diff --git a/packages/create-docusaurus/templates/classic/docusaurus.config.js b/packages/create-docusaurus/templates/classic/docusaurus.config.js
index d8e50d95a0..44bdc2a357 100644
--- a/packages/create-docusaurus/templates/classic/docusaurus.config.js
+++ b/packages/create-docusaurus/templates/classic/docusaurus.config.js
@@ -14,7 +14,7 @@ const config = {
   favicon: 'img/favicon.ico',
 
   // Set the production url of your site here
-  url: 'https://your-docusaurus-test-site.com',
+  url: 'https://your-docusaurus-site.example.com',
   // Set the /<baseUrl>/ pathname under which your site is served
   // For GitHub pages deployment, it is often '/<projectName>/'
   baseUrl: '/',
diff --git a/packages/docusaurus-plugin-content-blog/src/__tests__/__fixtures__/website/build-snap/blog/2018/12/14/Happy-First-Birthday-Slash/index.html b/packages/docusaurus-plugin-content-blog/src/__tests__/__fixtures__/website/build-snap/blog/2018/12/14/Happy-First-Birthday-Slash/index.html
index 49dfac178e..9b29e228c8 100644
--- a/packages/docusaurus-plugin-content-blog/src/__tests__/__fixtures__/website/build-snap/blog/2018/12/14/Happy-First-Birthday-Slash/index.html
+++ b/packages/docusaurus-plugin-content-blog/src/__tests__/__fixtures__/website/build-snap/blog/2018/12/14/Happy-First-Birthday-Slash/index.html
@@ -5,7 +5,7 @@
 <meta name="viewport" content="width=device-width,initial-scale=1">
 <meta name="generator" content="Docusaurus v0.0.0-4458">
 <link rel="alternate" type="application/rss+xml" href="/foo/blog/rss.xml" title="My Site RSS Feed">
-<link rel="alternate" type="application/atom+xml" href="/foo/blog/atom.xml" title="My Site Atom Feed"><title data-react-helmet="true">Happy 1st Birthday Slash! | My Site</title><meta data-react-helmet="true" name="twitter:card" content="summary_large_image"><meta data-react-helmet="true" property="og:url" content="https://your-docusaurus-test-site.com/foo/blog/2018/12/14/Happy-First-Birthday-Slash"><meta data-react-helmet="true" name="docusaurus_locale" content="en"><meta data-react-helmet="true" name="docusaurus_tag" content="default"><meta data-react-helmet="true" property="og:title" content="Happy 1st Birthday Slash! | My Site"><meta data-react-helmet="true" name="description" content="Happy birthday!"><meta data-react-helmet="true" property="og:description" content="Happy birthday!"><meta data-react-helmet="true" property="og:type" content="article"><meta data-react-helmet="true" property="article:published_time" content="2018-12-14T00:00:00.000Z"><meta data-react-helmet="true" property="article:tag" content="birthday"><link data-react-helmet="true" rel="icon" href="/foo/img/favicon.ico"><link data-react-helmet="true" rel="canonical" href="https://your-docusaurus-test-site.com/foo/blog/2018/12/14/Happy-First-Birthday-Slash"><link data-react-helmet="true" rel="alternate" href="https://your-docusaurus-test-site.com/foo/blog/2018/12/14/Happy-First-Birthday-Slash" hreflang="en"><link data-react-helmet="true" rel="alternate" href="https://your-docusaurus-test-site.com/foo/blog/2018/12/14/Happy-First-Birthday-Slash" hreflang="x-default"><link rel="stylesheet" href="/foo/assets/css/styles.3c7ca81b.css">
+<link rel="alternate" type="application/atom+xml" href="/foo/blog/atom.xml" title="My Site Atom Feed"><title data-react-helmet="true">Happy 1st Birthday Slash! | My Site</title><meta data-react-helmet="true" name="twitter:card" content="summary_large_image"><meta data-react-helmet="true" property="og:url" content="https://your-docusaurus-site.example.com/foo/blog/2018/12/14/Happy-First-Birthday-Slash"><meta data-react-helmet="true" name="docusaurus_locale" content="en"><meta data-react-helmet="true" name="docusaurus_tag" content="default"><meta data-react-helmet="true" property="og:title" content="Happy 1st Birthday Slash! | My Site"><meta data-react-helmet="true" name="description" content="Happy birthday!"><meta data-react-helmet="true" property="og:description" content="Happy birthday!"><meta data-react-helmet="true" property="og:type" content="article"><meta data-react-helmet="true" property="article:published_time" content="2018-12-14T00:00:00.000Z"><meta data-react-helmet="true" property="article:tag" content="birthday"><link data-react-helmet="true" rel="icon" href="/foo/img/favicon.ico"><link data-react-helmet="true" rel="canonical" href="https://your-docusaurus-site.example.com/foo/blog/2018/12/14/Happy-First-Birthday-Slash"><link data-react-helmet="true" rel="alternate" href="https://your-docusaurus-site.example.com/foo/blog/2018/12/14/Happy-First-Birthday-Slash" hreflang="en"><link data-react-helmet="true" rel="alternate" href="https://your-docusaurus-site.example.com/foo/blog/2018/12/14/Happy-First-Birthday-Slash" hreflang="x-default"><link rel="stylesheet" href="/foo/assets/css/styles.3c7ca81b.css">
 <link rel="preload" href="/foo/assets/js/runtime~main.c1b53ef5.js" as="script">
 <link rel="preload" href="/foo/assets/js/main.5cb79c9b.js" as="script">
 </head>
diff --git a/packages/docusaurus-plugin-content-blog/src/__tests__/__fixtures__/website/build-snap/blog/archive/index.html b/packages/docusaurus-plugin-content-blog/src/__tests__/__fixtures__/website/build-snap/blog/archive/index.html
index 403fe3174d..773a2ba0a2 100644
--- a/packages/docusaurus-plugin-content-blog/src/__tests__/__fixtures__/website/build-snap/blog/archive/index.html
+++ b/packages/docusaurus-plugin-content-blog/src/__tests__/__fixtures__/website/build-snap/blog/archive/index.html
@@ -5,7 +5,7 @@
 <meta name="viewport" content="width=device-width,initial-scale=1">
 <meta name="generator" content="Docusaurus v0.0.0-4458">
 <link rel="alternate" type="application/rss+xml" href="/foo/blog/rss.xml" title="My Site RSS Feed">
