_url")
     is_active = serializers.BooleanField(source="user.is_active")
     date_joined = serializers.DateTimeField(source="user.date_joined")
-    avatar_url = serializers.CharField(source="get_avatar_url")
+    avatar_url = serializers.CharField(source="get_absolute_avatar_url")
     permissions = DRYPermissionsField(additional_actions=["ban"])
 
     class Meta:
@@ -78,7 +78,7 @@ class ProfileDetailSerializer(serializers.ModelSerializer):
     email = serializers.EmailField(source="user.email")
     is_active = serializers.BooleanField(source="user.is_active")
     date_joined = serializers.DateTimeField(source="user.date_joined")
-    avatar_url = serializers.CharField(source="get_avatar_url")
+    avatar_url = serializers.CharField(source="get_absolute_avatar_url")
     permissions = DRYPermissionsField(additional_actions=["ban"])
 
     class Meta:
diff --git a/zds/member/api/tests.py b/zds/member/api/tests.py
index 9160869e7b..20103d34bc 100644
--- a/zds/member/api/tests.py
+++ b/zds/member/api/tests.py
@@ -400,7 +400,7 @@ def test_detail_of_the_member(self):
         self.assertEqual(profile.user.is_active, response.data.get("is_active"))
         self.assertIsNotNone(response.data.get("date_joined"))
         self.assertEqual(profile.site, response.data.get("site"))
-        self.assertEqual(profile.get_avatar_url(), response.data.get("avatar_url"))
+        self.assertEqual(profile.get_absolute_avatar_url(), response.data.get("avatar_url"))
         self.assertEqual(profile.biography, response.data.get("biography"))
         self.assertEqual(profile.sign, response.data.get("sign"))
         self.assertFalse(response.data.get("show_email"))
@@ -442,7 +442,7 @@ def test_detail_of_a_member(self):
         self.assertEqual(self.profile.user.is_active, response.data.get("is_active"))
         self.assertIsNotNone(response.data.get("date_joined"))
         self.assertEqual(self.profile.site, response.data.get("site"))
-        self.assertEqual(self.profile.get_avatar_url(), response.data.get("avatar_url"))
+        self.assertEqual(self.profile.get_absolute_avatar_url(), response.data.get("avatar_url"))
         self.assertEqual(self.profile.biography, response.data.get("biography"))
         self.assertEqual(self.profile.sign, response.data.get("sign"))
         self.assertFalse(response.data.get("show_email"))
diff --git a/zds/member/forms.py b/zds/member/forms.py
index 1002d5fd81..b7b2a62899 100644
--- a/zds/member/forms.py
+++ b/zds/member/forms.py
@@ -194,9 +194,7 @@ class MiniProfileForm(forms.Form):
         label="Avatar",
         required=False,
         max_length=Profile._meta.get_field("avatar_url").max_length,
-        widget=forms.TextInput(
-            attrs={"placeholder": _("Lien vers un avatar externe (laissez vide pour utiliser Gravatar).")}
-        ),
+        widget=forms.TextInput(attrs={"placeholder": _("Lien vers un avatar externe.")}),
     )
 
     sign = forms.CharField(
diff --git a/zds/member/management/commands/migrate_from_gravatar.py b/zds/member/management/commands/migrate_from_gravatar.py
new file mode 100644
index 0000000000..2c4890fa1d
--- /dev/null
+++ b/zds/member/management/commands/migrate_from_gravatar.py
@@ -0,0 +1,29 @@
+from hashlib import md5
+from time import sleep
+
+import requests
+from django.core.management.base import BaseCommand
+from django.db.models import Q
+
+from zds.member.models import Profile
+
+
+class Command(BaseCommand):
+    help = "Migrate from Gravatar"
+
+    def handle(self, *args, **options):
+        # We have profiles with either NULL or empty avatar_url field
+        profiles_without_avatar_url = Profile.objects.filter(Q(avatar_url__isnull=True) | Q(avatar_url=""))
+        total = profiles_without_avatar_url.count()
+        i = 1
+        for profile in profiles_without_avatar_url.iterator():
+            hash = md5(profile.user.email.lower().encode("utf-8")).hexdigest()
+            gravatar_url = f"https://secure.gravatar.com/avatar/{hash}"
+            r = requests.get(f"{gravatar_url}?d=404")
+            if r.status_code == 200:
+                profile.avatar_url = f"{gravatar_url}?s=200"
+                profile.save()
+            self.stdout.write(f"\rProgress: {i}/{total}", ending="")
+            i += 1
+            sleep(1)
+        self.stdout.write(self.style.SUCCESS("\nSuccessfully migrated from Gravatar!"))
diff --git a/zds/member/models.py b/zds/member/models.py
index 856e844404..53fefa63d9 100644
--- a/zds/member/models.py
+++ b/zds/member/models.py
@@ -105,22 +105,14 @@ def get_city(self):
 
