diff --git a/.readthedocs.yaml b/.readthedocs.yaml
index 1edd099ebd..55b5d6fed0 100644
--- a/.readthedocs.yaml
+++ b/.readthedocs.yaml
@@ -5,6 +5,19 @@ build:
   tools:
     python: "3.12"
   jobs:
+    post_checkout:
+      # Cancel pull request builds whose changes are confined to the
+      # zarr-metadata package, which has its own Read the Docs project. Exit
+      # code 183 cancels the build and reports success to the Git provider.
+      # Scoped to PR builds ("external" versions) because origin/main is only
+      # a meaningful diff base there. Read the Docs strips shell quoting from
+      # commands, so the exclude pathspec must use the quote-free :! form,
+      # not ':(exclude)'.
+      - |
+        if [ "$READTHEDOCS_VERSION_TYPE" = "external" ] && git diff --quiet origin/main -- :!packages/zarr-metadata;
+        then
+          exit 183;
+        fi
     install:
       - pip install --upgrade pip
       - pip install .[remote] --group docs
diff --git a/packages/zarr-metadata/.readthedocs.yaml b/packages/zarr-metadata/.readthedocs.yaml
index b89846f570..ace6ccddfd 100644
--- a/packages/zarr-metadata/.readthedocs.yaml
+++ b/packages/zarr-metadata/.readthedocs.yaml
@@ -9,6 +9,16 @@ build:
   tools:
     python: "3.12"
   jobs:
+    post_checkout:
+      # Cancel pull request builds that do not touch this package. Exit code
+      # 183 cancels the build and reports success to the Git provider. Scoped
+      # to PR builds ("external" versions) because origin/main is only a
+      # meaningful diff base there.
+      - |
+        if [ "$READTHEDOCS_VERSION_TYPE" = "external" ] && git diff --quiet origin/main -- packages/zarr-metadata;
+        then
+          exit 183;
+        fi
     install:
       - pip install --upgrade pip
       - pip install ./packages/zarr-metadata --group packages/zarr-metadata/pyproject.toml:docs
diff --git a/packages/zarr-metadata/docs/_static/favicon-96x96.png b/packages/zarr-metadata/docs/_static/favicon-96x96.png
new file mode 100644
index 0000000000..e77977ccf4
Binary files /dev/null and b/packages/zarr-metadata/docs/_static/favicon-96x96.png differ
diff --git a/packages/zarr-metadata/docs/_static/logo_bw.png b/packages/zarr-metadata/docs/_static/logo_bw.png
new file mode 100644
index 0000000000..df1979d3cc
Binary files /dev/null and b/packages/zarr-metadata/docs/_static/logo_bw.png differ
diff --git a/packages/zarr-metadata/docs/index.md b/packages/zarr-metadata/docs/index.md
index 2004f2dc54..58e4f290c6 100644
--- a/packages/zarr-metadata/docs/index.md
+++ b/packages/zarr-metadata/docs/index.md
@@ -1,7 +1,3 @@
----
-title: zarr-metadata
----
-
 # zarr-metadata
 
 Basic tools for modelling Zarr metadata, with minimal dependencies.
diff --git a/packages/zarr-metadata/mkdocs.yml b/packages/zarr-metadata/mkdocs.yml
index 40912d6251..6c4a590b3c 100644
--- a/packages/zarr-metadata/mkdocs.yml
+++ b/packages/zarr-metadata/mkdocs.yml
@@ -1,7 +1,10 @@
 site_name: zarr-metadata
-repo_name: zarr-developers/zarr-python
-repo_url: https://github.com/zarr-developers/zarr-python
-edit_uri: edit/main/packages/zarr-metadata/docs/
+# The package lives in the zarr-python monorepo; point the header source
+# widget at the package directory rather than the repository root.
+repo_name: zarr-python/packages/zarr-metadata
+repo_url: https://github.com/zarr-developers/zarr-python/tree/main/packages/zarr-metadata
+# Absolute because mkdocs would otherwise append this to repo_url's subpath.
+edit_uri: https://github.com/zarr-developers/zarr-python/edit/main/packages/zarr-metadata/docs/
 site_description: Spec-defined metadata types, models, and validators for Zarr v2 and v3.
 site_author: Davis Bennett
 site_url: !ENV [READTHEDOCS_CANONICAL_URL, 'https://zarr-metadata.readthedocs.io/']
@@ -29,6 +32,8 @@ watch:
 theme:
   language: en
   name: material
+  logo: _static/logo_bw.png
+  favicon: _static/favicon-96x96.png
 
   palette:
     # Light mode