-<link rel="alternate" type="application/atom+xml" href="/foo/blog/atom.xml" title="My Site Atom Feed"><title data-react-helmet="true">Archive | My Site</title><meta data-react-helmet="true" property="og:title" content="Archive | My Site"><meta data-react-helmet="true" name="twitter:card" content="summary_large_image"><meta data-react-helmet="true" name="description" content="Archive"><meta data-react-helmet="true" property="og:description" content="Archive"><meta data-react-helmet="true" property="og:url" content="https://your-docusaurus-test-site.com/foo/blog/archive"><meta data-react-helmet="true" name="docusaurus_locale" content="en"><meta data-react-helmet="true" name="docusaurus_tag" content="default"><link data-react-helmet="true" rel="icon" href="/foo/img/favicon.ico"><link data-react-helmet="true" rel="canonical" href="https://your-docusaurus-test-site.com/foo/blog/archive"><link data-react-helmet="true" rel="alternate" href="https://your-docusaurus-test-site.com/foo/blog/archive" hreflang="en"><link data-react-helmet="true" rel="alternate" href="https://your-docusaurus-test-site.com/foo/blog/archive" hreflang="x-default"><link rel="stylesheet" href="/foo/assets/css/styles.3c7ca81b.css">
+<link rel="alternate" type="application/atom+xml" href="/foo/blog/atom.xml" title="My Site Atom Feed"><title data-react-helmet="true">Archive | My Site</title><meta data-react-helmet="true" property="og:title" content="Archive | My Site"><meta data-react-helmet="true" name="twitter:card" content="summary_large_image"><meta data-react-helmet="true" name="description" content="Archive"><meta data-react-helmet="true" property="og:description" content="Archive"><meta data-react-helmet="true" property="og:url" content="https://your-docusaurus-site.example.com/foo/blog/archive"><meta data-react-helmet="true" name="docusaurus_locale" content="en"><meta data-react-helmet="true" name="docusaurus_tag" content="default"><link data-react-helmet="true" rel="icon" href="/foo/img/favicon.ico"><link data-react-helmet="true" rel="canonical" href="https://your-docusaurus-site.example.com/foo/blog/archive"><link data-react-helmet="true" rel="alternate" href="https://your-docusaurus-site.example.com/foo/blog/archive" hreflang="en"><link data-react-helmet="true" rel="alternate" href="https://your-docusaurus-site.example.com/foo/blog/archive" hreflang="x-default"><link rel="stylesheet" href="/foo/assets/css/styles.3c7ca81b.css">
 <link rel="preload" href="/foo/assets/js/runtime~main.c1b53ef5.js" as="script">
 <link rel="preload" href="/foo/assets/js/main.5cb79c9b.js" as="script">
 </head>
@@ -15,4 +15,4 @@
 <script src="/foo/assets/js/runtime~main.c1b53ef5.js"></script>
 <script src="/foo/assets/js/main.5cb79c9b.js"></script>
 </body>
-</html>
\ No newline at end of file
+</html>
diff --git a/packages/docusaurus-plugin-content-blog/src/__tests__/__fixtures__/website/build-snap/blog/date-matter/index.html b/packages/docusaurus-plugin-content-blog/src/__tests__/__fixtures__/website/build-snap/blog/date-matter/index.html
index 8ebb7561b1..f6cac5aa9c 100644
--- a/packages/docusaurus-plugin-content-blog/src/__tests__/__fixtures__/website/build-snap/blog/date-matter/index.html
+++ b/packages/docusaurus-plugin-content-blog/src/__tests__/__fixtures__/website/build-snap/blog/date-matter/index.html
@@ -5,7 +5,7 @@
 <meta name="viewport" content="width=device-width,initial-scale=1">
 <meta name="generator" content="Docusaurus v0.0.0-4458">
 <link rel="alternate" type="application/rss+xml" href="/foo/blog/rss.xml" title="My Site RSS Feed">
-<link rel="alternate" type="application/atom+xml" href="/foo/blog/atom.xml" title="My Site Atom Feed"><title data-react-helmet="true">date-matter | My Site</title><meta data-react-helmet="true" name="twitter:card" content="summary_large_image"><meta data-react-helmet="true" property="og:url" content="https://your-docusaurus-test-site.com/foo/blog/date-matter"><meta data-react-helmet="true" name="docusaurus_locale" content="en"><meta data-react-helmet="true" name="docusaurus_tag" content="default"><meta data-react-helmet="true" property="og:title" content="date-matter | My Site"><meta data-react-helmet="true" name="description" content="date inside front matter"><meta data-react-helmet="true" property="og:description" content="date inside front matter"><meta data-react-helmet="true" property="og:type" content="article"><meta data-react-helmet="true" property="article:published_time" content="2019-01-01T00:00:00.000Z"><meta data-react-helmet="true" property="article:tag" content="date"><link data-react-helmet="true" rel="icon" href="/foo/img/favicon.ico"><link data-react-helmet="true" rel="canonical" href="https://your-docusaurus-test-site.com/foo/blog/date-matter"><link data-react-helmet="true" rel="alternate" href="https://your-docusaurus-test-site.com/foo/blog/date-matter" hreflang="en"><link data-react-helmet="true" rel="alternate" href="https://your-docusaurus-test-site.com/foo/blog/date-matter" hreflang="x-default"><link rel="stylesheet" href="/foo/assets/css/styles.3c7ca81b.css">
+<link rel="alternate" type="application/atom+xml" href="/foo/blog/atom.xml" title="My Site Atom Feed"><title data-react-helmet="true">date-matter | My Site</title><meta data-react-helmet="true" name="twitter:card" content="summary_large_image"><meta data-react-helmet="true" property="og:url" content="https://your-docusaurus-site.example.com/foo/blog/date-matter"><meta data-react-helmet="true" name="docusaurus_locale" content="en"><meta data-react-helmet="true" name="docusaurus_tag" content="default"><meta data-react-helmet="true" property="og:title" content="date-matter | My Site"><meta data-react-helmet="true" name="description" content="date inside front matter"><meta data-react-helmet="true" property="og:description" content="date inside front matter"><meta data-react-helmet="true" property="og:type" content="article"><meta data-react-helmet="true" property="article:published_time" content="2019-01-01T00:00:00.000Z"><meta data-react-helmet="true" property="article:tag" content="date"><link data-react-helmet="true" rel="icon" href="/foo/img/favicon.ico"><link data-react-helmet="true" rel="canonical" href="https://your-docusaurus-site.example.com/foo/blog/date-matter"><link data-react-helmet="true" rel="alternate" href="https://your-docusaurus-site.example.com/foo/blog/date-matter" hreflang="en"><link data-react-helmet="true" rel="alternate" href="https://your-docusaurus-site.example.com/foo/blog/date-matter" hreflang="x-default"><link rel="stylesheet" href="/foo/assets/css/styles.3c7ca81b.css">
 <link rel="preload" href="/foo/assets/js/runtime~main.c1b53ef5.js" as="script">
