Merge pull request #8883 from internet-development/caidanw/app-1408-add-canonical-url

feat: add canonical URLs to improve SEO

bskyweb/templates/home.html

@@ -12,6 +12,7 @@
 
   <meta property="og:url" content="https://bsky.app" />
   <meta name="twitter:url" content="https://bsky.app" />
+  <link rel="canonical" href="https://bsky.app" />
 
   <meta property="og:image" content="https://bsky.app/static/social-card-default-gradient.png" />
   <meta property="twitter:image" content="https://bsky.app/static/social-card-default-gradient.png"  />

bskyweb/templates/post.html

@@ -14,6 +14,7 @@
   <meta property="profile:username" content="{{ profileView.Handle }}">
   {%- if requestURI %}
   <meta property="og:url" content="{{ requestURI }}">
+  <link rel="canonical" href="{{ requestURI }}" />
   {% endif -%}
   {%- if postView.Author.DisplayName %}
   <meta property="og:title" content="{{ postView.Author.DisplayName }} (@{{ postView.Author.Handle }})">

bskyweb/templates/profile.html

@@ -15,6 +15,7 @@
   <meta property="profile:username" content="{{ profileView.Handle }}">
   {%- if requestURI %}
   <meta property="og:url" content="{{ requestURI }}">
+  <link rel="canonical" href="{{ requestURI }}" />
   {% endif -%}
   {%- if profileView.DisplayName %}
   <meta property="og:title" content="{{ profileView.DisplayName }} (@{{ profileView.Handle }})">