diff --git a/news/changelog-1.11.md b/news/changelog-1.11.md
index 9125563e868..066c539bf2e 100644
--- a/news/changelog-1.11.md
+++ b/news/changelog-1.11.md
@@ -35,6 +35,14 @@ All changes included in 1.11:
 
 - ([#14847](https://github.com/quarto-dev/quarto-cli/pull/14847)): Fix `toc_title` auto-fallback in typst outline template that was ignoring the computed fallback value when `toc_title` is `none`.
 
+## Projects
+
+### Books
+
+- ([#10114](https://github.com/quarto-dev/quarto-cli/issues/10114)): Support `announcement` under the `book` key, which previously had no effect.
+- ([#14276](https://github.com/quarto-dev/quarto-cli/issues/14276)): Support `llms-txt` under the `book` key, which previously had no effect.
+- ([#14879](https://github.com/quarto-dev/quarto-cli/issues/14879)): Support `plausible-analytics`, `back-to-top-navigation`, and `image-alt` under the `book` key, which previously had no effect.
+
 ## Commands
 
 ### `call`
diff --git a/src/project/types/book/book-config.ts b/src/project/types/book/book-config.ts
index bb721e9526d..255947ae3a3 100644
--- a/src/project/types/book/book-config.ts
+++ b/src/project/types/book/book-config.ts
@@ -37,11 +37,15 @@ import {
 import { kProjectRender, ProjectConfig } from "../../types.ts";
 