 <link rel="preload" href="/foo/assets/js/main.5cb79c9b.js" as="script">
 </head>
diff --git a/packages/docusaurus-plugin-content-blog/src/__tests__/__fixtures__/website/build-snap/blog/heading-as-title/index.html b/packages/docusaurus-plugin-content-blog/src/__tests__/__fixtures__/website/build-snap/blog/heading-as-title/index.html
index ca57228852..1e01bcf0e3 100644
--- a/packages/docusaurus-plugin-content-blog/src/__tests__/__fixtures__/website/build-snap/blog/heading-as-title/index.html
+++ b/packages/docusaurus-plugin-content-blog/src/__tests__/__fixtures__/website/build-snap/blog/heading-as-title/index.html
@@ -5,7 +5,7 @@
 <meta name="viewport" content="width=device-width,initial-scale=1">
 <meta name="generator" content="Docusaurus v0.0.0-4458">
 <link rel="alternate" type="application/rss+xml" href="/foo/blog/rss.xml" title="My Site RSS Feed">
-<link rel="alternate" type="application/atom+xml" href="/foo/blog/atom.xml" title="My Site Atom Feed"><title data-react-helmet="true">some heading | My Site</title><meta data-react-helmet="true" name="twitter:card" content="summary_large_image"><meta data-react-helmet="true" property="og:url" content="https://your-docusaurus-test-site.com/foo/blog/heading-as-title"><meta data-react-helmet="true" name="docusaurus_locale" content="en"><meta data-react-helmet="true" name="docusaurus_tag" content="default"><meta data-react-helmet="true" property="og:title" content="some heading | My Site"><meta data-react-helmet="true" property="og:type" content="article"><meta data-react-helmet="true" property="article:published_time" content="2019-01-02T00:00:00.000Z"><link data-react-helmet="true" rel="icon" href="/foo/img/favicon.ico"><link data-react-helmet="true" rel="canonical" href="https://your-docusaurus-test-site.com/foo/blog/heading-as-title"><link data-react-helmet="true" rel="alternate" href="https://your-docusaurus-test-site.com/foo/blog/heading-as-title" hreflang="en"><link data-react-helmet="true" rel="alternate" href="https://your-docusaurus-test-site.com/foo/blog/heading-as-title" hreflang="x-default"><link rel="stylesheet" href="/foo/assets/css/styles.3c7ca81b.css">
+<link rel="alternate" type="application/atom+xml" href="/foo/blog/atom.xml" title="My Site Atom Feed"><title data-react-helmet="true">some heading | My Site</title><meta data-react-helmet="true" name="twitter:card" content="summary_large_image"><meta data-react-helmet="true" property="og:url" content="https://your-docusaurus-site.example.com/foo/blog/heading-as-title"><meta data-react-helmet="true" name="docusaurus_locale" content="en"><meta data-react-helmet="true" name="docusaurus_tag" content="default"><meta data-react-helmet="true" property="og:title" content="some heading | My Site"><meta data-react-helmet="true" property="og:type" content="article"><meta data-react-helmet="true" property="article:published_time" content="2019-01-02T00:00:00.000Z"><link data-react-helmet="true" rel="icon" href="/foo/img/favicon.ico"><link data-react-helmet="true" rel="canonical" href="https://your-docusaurus-site.example.com/foo/blog/heading-as-title"><link data-react-helmet="true" rel="alternate" href="https://your-docusaurus-site.example.com/foo/blog/heading-as-title" hreflang="en"><link data-react-helmet="true" rel="alternate" href="https://your-docusaurus-site.example.com/foo/blog/heading-as-title" hreflang="x-default"><link rel="stylesheet" href="/foo/assets/css/styles.3c7ca81b.css">
 <link rel="preload" href="/foo/assets/js/runtime~main.c1b53ef5.js" as="script">
 <link rel="preload" href="/foo/assets/js/main.5cb79c9b.js" as="script">
 </head>
diff --git a/packages/docusaurus-plugin-content-blog/src/__tests__/__fixtures__/website/build-snap/blog/hey/my super path/héllô/index.html b/packages/docusaurus-plugin-content-blog/src/__tests__/__fixtures__/website/build-snap/blog/hey/my super path/héllô/index.html
index 9218b56b4e..491fe33f1e 100644
--- a/packages/docusaurus-plugin-content-blog/src/__tests__/__fixtures__/website/build-snap/blog/hey/my super path/héllô/index.html	
+++ b/packages/docusaurus-plugin-content-blog/src/__tests__/__fixtures__/website/build-snap/blog/hey/my super path/héllô/index.html	
@@ -5,7 +5,7 @@
 <meta name="viewport" content="width=device-width,initial-scale=1">
 <meta name="generator" content="Docusaurus v0.0.0-4458">
 <link rel="alternate" type="application/rss+xml" href="/foo/blog/rss.xml" title="My Site RSS Feed">
-<link rel="alternate" type="application/atom+xml" href="/foo/blog/atom.xml" title="My Site Atom Feed"><title data-react-helmet="true">Complex Slug | My Site</title><meta data-react-helmet="true" name="twitter:card" content="summary_large_image"><meta data-react-helmet="true" property="og:url" content="https://your-docusaurus-test-site.com/foo/blog/hey/my super path/héllô"><meta data-react-helmet="true" name="docusaurus_locale" content="en"><meta data-react-helmet="true" name="docusaurus_tag" content="default"><meta data-react-helmet="true" property="og:title" content="Complex Slug | My Site"><meta data-react-helmet="true" name="description" content="complex url slug"><meta data-react-helmet="true" property="og:description" content="complex url slug"><meta data-react-helmet="true" property="og:type" content="article"><meta data-react-helmet="true" property="article:published_time" content="2020-08-16T00:00:00.000Z"><meta data-react-helmet="true" property="article:tag" content="date,complex"><link data-react-helmet="true" rel="icon" href="/foo/img/favicon.ico"><link data-react-helmet="true" rel="canonical" href="https://your-docusaurus-test-site.com/foo/blog/hey/my super path/héllô"><link data-react-helmet="true" rel="alternate" href="https://your-docusaurus-test-site.com/foo/blog/hey/my super path/héllô" hreflang="en"><link data-react-helmet="true" rel="alternate" href="https://your-docusaurus-test-site.com/foo/blog/hey/my super path/héllô" hreflang="x-default"><link rel="stylesheet" href="/foo/assets/css/styles.3c7ca81b.css">
