diff --git a/images/migrations/0009_imagevariant_is_primary_variant.py b/images/migrations/0009_imagevariant_is_primary_variant.py
new file mode 100644
index 0000000..b2adcec
--- /dev/null
+++ b/images/migrations/0009_imagevariant_is_primary_variant.py
@@ -0,0 +1,31 @@
+# Generated by Django 5.2 on 2025-05-04 13:36
+
+from django.db import migrations, models
+
+
+def set_primary_variants(apps, schema_editor):
+    Image = apps.get_model("images", "Image")
+
+    for image in Image.objects.all():
+        image.imagevariant_set.filter(
+            is_full_size=True,
+            file_type__in=["jpg", "png"],
+            gaussian_blur=0,
+            brightness=1,
+        ).update(is_primary_variant=True)
+
+
+class Migration(migrations.Migration):
+
+    dependencies = [
+        ("images", "0008_imagevariant_regenerate"),
+    ]
+
+    operations = [
+        migrations.AddField(
+            model_name="imagevariant",
+            name="is_primary_variant",
+            field=models.BooleanField(default=False),
+        ),
+        migrations.RunPython(set_primary_variants),
+    ]
diff --git a/images/models.py b/images/models.py
index 52205ef..118dfc5 100644
--- a/images/models.py
+++ b/images/models.py
@@ -159,6 +159,7 @@ class ImageVariant(models.Model):
     width = models.IntegerField()
     gaussian_blur = models.FloatField(default=0)
     brightness = models.FloatField(default=1)
+    is_primary_variant = models.BooleanField(default=False)
     is_full_size = models.BooleanField(default=False)
     file_type = models.CharField(max_length=10)
     available = models.BooleanField(default=False)