 import {
+  kAnnouncement,
+  kBackToTopNavigation,
   kBodyFooter,
   kBodyHeader,
   kBreadCrumbNavigation,
   kContents,
   kImage,
+  kImageAlt,
+  kLlmsTxt,
   kMarginFooter,
   kMarginHeader,
   kOpenGraph,
@@ -114,6 +118,7 @@ import {
 import {
   kCookieConsent,
   kGoogleAnalytics,
+  kPlausibleAnalytics,
 } from "../website/website-analytics.ts";
 import { RenderFlags } from "../../../command/render/types.ts";
 import { formatLanguage } from "../../../core/language.ts";
@@ -162,6 +167,7 @@ export async function bookProjectConfig(
     site[kOpenGraph] = book[kOpenGraph];
     site[kTwitterCard] = book[kTwitterCard];
     site[kImage] = book[kImage];
+    site[kImageAlt] = book[kImageAlt];
     site[kMarginHeader] = book[kMarginHeader];
     site[kMarginFooter] = book[kMarginFooter];
     site[kBodyHeader] = book[kBodyHeader];
@@ -169,7 +175,11 @@ export async function bookProjectConfig(
     site[kBookSearch] = book[kBookSearch];
     site[kSiteReaderMode] = book[kSiteReaderMode];
     site[kGoogleAnalytics] = book[kGoogleAnalytics];
+    site[kPlausibleAnalytics] = book[kPlausibleAnalytics];
     site[kCookieConsent] = book[kCookieConsent];
+    site[kAnnouncement] = book[kAnnouncement];
+    site[kBackToTopNavigation] = book[kBackToTopNavigation];
+    site[kLlmsTxt] = book[kLlmsTxt];
     site[kComments] = book[kComments];
     site[kBreadCrumbNavigation] = book[kBreadCrumbNavigation];
     site[kOtherLinks] = book[kOtherLinks];
diff --git a/tests/docs/smoke-all/book/announcement/.gitignore b/tests/docs/smoke-all/book/announcement/.gitignore
new file mode 100644
index 00000000000..1805b039507
--- /dev/null
+++ b/tests/docs/smoke-all/book/announcement/.gitignore
@@ -0,0 +1,3 @@
+/.quarto/
+/_book/
+**/*.quarto_ipynb
diff --git a/tests/docs/smoke-all/book/announcement/_quarto.yml b/tests/docs/smoke-all/book/announcement/_quarto.yml
new file mode 100644
index 00000000000..9c02efcb72a
--- /dev/null
+++ b/tests/docs/smoke-all/book/announcement/_quarto.yml
@@ -0,0 +1,14 @@
+project:
+  type: book
+
+book:
+  title: "Announcement Book"
+  announcement:
+    content: "Some information you should pay attention to"
+    type: primary
+  chapters:
+    - index.qmd
+
+format:
+  html:
+    theme: cosmo
diff --git a/tests/docs/smoke-all/book/announcement/index.qmd b/tests/docs/smoke-all/book/announcement/index.qmd
new file mode 100644
index 00000000000..bff7664ad20
--- /dev/null
+++ b/tests/docs/smoke-all/book/announcement/index.qmd
@@ -0,0 +1,13 @@
+---
+_quarto:
+  tests:
+    html:
+      ensureHtmlElements:
+        -
+          - 'div#quarto-announcement.alert-primary div.quarto-announcement-content'
+---
+
+# Preface {.unnumbered}
+
+An announcement configured under the `book` key must render the announcement
+bar in the book website output.
diff --git a/tests/docs/smoke-all/book/back-to-top-navigation/.gitignore b/tests/docs/smoke-all/book/back-to-top-navigation/.gitignore
new file mode 100644
index 00000000000..1805b039507
--- /dev/null
+++ b/tests/docs/smoke-all/book/back-to-top-navigation/.gitignore
@@ -0,0 +1,3 @@
+/.quarto/
+/_book/
+**/*.quarto_ipynb
diff --git a/tests/docs/smoke-all/book/back-to-top-navigation/_quarto.yml b/tests/docs/smoke-all/book/back-to-top-navigation/_quarto.yml
new file mode 100644
index 00000000000..3696b2d17b0
--- /dev/null
+++ b/tests/docs/smoke-all/book/back-to-top-navigation/_quarto.yml
@@ -0,0 +1,12 @@
+project:
+  type: book
+
+book:
+  title: "Back To Top Book"
+  back-to-top-navigation: true
+  chapters:
+    - index.qmd
+
+format:
+  html:
+    theme: cosmo
diff --git a/tests/docs/smoke-all/book/back-to-top-navigation/index.qmd b/tests/docs/smoke-all/book/back-to-top-navigation/index.qmd
new file mode 100644
index 00000000000..f23cff94b63
--- /dev/null
+++ b/tests/docs/smoke-all/book/back-to-top-navigation/index.qmd
@@ -0,0 +1,13 @@
+---
+_quarto:
+  tests:
+    html:
+      ensureHtmlElements:
+        -
+          - 'a#quarto-back-to-top[role="button"]'
+---
+
+# Preface {.unnumbered}
+
+`back-to-top-navigation` under the `book` key must add the back to top control
+to the book website output.
diff --git a/tests/docs/smoke-all/book/image-alt/.gitignore b/tests/docs/smoke-all/book/image-alt/.gitignore
new file mode 100644
index 00000000000..1805b039507
--- /dev/null
+++ b/tests/docs/smoke-all/book/image-alt/.gitignore
@@ -0,0 +1,3 @@
+/.quarto/
+/_book/
+**/*.quarto_ipynb
diff --git a/tests/docs/smoke-all/book/image-alt/_quarto.yml b/tests/docs/smoke-all/book/image-alt/_quarto.yml
new file mode 100644
index 00000000000..4f5bd8ee46d
--- /dev/null
+++ b/tests/docs/smoke-all/book/image-alt/_quarto.yml
@@ -0,0 +1,16 @@
+project:
+  type: book
+
+book:
+  title: "Image Alt Book"
+  site-url: "https://example.com"
+  open-graph: true
+  twitter-card: true
+  image: cover.png
+  image-alt: "A description of the preview image"