+<link rel="alternate" type="application/atom+xml" href="/foo/blog/atom.xml" title="My Site Atom Feed"><title data-react-helmet="true">Complex Slug | My Site</title><meta data-react-helmet="true" name="twitter:card" content="summary_large_image"><meta data-react-helmet="true" property="og:url" content="https://your-docusaurus-site.example.com/foo/blog/hey/my super path/héllô"><meta data-react-helmet="true" name="docusaurus_locale" content="en"><meta data-react-helmet="true" name="docusaurus_tag" content="default"><meta data-react-helmet="true" property="og:title" content="Complex Slug | My Site"><meta data-react-helmet="true" name="description" content="complex url slug"><meta data-react-helmet="true" property="og:description" content="complex url slug"><meta data-react-helmet="true" property="og:type" content="article"><meta data-react-helmet="true" property="article:published_time" content="2020-08-16T00:00:00.000Z"><meta data-react-helmet="true" property="article:tag" content="date,complex"><link data-react-helmet="true" rel="icon" href="/foo/img/favicon.ico"><link data-react-helmet="true" rel="canonical" href="https://your-docusaurus-site.example.com/foo/blog/hey/my super path/héllô"><link data-react-helmet="true" rel="alternate" href="https://your-docusaurus-site.example.com/foo/blog/hey/my super path/héllô" hreflang="en"><link data-react-helmet="true" rel="alternate" href="https://your-docusaurus-site.example.com/foo/blog/hey/my super path/héllô" hreflang="x-default"><link rel="stylesheet" href="/foo/assets/css/styles.3c7ca81b.css">
 <link rel="preload" href="/foo/assets/js/runtime~main.c1b53ef5.js" as="script">
 <link rel="preload" href="/foo/assets/js/main.5cb79c9b.js" as="script">
 </head>
diff --git a/packages/docusaurus-plugin-content-blog/src/__tests__/__fixtures__/website/build-snap/blog/index.html b/packages/docusaurus-plugin-content-blog/src/__tests__/__fixtures__/website/build-snap/blog/index.html
index b0ba576b63..d0a8e5f812 100644
--- a/packages/docusaurus-plugin-content-blog/src/__tests__/__fixtures__/website/build-snap/blog/index.html
+++ b/packages/docusaurus-plugin-content-blog/src/__tests__/__fixtures__/website/build-snap/blog/index.html
@@ -5,7 +5,7 @@
 <meta name="viewport" content="width=device-width,initial-scale=1">
 <meta name="generator" content="Docusaurus v0.0.0-4458">
 <link rel="alternate" type="application/rss+xml" href="/foo/blog/rss.xml" title="My Site RSS Feed">
-<link rel="alternate" type="application/atom+xml" href="/foo/blog/atom.xml" title="My Site Atom Feed"><title data-react-helmet="true">Blog | My Site</title><meta data-react-helmet="true" property="og:title" content="Blog | My Site"><meta data-react-helmet="true" name="twitter:card" content="summary_large_image"><meta data-react-helmet="true" name="description" content="Blog"><meta data-react-helmet="true" property="og:description" content="Blog"><meta data-react-helmet="true" property="og:url" content="https://your-docusaurus-test-site.com/foo/blog"><meta data-react-helmet="true" name="docusaurus_locale" content="en"><meta data-react-helmet="true" name="docusaurus_tag" content="blog_posts_list"><link data-react-helmet="true" rel="icon" href="/foo/img/favicon.ico"><link data-react-helmet="true" rel="canonical" href="https://your-docusaurus-test-site.com/foo/blog"><link data-react-helmet="true" rel="alternate" href="https://your-docusaurus-test-site.com/foo/blog" hreflang="en"><link data-react-helmet="true" rel="alternate" href="https://your-docusaurus-test-site.com/foo/blog" hreflang="x-default"><link rel="stylesheet" href="/foo/assets/css/styles.3c7ca81b.css">
+<link rel="alternate" type="application/atom+xml" href="/foo/blog/atom.xml" title="My Site Atom Feed"><title data-react-helmet="true">Blog | My Site</title><meta data-react-helmet="true" property="og:title" content="Blog | My Site"><meta data-react-helmet="true" name="twitter:card" content="summary_large_image"><meta data-react-helmet="true" name="description" content="Blog"><meta data-react-helmet="true" property="og:description" content="Blog"><meta data-react-helmet="true" property="og:url" content="https://your-docusaurus-site.example.com/foo/blog"><meta data-react-helmet="true" name="docusaurus_locale" content="en"><meta data-react-helmet="true" name="docusaurus_tag" content="blog_posts_list"><link data-react-helmet="true" rel="icon" href="/foo/img/favicon.ico"><link data-react-helmet="true" rel="canonical" href="https://your-docusaurus-site.example.com/foo/blog"><link data-react-helmet="true" rel="alternate" href="https://your-docusaurus-site.example.com/foo/blog" hreflang="en"><link data-react-helmet="true" rel="alternate" href="https://your-docusaurus-site.example.com/foo/blog" hreflang="x-default"><link rel="stylesheet" href="/foo/assets/css/styles.3c7ca81b.css">
 <link rel="preload" href="/foo/assets/js/runtime~main.c1b53ef5.js" as="script">
 <link rel="preload" href="/foo/assets/js/main.5cb79c9b.js" as="script">
 </head>
@@ -16,4 +16,4 @@
 <script src="/foo/assets/js/runtime~main.c1b53ef5.js"></script>
 <script src="/foo/assets/js/main.5cb79c9b.js"></script>
 </body>
-</html>
\ No newline at end of file
+</html>
diff --git a/packages/docusaurus-plugin-content-blog/src/__tests__/__fixtures__/website/build-snap/blog/mdx-blog-post/index.html b/packages/docusaurus-plugin-content-blog/src/__tests__/__fixtures__/website/build-snap/blog/mdx-blog-post/index.html
index 6aac38a41d..32f3981aee 100644
--- a/packages/docusaurus-plugin-content-blog/src/__tests__/__fixtures__/website/build-snap/blog/mdx-blog-post/index.html
+++ b/packages/docusaurus-plugin-content-blog/src/__tests__/__fixtures__/website/build-snap/blog/mdx-blog-post/index.html
@@ -5,7 +5,7 @@
 <meta name="viewport" content="width=device-width,initial-scale=1">
 <meta name="generator" content="Docusaurus v0.0.0-4458">
 <link rel="alternate" type="application/rss+xml" href="/foo/blog/rss.xml" title="My Site RSS Feed">
