diff --git a/doc/.sphinx/_static/custom.css b/doc/.sphinx/_static/custom.css
index cad94b74c..45f2a9ca0 100644
--- a/doc/.sphinx/_static/custom.css
+++ b/doc/.sphinx/_static/custom.css
@@ -187,3 +187,25 @@ details summary {
     color: var(--color-version-popup);
     font-weight: bolder;
 }
+
+/* Code-block copybutton invisible by default
+   (overriding Furo config to achieve default copybutton setting). */
+.highlight button.copybtn {
+   opacity: 0;
+}
+
+/* Mimicking the 'Give feedback' button for UX consistency */
+.sidebar-search-container input[type=submit] {
+    color: #FFFFFF;
+    border: 2px solid #D6410D;
+    padding: var(--sidebar-search-input-spacing-vertical) var(--sidebar-search-input-spacing-horizontal);
+    background: #D6410D;
+    font-weight: bold;
+    font-size: var(--font-size--small);
+    cursor: pointer;
+}
+
+.sidebar-search-container input[type=submit]:hover {
+    text-decoration: underline;
+}
+
diff --git a/doc/.sphinx/_static/github_issue_links.css b/doc/.sphinx/_static/github_issue_links.css
index af4be86ce..db166ed95 100644
--- a/doc/.sphinx/_static/github_issue_links.css
+++ b/doc/.sphinx/_static/github_issue_links.css
@@ -4,7 +4,7 @@
 .github-issue-link {
     font-size: var(--font-size--small);
     font-weight: bold;
-    background-color: #DD4814;
+    background-color: #D6410D;
     padding: 13px 23px;
     text-decoration: none;
 }
diff --git a/doc/.sphinx/_templates/sidebar/search.html b/doc/.sphinx/_templates/sidebar/search.html
new file mode 100644
index 000000000..644a5ef6a
--- /dev/null
+++ b/doc/.sphinx/_templates/sidebar/search.html
@@ -0,0 +1,7 @@
+<form class="sidebar-search-container" method="get" action="{{ pathto('search') }}" role="search">
+    <input class="sidebar-search" placeholder="{{ _("Search") }}" name="q" aria-label="{{ _("Search" ) }}">
+    <input type="submit" value="Go">
+    <input type="hidden" name="check_keywords" value="yes">
+    <input type="hidden" name="area" value="default">
+  </form>
+  <div id="searchbox"></div>
diff --git a/doc/conf.py b/doc/conf.py
index a2f1d6ad4..74f816618 100644
--- a/doc/conf.py
+++ b/doc/conf.py
@@ -19,10 +19,10 @@
     'sphinx_design',
     'sphinx_tabs.tabs',
     'sphinx_reredirects',
-    'youtube-links',
-    'related-links',
-    'custom-rst-roles',
-    'terminal-output',
+    'canonical.youtube-links',
+    'canonical.related-links',
+    'canonical.custom-rst-roles',
+    'canonical.terminal-output',
     'sphinx_copybutton',
     'sphinxext.opengraph',
     'myst_parser',
diff --git a/doc/howto/report-bugs.rst b/doc/howto/report-bugs.rst
index 23402aff3..46831cce1 100644
--- a/doc/howto/report-bugs.rst
+++ b/doc/howto/report-bugs.rst
@@ -29,6 +29,4 @@ To create a Launchpad bug report based on the contents of a crash report, use th
 
 To run ``apport-cli`` in the installer environment, switch to a shell. This way, ``apport`` can not open a browser to for you to complete the report. Instead, it provides a URL for completing the report, which you can do on another computer.
 
-.. note::
-
-Issues for the Subiquity autoinstaller are `tracked in Launchpad <https://bugs.launchpad.net/subiquity>`_.
+.. note:: Issues for the Subiquity autoinstaller are `tracked in Launchpad <https://bugs.launchpad.net/subiquity>`_.
diff --git a/doc/intro-to-autoinstall.rst b/doc/intro-to-autoinstall.rst
index 14cfc4175..3371ff164 100644
--- a/doc/intro-to-autoinstall.rst
+++ b/doc/intro-to-autoinstall.rst
@@ -17,7 +17,7 @@ any interaction.
 
 
 Differences from `debian-installer` preseeding
-============================================
+==============================================
 
 *preseeds* are the way to automate an installer based on `debian-installer`
 (also known as d-i).
@@ -43,7 +43,7 @@ There are 2 ways to provide the autoinstall configuration:
  * Directly on the installation media
 
 Autoinstall by way of `cloud-config`
-----------------------------------
+------------------------------------
 
 The suggested way of providing autoinstall configuration to the Ubuntu installer is
 via cloud-init. This allows the configuration to be applied to the installer