+  chapters:
+    - index.qmd
+
+format:
+  html:
+    theme: cosmo
diff --git a/tests/docs/smoke-all/book/image-alt/cover.png b/tests/docs/smoke-all/book/image-alt/cover.png
new file mode 100644
index 00000000000..e1f5bc61d11
Binary files /dev/null and b/tests/docs/smoke-all/book/image-alt/cover.png differ
diff --git a/tests/docs/smoke-all/book/image-alt/index.qmd b/tests/docs/smoke-all/book/image-alt/index.qmd
new file mode 100644
index 00000000000..0cbcd460c5b
--- /dev/null
+++ b/tests/docs/smoke-all/book/image-alt/index.qmd
@@ -0,0 +1,14 @@
+---
+_quarto:
+  tests:
+    html:
+      ensureHtmlElements:
+        -
+          - 'meta[property="og:image:alt"][content="A description of the preview image"]'
+          - 'meta[name="twitter:image:alt"][content="A description of the preview image"]'
+---
+
+# Preface {.unnumbered}
+
+`image-alt` under the `book` key must set the alt text on the social metadata
+preview image.
diff --git a/tests/docs/smoke-all/book/llms-txt/.gitignore b/tests/docs/smoke-all/book/llms-txt/.gitignore
new file mode 100644
index 00000000000..1805b039507
--- /dev/null
+++ b/tests/docs/smoke-all/book/llms-txt/.gitignore
@@ -0,0 +1,3 @@
+/.quarto/
+/_book/
+**/*.quarto_ipynb
diff --git a/tests/docs/smoke-all/book/llms-txt/_quarto.yml b/tests/docs/smoke-all/book/llms-txt/_quarto.yml
new file mode 100644
index 00000000000..20c1bb64286
--- /dev/null
+++ b/tests/docs/smoke-all/book/llms-txt/_quarto.yml
@@ -0,0 +1,13 @@
+project:
+  type: book
+
+book:
+  title: "llms-txt Book"
+  site-url: "https://example.com"
+  llms-txt: true
+  chapters:
+    - index.qmd
+
+format:
+  html:
+    theme: cosmo
diff --git a/tests/docs/smoke-all/book/llms-txt/index.qmd b/tests/docs/smoke-all/book/llms-txt/index.qmd
new file mode 100644
index 00000000000..82528270613
--- /dev/null
+++ b/tests/docs/smoke-all/book/llms-txt/index.qmd
@@ -0,0 +1,16 @@
+---
+_quarto:
+  render-project: true
+  tests:
+    html:
+      ensureLlmsTxtExists: true
+      ensureLlmsMdExists: true
+      ensureLlmsTxtRegexMatches:
+        - ['^# llms-txt Book', '^## Pages', '\[.*\]\(.*\.llms\.md\)']
+        - []
+---
+
+# Preface {.unnumbered}
+
+`llms-txt` set under the `book` key must generate the llms.txt index, the same
+way it does under `website`.
diff --git a/tests/docs/smoke-all/book/plausible-analytics/.gitignore b/tests/docs/smoke-all/book/plausible-analytics/.gitignore
new file mode 100644
index 00000000000..1805b039507
--- /dev/null
+++ b/tests/docs/smoke-all/book/plausible-analytics/.gitignore
@@ -0,0 +1,3 @@
+/.quarto/
+/_book/
+**/*.quarto_ipynb
diff --git a/tests/docs/smoke-all/book/plausible-analytics/_plausible_snippet.html b/tests/docs/smoke-all/book/plausible-analytics/_plausible_snippet.html
new file mode 100644
index 00000000000..92af7a8e81f
--- /dev/null
+++ b/tests/docs/smoke-all/book/plausible-analytics/_plausible_snippet.html
@@ -0,0 +1 @@
+<script async src="https://plausible.io/js/pa-BOOKFILE99.js"></script>
diff --git a/tests/docs/smoke-all/book/plausible-analytics/_quarto.yml b/tests/docs/smoke-all/book/plausible-analytics/_quarto.yml
new file mode 100644
index 00000000000..704bf271bc3
--- /dev/null
+++ b/tests/docs/smoke-all/book/plausible-analytics/_quarto.yml
@@ -0,0 +1,13 @@
+project:
+  type: book
+
+book:
+  title: "Plausible Analytics Book"
+  chapters:
+    - index.qmd
+  plausible-analytics:
+    path: _plausible_snippet.html
+
+format:
+  html:
+    theme: cosmo
diff --git a/tests/docs/smoke-all/book/plausible-analytics/index.qmd b/tests/docs/smoke-all/book/plausible-analytics/index.qmd
new file mode 100644
index 00000000000..c57e3f1d52d
--- /dev/null
+++ b/tests/docs/smoke-all/book/plausible-analytics/index.qmd
@@ -0,0 +1,13 @@
+---
+_quarto:
+  tests:
+    html:
+      ensureHtmlElements:
+        -
+          - 'script[async][src="https://plausible.io/js/pa-BOOKFILE99.js"]'
+---
+
+# Preface {.unnumbered}
+
+Plausible Analytics configured under the `book` key must be applied to the
+rendered book website, the same way `google-analytics` is.
diff --git a/tests/docs/smoke-all/website/llms-txt-drafts/.gitignore b/tests/docs/smoke-all/website/llms-txt-drafts/.gitignore
index c96a27a6e40..1252e779970 100644
--- a/tests/docs/smoke-all/website/llms-txt-drafts/.gitignore
+++ b/tests/docs/smoke-all/website/llms-txt-drafts/.gitignore
@@ -2,6 +2,8 @@
 *.html
 *.llms.md
 llms.txt
+search.json
+site_libs/
 *_files/
 
 **/*.quarto_ipynb
diff --git a/tests/docs/smoke-all/website/llms-txt-listing/.gitignore b/tests/docs/smoke-all/website/llms-txt-listing/.gitignore
index c96a27a6e40..1252e779970 100644
--- a/tests/docs/smoke-all/website/llms-txt-listing/.gitignore
+++ b/tests/docs/smoke-all/website/llms-txt-listing/.gitignore
@@ -2,6 +2,8 @@
 *.html
 *.llms.md
 llms.txt
+search.json
+site_libs/
 *_files/
 
 **/*.quarto_ipynb