-<link rel="alternate" type="application/atom+xml" href="/foo/blog/atom.xml" title="My Site Atom Feed"><title data-react-helmet="true">Full Blog Sample | My Site</title><meta data-react-helmet="true" name="twitter:card" content="summary_large_image"><meta data-react-helmet="true" property="og:url" content="https://your-docusaurus-test-site.com/foo/blog/mdx-blog-post"><meta data-react-helmet="true" name="docusaurus_locale" content="en"><meta data-react-helmet="true" name="docusaurus_tag" content="default"><meta data-react-helmet="true" property="og:title" content="Full Blog Sample | My Site"><meta data-react-helmet="true" name="description" content="HTML Heading 1"><meta data-react-helmet="true" property="og:description" content="HTML Heading 1"><meta data-react-helmet="true" property="og:type" content="article"><meta data-react-helmet="true" property="article:published_time" content="2021-03-05T00:00:00.000Z"><link data-react-helmet="true" rel="icon" href="/foo/img/favicon.ico"><link data-react-helmet="true" rel="canonical" href="https://your-docusaurus-test-site.com/foo/blog/mdx-blog-post"><link data-react-helmet="true" rel="alternate" href="https://your-docusaurus-test-site.com/foo/blog/mdx-blog-post" hreflang="en"><link data-react-helmet="true" rel="alternate" href="https://your-docusaurus-test-site.com/foo/blog/mdx-blog-post" hreflang="x-default"><link rel="stylesheet" href="/foo/assets/css/styles.3c7ca81b.css">
+<link rel="alternate" type="application/atom+xml" href="/foo/blog/atom.xml" title="My Site Atom Feed"><title data-react-helmet="true">Full Blog Sample | My Site</title><meta data-react-helmet="true" name="twitter:card" content="summary_large_image"><meta data-react-helmet="true" property="og:url" content="https://your-docusaurus-site.example.com/foo/blog/mdx-blog-post"><meta data-react-helmet="true" name="docusaurus_locale" content="en"><meta data-react-helmet="true" name="docusaurus_tag" content="default"><meta data-react-helmet="true" property="og:title" content="Full Blog Sample | My Site"><meta data-react-helmet="true" name="description" content="HTML Heading 1"><meta data-react-helmet="true" property="og:description" content="HTML Heading 1"><meta data-react-helmet="true" property="og:type" content="article"><meta data-react-helmet="true" property="article:published_time" content="2021-03-05T00:00:00.000Z"><link data-react-helmet="true" rel="icon" href="/foo/img/favicon.ico"><link data-react-helmet="true" rel="canonical" href="https://your-docusaurus-site.example.com/foo/blog/mdx-blog-post"><link data-react-helmet="true" rel="alternate" href="https://your-docusaurus-site.example.com/foo/blog/mdx-blog-post" hreflang="en"><link data-react-helmet="true" rel="alternate" href="https://your-docusaurus-site.example.com/foo/blog/mdx-blog-post" hreflang="x-default"><link rel="stylesheet" href="/foo/assets/css/styles.3c7ca81b.css">
 <link rel="preload" href="/foo/assets/js/runtime~main.c1b53ef5.js" as="script">
 <link rel="preload" href="/foo/assets/js/main.5cb79c9b.js" as="script">
 </head>
diff --git a/packages/docusaurus-plugin-content-blog/src/__tests__/__fixtures__/website/build-snap/blog/mdx-require-blog-post/index.html b/packages/docusaurus-plugin-content-blog/src/__tests__/__fixtures__/website/build-snap/blog/mdx-require-blog-post/index.html
index ad5e9da1c1..e5a90ef538 100644
--- a/packages/docusaurus-plugin-content-blog/src/__tests__/__fixtures__/website/build-snap/blog/mdx-require-blog-post/index.html
+++ b/packages/docusaurus-plugin-content-blog/src/__tests__/__fixtures__/website/build-snap/blog/mdx-require-blog-post/index.html
@@ -5,7 +5,7 @@
 <meta name="viewport" content="width=device-width,initial-scale=1">
 <meta name="generator" content="Docusaurus v0.0.0-4458">
 <link rel="alternate" type="application/rss+xml" href="/foo/blog/rss.xml" title="My Site RSS Feed">
-<link rel="alternate" type="application/atom+xml" href="/foo/blog/atom.xml" title="My Site Atom Feed"><title data-react-helmet="true">MDX Blog Sample with require calls | My Site</title><meta data-react-helmet="true" name="twitter:card" content="summary_large_image"><meta data-react-helmet="true" property="og:url" content="https://your-docusaurus-test-site.com/foo/blog/mdx-require-blog-post"><meta data-react-helmet="true" name="docusaurus_locale" content="en"><meta data-react-helmet="true" name="docusaurus_tag" content="default"><meta data-react-helmet="true" property="og:title" content="MDX Blog Sample with require calls | My Site"><meta data-react-helmet="true" name="description" content="Test MDX with require calls"><meta data-react-helmet="true" property="og:description" content="Test MDX with require calls"><meta data-react-helmet="true" property="og:type" content="article"><meta data-react-helmet="true" property="article:published_time" content="2021-03-06T00:00:00.000Z"><link data-react-helmet="true" rel="icon" href="/foo/img/favicon.ico"><link data-react-helmet="true" rel="canonical" href="https://your-docusaurus-test-site.com/foo/blog/mdx-require-blog-post"><link data-react-helmet="true" rel="alternate" href="https://your-docusaurus-test-site.com/foo/blog/mdx-require-blog-post" hreflang="en"><link data-react-helmet="true" rel="alternate" href="https://your-docusaurus-test-site.com/foo/blog/mdx-require-blog-post" hreflang="x-default"><link rel="stylesheet" href="/foo/assets/css/styles.3c7ca81b.css">
+<link rel="alternate" type="application/atom+xml" href="/foo/blog/atom.xml" title="My Site Atom Feed"><title data-react-helmet="true">MDX Blog Sample with require calls | My Site</title><meta data-react-helmet="true" name="twitter:card" content="summary_large_image"><meta data-react-helmet="true" property="og:url" content="https://your-docusaurus-site.example.com/foo/blog/mdx-require-blog-post"><meta data-react-helmet="true" name="docusaurus_locale" content="en"><meta data-react-helmet="true" name="docusaurus_tag" content="default"><meta data-react-helmet="true" property="og:title" content="MDX Blog Sample with require calls | My Site"><meta data-react-helmet="true" name="description" content="Test MDX with require calls"><meta data-react-helmet="true" property="og:description" content="Test MDX with require calls"><meta data-react-helmet="true" property="og:type" content="article"><meta data-react-helmet="true" property="article:published_time" content="2021-03-06T00:00:00.000Z"><link data-react-helmet="true" rel="icon" href="/foo/img/favicon.ico"><link data-react-helmet="true" rel="canonical" href="https://your-docusaurus-site.example.com/foo/blog/mdx-require-blog-post"><link data-react-helmet="true" rel="alternate" href="https://your-docusaurus-site.example.com/foo/blog/mdx-require-blog-post" hreflang="en"><link data-react-helmet="true" rel="alternate" href="https://your-docusaurus-site.example.com/foo/blog/mdx-require-blog-post" hreflang="x-default"><link rel="stylesheet" href="/foo/assets/css/styles.3c7ca81b.css">
