diff --git a/activities/migrations/0019_alter_postattachment_focal_x_and_more.py b/activities/migrations/0019_alter_postattachment_focal_x_and_more.py
new file mode 100644
index 0000000..111df91
--- /dev/null
+++ b/activities/migrations/0019_alter_postattachment_focal_x_and_more.py
@@ -0,0 +1,23 @@
+# Generated by Django 4.2.3 on 2023-10-30 07:44
+
+from django.db import migrations, models
+
+
+class Migration(migrations.Migration):
+
+    dependencies = [
+        ("activities", "0018_timelineevent_dismissed"),
+    ]
+
+    operations = [
+        migrations.AlterField(
+            model_name="postattachment",
+            name="focal_x",
+            field=models.FloatField(blank=True, null=True),
+        ),
+        migrations.AlterField(
+            model_name="postattachment",
+            name="focal_y",
+            field=models.FloatField(blank=True, null=True),
+        ),
+    ]
diff --git a/activities/models/post_attachment.py b/activities/models/post_attachment.py
index 4e1c9c3..ed17558 100644
--- a/activities/models/post_attachment.py
+++ b/activities/models/post_attachment.py
@@ -57,8 +57,8 @@ class PostAttachment(StatorModel):
 
     width = models.IntegerField(null=True, blank=True)
     height = models.IntegerField(null=True, blank=True)
-    focal_x = models.IntegerField(null=True, blank=True)
-    focal_y = models.IntegerField(null=True, blank=True)
+    focal_x = models.FloatField(null=True, blank=True)
+    focal_y = models.FloatField(null=True, blank=True)
     blurhash = models.TextField(null=True, blank=True)
 
     created = models.DateTimeField(auto_now_add=True)
@@ -113,7 +113,7 @@ class PostAttachment(StatorModel):
     ### ActivityPub ###
 
     def to_ap(self):
-        return {
+        ap = {
             "url": self.file.url,
             "name": self.name,
             "type": "Document",
@@ -122,6 +122,10 @@ class PostAttachment(StatorModel):
             "mediaType": self.mimetype,
             "blurhash": self.blurhash,
         }
+        if self.is_image() and self.focal_x and self.focal_y:
+            ap["type"] = "Image"
+            ap["focalPoint"] = [self.focal_x, self.focal_y]
+        return ap
 
     ### Mastodon Client API ###
 
diff --git a/tests/activities/models/test_post_attachment.py b/tests/activities/models/test_post_attachment.py
new file mode 100644
index 0000000..26f494e
--- /dev/null
+++ b/tests/activities/models/test_post_attachment.py
@@ -0,0 +1,111 @@
+import pytest
+from django.core.files.base import ContentFile
+
+from activities.models import Post, PostAttachment, PostAttachmentStates
+from core.files import resize_image
+
+
+@pytest.mark.django_db
+def test_remote_attachment(remote_identity, config_system):
+    """
+    Tests that remote post attachments and their metadata work
+    """
+
+    post = Post.by_ap(
+        data={
+            "id": "https://remote.test/posts/1",
+            "type": "Note",
+            "content": "Hi World",
+            "attributedTo": remote_identity.actor_uri,
+            "published": "2022-12-23T10:50:54Z",
+            "attachment": {
+                "type": "Image",
+                "url": "https://remote.test/posts/1/attachment/1",
+                "focalPoint": [-0.5, 0.25],
+                "mediaType": "image/png",
+                "name": "Test attachment",
+                "width": 100,
+                "height": 100,
+            },
+        },
+        create=True,
+    )
+    attachment = post.attachments.first()
+    assert attachment.remote_url == "https://remote.test/posts/1/attachment/1"
+    assert attachment.name == "Test attachment"
+    assert attachment.focal_x == -0.5
+    assert attachment.focal_y == 0.25
+
+    mastodon = post.to_mastodon_json()
+
+    assert mastodon["media_attachments"][0]["description"] == "Test attachment"
+    assert mastodon["media_attachments"][0]["meta"]["focus"]["x"] == -0.5
+    assert mastodon["media_attachments"][0]["meta"]["focus"]["y"] == 0.25
+
+
+@pytest.mark.django_db
+def test_local_attachment(identity, config_system):
+    """
+    Tests that local post attachments and their metadata work
+    """
+    attachments = []
+    attachment = PostAttachment.objects.create(
+        mimetype="image/png",
+        name="Test attachment",
+        author=identity,
+        width=100,
+        height=100,
+        focal_x=-0.5,
+        focal_y=0.25,
+        state=PostAttachmentStates.fetched,
+    )
+    # 1x1 PNG
+    file = resize_image(
+        # 1x1 PNG
+        ContentFile(
+            b"\x89PNG\r\n\x1a\n\x00\x00\x00\rIHDR\x00\x00\x00\x01\x00\x00\x00\x01\x01\x03\x00\x00\x00%\xdbV\xca\x00\x00\x00\x03PLTE\x00\x00\x00\xa7z=\xda\x00\x00\x00\x01tRNS\x00@\xe6\xd8f\x00\x00\x00\nIDAT\x08\xd7c`\x00\x00\x00\x02\x00\x01\xe2!\xbc3\x00\x00\x00\x00IEND\xaeB`\x82"
+        ),
+        size=(100, 100),
+        cover=False,
+    )
+    attachment.file.save(file.name, file)
+    attachments.append(attachment)
+    # another copy of the attachment without a focal point
+    attachment2 = PostAttachment.objects.create(
+        mimetype="image/png",
+        name="Test attachment 2",
+        author=identity,
+        width=100,
+        height=100,
+        state=PostAttachmentStates.fetched,
+    )
+    attachment2.file.save(file.name, file)
+    attachments.append(attachment2)
+    # Create the post
+    post = Post.create_local(
+        author=identity,
+        content="Hi World",
+        attachments=attachments,
+    )
+
+    attachments = post.attachments.all()
+    # first attachment has a focal point
+    assert attachments[0].name == "Test attachment"
+    assert attachments[0].focal_x == -0.5
+    assert attachments[0].focal_y == 0.25
+    # second attachment doesn't have a focal point
+    assert attachments[1].name == "Test attachment 2"
+    assert attachments[1].focal_x is None
+    assert attachments[1].focal_y is None
+
+    # same in the AP JSON
+    ap = post.to_ap()
+
+    # first attachment has a focal point
+    assert ap["attachment"][0]["name"] == "Test attachment"
+    assert ap["attachment"][0]["focalPoint"][0] == -0.5
+    assert ap["attachment"][0]["focalPoint"][1] == 0.25
+
+    # second attachment doesn't have a focal point
+    assert ap["attachment"][1]["name"] == "Test attachment 2"
+    assert "focalPoint" not in ap["attachment"][1]