         return geo_location
 
-    def get_avatar_url(self, size=80):
-        """Get the avatar URL for this profile.
-        If the user has defined a custom URL, use it.
-        If not, use Gravatar.
-        :return: The avatar URL for this profile
-        :rtype: str
-        """
-        if self.avatar_url:
-            if self.avatar_url.startswith(settings.MEDIA_URL):
-                return "{}{}".format(settings.ZDS_APP["site"]["url"], self.avatar_url)
-            else:
-                return self.avatar_url
-        else:
-            return "https://secure.gravatar.com/avatar/{}?d=identicon&s={}".format(
-                md5(self.user.email.lower().encode("utf-8")).hexdigest(), size
-            )
+    def get_absolute_avatar_url(self):
+        """Gets the avatar URL of this profile.
+        :return: The absolute URL of this profile's avatar
+        :rtype: str or None
+        """
+        if self.avatar_url and self.avatar_url.startswith(settings.MEDIA_URL):
+            return settings.ZDS_APP["site"]["url"] + self.avatar_url
+        return self.avatar_url
 
     def get_post_count(self):
         """
diff --git a/zds/member/tests/tests_models.py b/zds/member/tests/tests_models.py
index c21c30b114..2a74b4e608 100644
--- a/zds/member/tests/tests_models.py
+++ b/zds/member/tests/tests_models.py
@@ -29,22 +29,23 @@ def setUp(self):
     def test_get_absolute_url_for_details_of_member(self):
         self.assertEqual(self.user1.get_absolute_url(), f"/@{self.user1.user.username}")
 
-    def test_get_avatar_url(self):
-        # if no url was specified -> gravatar !
-        self.assertIn("gravatar.com", self.user1.get_avatar_url())
+    def test_get_absolute_avatar_url(self):
+        # if no url was specified -> nothing !
+        self.assertEqual(self.user1.get_absolute_avatar_url(), None)
 
         # if an url is specified -> take it !
         user2 = ProfileFactory()
         testurl = "http://test.com/avatar.jpg"
         user2.avatar_url = testurl
-        self.assertEqual(user2.get_avatar_url(), testurl)
+        self.assertEqual(user2.get_absolute_avatar_url(), testurl)
 
         # if url is relative, send absolute url
-        gallerie_avtar = GalleryFactory()
-        image_avatar = ImageFactory(gallery=gallerie_avtar)
+        gallerie_avatar = GalleryFactory()
+        image_avatar = ImageFactory(gallery=gallerie_avatar)
         user2.avatar_url = image_avatar.physical.url
-        self.assertNotEqual(user2.get_avatar_url(), image_avatar.physical.url)
-        self.assertIn("http", user2.get_avatar_url())
+        self.assertNotEqual(user2.get_absolute_avatar_url(), image_avatar.physical.url)
+        self.assertIn(image_avatar.physical.url, user2.get_absolute_avatar_url())
+        self.assertIn("http", user2.get_absolute_avatar_url())
 
     def test_get_post_count(self):
         # Start with 0
diff --git a/zds/mp/api/tests.py b/zds/mp/api/tests.py
index 25b065d0b3..7a0290dcf1 100644
--- a/zds/mp/api/tests.py
+++ b/zds/mp/api/tests.py
@@ -211,7 +211,7 @@ def test_expand_list_of_private_topics_for_author(self):
         self.assertEqual(response.status_code, status.HTTP_200_OK)
         author = response.data.get("results")[0].get("author")
         self.assertEqual(author.get("username"), self.profile.user.username)
-        self.assertEqual(author.get("avatar_url"), self.profile.get_avatar_url())
+        self.assertEqual(author.get("avatar_url"), self.profile.get_absolute_avatar_url())
 
     def test_create_private_topics_with_client_unauthenticated(self):
         """
diff --git a/zds/utils/templatetags/profile.py b/zds/utils/templatetags/profile.py
index bf234cc1b6..87bd6f7283 100644
--- a/zds/utils/templatetags/profile.py
+++ b/zds/utils/templatetags/profile.py
@@ -5,7 +5,6 @@
 from django.core.cache import cache
 
 from zds.member.models import Profile
-from zds.utils.templatetags.remove_url_scheme import remove_url_scheme
 
 register = template.Library()
 
@@ -73,13 +72,11 @@ def state(current_user):
     return user_state
 
 
-@register.simple_tag
-def avatar_url(profile: Profile, size=80) -> str:
-    """
-    Return the URL of the avatar of a profile.
-    If the profile is None, return an empty string.
-    """
+@register.inclusion_tag("misc/avatar.part.html")
+def avatar(profile: Profile, size=80) -> dict:
     if profile is not None:
-        url = profile.get_avatar_url(size)
-        return remove_url_scheme(url)
-    return ""
+        return {
+            "avatar_url": profile.avatar_url,
+            "avatar_size": size,
+            "username": profile.user.username,
+        }