 <link rel="preload" href="/foo/assets/js/runtime~main.c1b53ef5.js" as="script">
 <link rel="preload" href="/foo/assets/js/main.5cb79c9b.js" as="script">
 </head>
diff --git a/packages/docusaurus-plugin-content-blog/src/__tests__/__fixtures__/website/build-snap/blog/simple/slug/index.html b/packages/docusaurus-plugin-content-blog/src/__tests__/__fixtures__/website/build-snap/blog/simple/slug/index.html
index 7f0519e71c..334df76d7f 100644
--- a/packages/docusaurus-plugin-content-blog/src/__tests__/__fixtures__/website/build-snap/blog/simple/slug/index.html
+++ b/packages/docusaurus-plugin-content-blog/src/__tests__/__fixtures__/website/build-snap/blog/simple/slug/index.html
@@ -5,7 +5,7 @@
 <meta name="viewport" content="width=device-width,initial-scale=1">
 <meta name="generator" content="Docusaurus v0.0.0-4458">
 <link rel="alternate" type="application/rss+xml" href="/foo/blog/rss.xml" title="My Site RSS Feed">
-<link rel="alternate" type="application/atom+xml" href="/foo/blog/atom.xml" title="My Site Atom Feed"><title data-react-helmet="true">Simple Slug | My Site</title><meta data-react-helmet="true" name="twitter:card" content="summary_large_image"><meta data-react-helmet="true" property="og:url" content="https://your-docusaurus-test-site.com/foo/blog/simple/slug"><meta data-react-helmet="true" name="docusaurus_locale" content="en"><meta data-react-helmet="true" name="docusaurus_tag" content="default"><meta data-react-helmet="true" property="og:title" content="Simple Slug | My Site"><meta data-react-helmet="true" name="description" content="simple url slug"><meta data-react-helmet="true" property="og:description" content="simple url slug"><meta data-react-helmet="true" property="og:type" content="article"><meta data-react-helmet="true" property="article:published_time" content="2020-08-15T00:00:00.000Z"><meta data-react-helmet="true" property="article:author" content="https://sebastienlorber.com"><link data-react-helmet="true" rel="icon" href="/foo/img/favicon.ico"><link data-react-helmet="true" rel="canonical" href="https://your-docusaurus-test-site.com/foo/blog/simple/slug"><link data-react-helmet="true" rel="alternate" href="https://your-docusaurus-test-site.com/foo/blog/simple/slug" hreflang="en"><link data-react-helmet="true" rel="alternate" href="https://your-docusaurus-test-site.com/foo/blog/simple/slug" hreflang="x-default"><link rel="stylesheet" href="/foo/assets/css/styles.3c7ca81b.css">
+<link rel="alternate" type="application/atom+xml" href="/foo/blog/atom.xml" title="My Site Atom Feed"><title data-react-helmet="true">Simple Slug | My Site</title><meta data-react-helmet="true" name="twitter:card" content="summary_large_image"><meta data-react-helmet="true" property="og:url" content="https://your-docusaurus-site.example.com/foo/blog/simple/slug"><meta data-react-helmet="true" name="docusaurus_locale" content="en"><meta data-react-helmet="true" name="docusaurus_tag" content="default"><meta data-react-helmet="true" property="og:title" content="Simple Slug | My Site"><meta data-react-helmet="true" name="description" content="simple url slug"><meta data-react-helmet="true" property="og:description" content="simple url slug"><meta data-react-helmet="true" property="og:type" content="article"><meta data-react-helmet="true" property="article:published_time" content="2020-08-15T00:00:00.000Z"><meta data-react-helmet="true" property="article:author" content="https://sebastienlorber.com"><link data-react-helmet="true" rel="icon" href="/foo/img/favicon.ico"><link data-react-helmet="true" rel="canonical" href="https://your-docusaurus-site.example.com/foo/blog/simple/slug"><link data-react-helmet="true" rel="alternate" href="https://your-docusaurus-site.example.com/foo/blog/simple/slug" hreflang="en"><link data-react-helmet="true" rel="alternate" href="https://your-docusaurus-site.example.com/foo/blog/simple/slug" hreflang="x-default"><link rel="stylesheet" href="/foo/assets/css/styles.3c7ca81b.css">
 <link rel="preload" href="/foo/assets/js/runtime~main.c1b53ef5.js" as="script">
 <link rel="preload" href="/foo/assets/js/main.5cb79c9b.js" as="script">
 </head>
diff --git a/packages/docusaurus-plugin-content-blog/src/__tests__/__fixtures__/website/build-snap/blog/tags/birthday/index.html b/packages/docusaurus-plugin-content-blog/src/__tests__/__fixtures__/website/build-snap/blog/tags/birthday/index.html
index f9820c0f21..2cf63d366d 100644
--- a/packages/docusaurus-plugin-content-blog/src/__tests__/__fixtures__/website/build-snap/blog/tags/birthday/index.html
+++ b/packages/docusaurus-plugin-content-blog/src/__tests__/__fixtures__/website/build-snap/blog/tags/birthday/index.html
@@ -5,7 +5,7 @@
 <meta name="viewport" content="width=device-width,initial-scale=1">
 <meta name="generator" content="Docusaurus v0.0.0-4458">
 <link rel="alternate" type="application/rss+xml" href="/foo/blog/rss.xml" title="My Site RSS Feed">
-<link rel="alternate" type="application/atom+xml" href="/foo/blog/atom.xml" title="My Site Atom Feed"><title data-react-helmet="true">One post tagged with &quot;birthday&quot; | My Site</title><meta data-react-helmet="true" property="og:title" content="One post tagged with &quot;birthday&quot; | My Site"><meta data-react-helmet="true" name="twitter:card" content="summary_large_image"><meta data-react-helmet="true" property="og:url" content="https://your-docusaurus-test-site.com/foo/blog/tags/birthday"><meta data-react-helmet="true" name="docusaurus_locale" content="en"><meta data-react-helmet="true" name="docusaurus_tag" content="blog_tags_posts"><link data-react-helmet="true" rel="icon" href="/foo/img/favicon.ico"><link data-react-helmet="true" rel="canonical" href="https://your-docusaurus-test-site.com/foo/blog/tags/birthday"><link data-react-helmet="true" rel="alternate" href="https://your-docusaurus-test-site.com/foo/blog/tags/birthday" hreflang="en"><link data-react-helmet="true" rel="alternate" href="https://your-docusaurus-test-site.com/foo/blog/tags/birthday" hreflang="x-default"><link rel="stylesheet" href="/foo/assets/css/styles.3c7ca81b.css">
