fix(seo): add recommended licensing fields to ImageObject JSON-LD

CHANGELOG.md

@@ -32,6 +32,12 @@ aggregate instead: an italic *Catalog* line at the end of the version section an
 
 ### Fixed
 
+- **Image structured data carries the licensing fields Google recommends** — Search
+  Console flagged every implementation page's `ImageObject` for missing `creator`,
+  `copyrightNotice`, `creditText`, and `acquireLicensePage`. The bot-page JSON-LD now
+  ships all four (creator/credit: anyplot; MIT copyright notice; `/legal` as the
+  license page), completing the image-metadata rich result beside the existing
+  `license` field (#10537).
 - **Top-rated thumbnails follow the theme** — the stats page picks a preview per theme, but
   `/insights/dashboard` never shipped one: its `TopImpl` response model carried only the
   legacy `preview_url` (a synonym for the light render), so the top-rated grid showed

api/routers/seo.py

@@ -583,6 +583,13 @@ def _build_source_code_node(spec, impl, lib_name: str, lang_name: str, page_url:
             "encodingFormat": "image/png",
             "caption": f"{spec.title} rendered with {lib_name}",
             "license": "https://opensource.org/licenses/MIT",
+            # Google's image-metadata rich result recommends these four beside
+            # `license`; Search Console flags each absence per page. /legal is
+            # the page that states the MIT terms the renders are offered under.
+            "acquireLicensePage": "https://anyplot.ai/legal",
+            "creator": {"@type": "Organization", "name": "anyplot", "url": "https://anyplot.ai"},
+            "creditText": "anyplot.ai",
+            "copyrightNotice": "© anyplot.ai — MIT License",
         }
     if impl.updated:
         node["dateModified"] = impl.updated.date().isoformat()

tests/unit/api/test_seo_helpers.py

@@ -420,6 +420,16 @@ def test_jsonld_image_is_the_render_not_the_card(self) -> None:
         assert image["contentUrl"] == "https://gcs/preview.png"
         assert image["thumbnailUrl"] == "https://gcs/preview_1200.png"
 
+    def test_jsonld_image_carries_licensing_metadata(self) -> None:
+        """Google's image-metadata rich result recommends these beside `license`;
+        Search Console flags each missing one per page (2026-08 notice)."""
+        image = _extract_jsonld(self._page())["@graph"][1]["image"]
+        assert image["license"] == "https://opensource.org/licenses/MIT"
+        assert image["acquireLicensePage"] == "https://anyplot.ai/legal"
+        assert image["creator"] == {"@type": "Organization", "name": "anyplot", "url": "https://anyplot.ai"}
+        assert image["creditText"] == "anyplot.ai"
+        assert image["copyrightNotice"] == "© anyplot.ai — MIT License"
+
     def test_jsonld_without_render_keeps_card_image(self) -> None:
         impl = _mock_impl("matplotlib", "python", preview=None)
         spec = _mock_spec([impl])