+<link rel="alternate" type="application/atom+xml" href="/foo/blog/atom.xml" title="My Site Atom Feed"><title data-react-helmet="true">One post tagged with &quot;birthday&quot; | My Site</title><meta data-react-helmet="true" property="og:title" content="One post tagged with &quot;birthday&quot; | My Site"><meta data-react-helmet="true" name="twitter:card" content="summary_large_image"><meta data-react-helmet="true" property="og:url" content="https://your-docusaurus-site.example.com/foo/blog/tags/birthday"><meta data-react-helmet="true" name="docusaurus_locale" content="en"><meta data-react-helmet="true" name="docusaurus_tag" content="blog_tags_posts"><link data-react-helmet="true" rel="icon" href="/foo/img/favicon.ico"><link data-react-helmet="true" rel="canonical" href="https://your-docusaurus-site.example.com/foo/blog/tags/birthday"><link data-react-helmet="true" rel="alternate" href="https://your-docusaurus-site.example.com/foo/blog/tags/birthday" hreflang="en"><link data-react-helmet="true" rel="alternate" href="https://your-docusaurus-site.example.com/foo/blog/tags/birthday" hreflang="x-default"><link rel="stylesheet" href="/foo/assets/css/styles.3c7ca81b.css">
 <link rel="preload" href="/foo/assets/js/runtime~main.c1b53ef5.js" as="script">
 <link rel="preload" href="/foo/assets/js/main.5cb79c9b.js" as="script">
 </head>
@@ -15,4 +15,4 @@
 <script src="/foo/assets/js/runtime~main.c1b53ef5.js"></script>
 <script src="/foo/assets/js/main.5cb79c9b.js"></script>
 </body>
-</html>
\ No newline at end of file
+</html>
diff --git a/packages/docusaurus-plugin-content-blog/src/__tests__/__fixtures__/website/build-snap/blog/tags/complex/index.html b/packages/docusaurus-plugin-content-blog/src/__tests__/__fixtures__/website/build-snap/blog/tags/complex/index.html
index c8b5017f1a..63f0a0f193 100644
--- a/packages/docusaurus-plugin-content-blog/src/__tests__/__fixtures__/website/build-snap/blog/tags/complex/index.html
+++ b/packages/docusaurus-plugin-content-blog/src/__tests__/__fixtures__/website/build-snap/blog/tags/complex/index.html
@@ -5,7 +5,7 @@
 <meta name="viewport" content="width=device-width,initial-scale=1">
 <meta name="generator" content="Docusaurus v0.0.0-4458">
 <link rel="alternate" type="application/rss+xml" href="/foo/blog/rss.xml" title="My Site RSS Feed">
-<link rel="alternate" type="application/atom+xml" href="/foo/blog/atom.xml" title="My Site Atom Feed"><title data-react-helmet="true">One post tagged with &quot;complex&quot; | My Site</title><meta data-react-helmet="true" property="og:title" content="One post tagged with &quot;complex&quot; | My Site"><meta data-react-helmet="true" name="twitter:card" content="summary_large_image"><meta data-react-helmet="true" property="og:url" content="https://your-docusaurus-test-site.com/foo/blog/tags/complex"><meta data-react-helmet="true" name="docusaurus_locale" content="en"><meta data-react-helmet="true" name="docusaurus_tag" content="blog_tags_posts"><link data-react-helmet="true" rel="icon" href="/foo/img/favicon.ico"><link data-react-helmet="true" rel="canonical" href="https://your-docusaurus-test-site.com/foo/blog/tags/complex"><link data-react-helmet="true" rel="alternate" href="https://your-docusaurus-test-site.com/foo/blog/tags/complex" hreflang="en"><link data-react-helmet="true" rel="alternate" href="https://your-docusaurus-test-site.com/foo/blog/tags/complex" hreflang="x-default"><link rel="stylesheet" href="/foo/assets/css/styles.3c7ca81b.css">
+<link rel="alternate" type="application/atom+xml" href="/foo/blog/atom.xml" title="My Site Atom Feed"><title data-react-helmet="true">One post tagged with &quot;complex&quot; | My Site</title><meta data-react-helmet="true" property="og:title" content="One post tagged with &quot;complex&quot; | My Site"><meta data-react-helmet="true" name="twitter:card" content="summary_large_image"><meta data-react-helmet="true" property="og:url" content="https://your-docusaurus-site.example.com/foo/blog/tags/complex"><meta data-react-helmet="true" name="docusaurus_locale" content="en"><meta data-react-helmet="true" name="docusaurus_tag" content="blog_tags_posts"><link data-react-helmet="true" rel="icon" href="/foo/img/favicon.ico"><link data-react-helmet="true" rel="canonical" href="https://your-docusaurus-site.example.com/foo/blog/tags/complex"><link data-react-helmet="true" rel="alternate" href="https://your-docusaurus-site.example.com/foo/blog/tags/complex" hreflang="en"><link data-react-helmet="true" rel="alternate" href="https://your-docusaurus-site.example.com/foo/blog/tags/complex" hreflang="x-default"><link rel="stylesheet" href="/foo/assets/css/styles.3c7ca81b.css">
 <link rel="preload" href="/foo/assets/js/runtime~main.c1b53ef5.js" as="script">
 <link rel="preload" href="/foo/assets/js/main.5cb79c9b.js" as="script">
 </head>
@@ -15,4 +15,4 @@
 <script src="/foo/assets/js/runtime~main.c1b53ef5.js"></script>
 <script src="/foo/assets/js/main.5cb79c9b.js"></script>
 </body>
-</html>
\ No newline at end of file
+</html>
diff --git a/packages/docusaurus-plugin-content-blog/src/__tests__/__fixtures__/website/build-snap/blog/tags/date/index.html b/packages/docusaurus-plugin-content-blog/src/__tests__/__fixtures__/website/build-snap/blog/tags/date/index.html
index 1878e30260..fc6aab7603 100644
--- a/packages/docusaurus-plugin-content-blog/src/__tests__/__fixtures__/website/build-snap/blog/tags/date/index.html
+++ b/packages/docusaurus-plugin-content-blog/src/__tests__/__fixtures__/website/build-snap/blog/tags/date/index.html
@@ -5,7 +5,7 @@
 <meta name="viewport" content="width=device-width,initial-scale=1">
 <meta name="generator" content="Docusaurus v0.0.0-4458">
 <link rel="alternate" type="application/rss+xml" href="/foo/blog/rss.xml" title="My Site RSS Feed">
-<link rel="alternate" type="application/atom+xml" href="/foo/blog/atom.xml" title="My Site Atom Feed"><title data-react-helmet="true">2 posts tagged with &quot;date&quot; | My Site</title><meta data-react-helmet="true" property="og:title" content="2 posts tagged with &quot;date&quot; | My Site"><meta data-react-helmet="true" name="twitter:card" content="summary_large_image"><meta data-react-helmet="true" property="og:url" content="https://your-docusaurus-test-site.com/foo/blog/tags/date"><meta data-react-helmet="true" name="docusaurus_locale" content="en"><meta data-react-helmet="true" name="docusaurus_tag" content="blog_tags_posts"><link data-react-helmet="true" rel="icon" href="/foo/img/favicon.ico"><link data-react-helmet="true" rel="canonical" href="https://your-docusaurus-test-site.com/foo/blog/tags/date"><link data-react-helmet="true" rel="alternate" href="https://your-docusaurus-test-site.com/foo/blog/tags/date" hreflang="en"><link data-react-helmet="true" rel="alternate" href="https://your-docusaurus-test-site.com/foo/blog/tags/date" hreflang="x-default"><link rel="stylesheet" href="/foo/assets/css/styles.3c7ca81b.css">
+<link rel="alternate" type="application/atom+xml" href="/foo/blog/atom.xml" title="My Site Atom Feed"><title data-react-helmet="true">2 posts tagged with &quot;date&quot; | My Site</title><meta data-react-helmet="true" property="og:title" content="2 posts tagged with &quot;date&quot; | My Site"><meta data-react-helmet="true" name="twitter:card" content="summary_large_image"><meta data-react-helmet="true" property="og:url" content="https://your-docusaurus-site.example.com/foo/blog/tags/date"><meta data-react-helmet="true" name="docusaurus_locale" content="en"><meta data-react-helmet="true" name="docusaurus_tag" content="blog_tags_posts"><link data-react-helmet="true" rel="icon" href="/foo/img/favicon.ico"><link data-react-helmet="true" rel="canonical" href="https://your-docusaurus-site.example.com/foo/blog/tags/date"><link data-react-helmet="true" rel="alternate" href="https://your-docusaurus-site.example.com/foo/blog/tags/date" hreflang="en"><link data-react-helmet="true" rel="alternate" href="https://your-docusaurus-site.example.com/foo/blog/tags/date" hreflang="x-default"><link rel="stylesheet" href="/foo/assets/css/styles.3c7ca81b.css">
 <link rel="preload" href="/foo/assets/js/runtime~main.c1b53ef5.js" as="script">
 <link rel="preload" href="/foo/assets/js/main.5cb79c9b.js" as="script">
 </head>
@@ -15,4 +15,4 @@
 <script src="/foo/assets/js/runtime~main.c1b53ef5.js"></script>
 <script src="/foo/assets/js/main.5cb79c9b.js"></script>
 </body>
-</html>
\ No newline at end of file
+</html>
diff --git a/packages/docusaurus-plugin-content-blog/src/__tests__/__fixtures__/website/build-snap/blog/tags/index.html b/packages/docusaurus-plugin-content-blog/src/__tests__/__fixtures__/website/build-snap/blog/tags/index.html
index 292400b08f..242172fca8 100644
--- a/packages/docusaurus-plugin-content-blog/src/__tests__/__fixtures__/website/build-snap/blog/tags/index.html
+++ b/packages/docusaurus-plugin-content-blog/src/__tests__/__fixtures__/website/build-snap/blog/tags/index.html
@@ -5,7 +5,7 @@
 <meta name="viewport" content="width=device-width,initial-scale=1">
 <meta name="generator" content="Docusaurus v0.0.0-4458">
 <link rel="alternate" type="application/rss+xml" href="/foo/blog/rss.xml" title="My Site RSS Feed">
-<link rel="alternate" type="application/atom+xml" href="/foo/blog/atom.xml" title="My Site Atom Feed"><title data-react-helmet="true">Tags | My Site</title><meta data-react-helmet="true" property="og:title" content="Tags | My Site"><meta data-react-helmet="true" name="twitter:card" content="summary_large_image"><meta data-react-helmet="true" property="og:url" content="https://your-docusaurus-test-site.com/foo/blog/tags"><meta data-react-helmet="true" name="docusaurus_locale" content="en"><meta data-react-helmet="true" name="docusaurus_tag" content="blog_tags_list"><link data-react-helmet="true" rel="icon" href="/foo/img/favicon.ico"><link data-react-helmet="true" rel="canonical" href="https://your-docusaurus-test-site.com/foo/blog/tags"><link data-react-helmet="true" rel="alternate" href="https://your-docusaurus-test-site.com/foo/blog/tags" hreflang="en"><link data-react-helmet="true" rel="alternate" href="https://your-docusaurus-test-site.com/foo/blog/tags" hreflang="x-default"><link rel="stylesheet" href="/foo/assets/css/styles.3c7ca81b.css">
+<link rel="alternate" type="application/atom+xml" href="/foo/blog/atom.xml" title="My Site Atom Feed"><title data-react-helmet="true">Tags | My Site</title><meta data-react-helmet="true" property="og:title" content="Tags | My Site"><meta data-react-helmet="true" name="twitter:card" content="summary_large_image"><meta data-react-helmet="true" property="og:url" content="https://your-docusaurus-site.example.com/foo/blog/tags"><meta data-react-helmet="true" name="docusaurus_locale" content="en"><meta data-react-helmet="true" name="docusaurus_tag" content="blog_tags_list"><link data-react-helmet="true" rel="icon" href="/foo/img/favicon.ico"><link data-react-helmet="true" rel="canonical" href="https://your-docusaurus-site.example.com/foo/blog/tags"><link data-react-helmet="true" rel="alternate" href="https://your-docusaurus-site.example.com/foo/blog/tags" hreflang="en"><link data-react-helmet="true" rel="alternate" href="https://your-docusaurus-site.example.com/foo/blog/tags" hreflang="x-default"><link rel="stylesheet" href="/foo/assets/css/styles.3c7ca81b.css">
 <link rel="preload" href="/foo/assets/js/runtime~main.c1b53ef5.js" as="script">
 <link rel="preload" href="/foo/assets/js/main.5cb79c9b.js" as="script">
 </head>
@@ -15,4 +15,4 @@
 <script src="/foo/assets/js/runtime~main.c1b53ef5.js"></script>
 <script src="/foo/assets/js/main.5cb79c9b.js"></script>
 </body>
-</html>
\ No newline at end of file
+</html>
diff --git a/packages/docusaurus-plugin-content-blog/src/__tests__/__fixtures__/website/build-snap/blog/unlisted/index.html b/packages/docusaurus-plugin-content-blog/src/__tests__/__fixtures__/website/build-snap/blog/unlisted/index.html
index 118d4b581f..ce0d575ae3 100644
--- a/packages/docusaurus-plugin-content-blog/src/__tests__/__fixtures__/website/build-snap/blog/unlisted/index.html
+++ b/packages/docusaurus-plugin-content-blog/src/__tests__/__fixtures__/website/build-snap/blog/unlisted/index.html
@@ -5,7 +5,7 @@
 <meta name="viewport" content="width=device-width,initial-scale=1">
 <meta name="generator" content="Docusaurus v0.0.0-4458">
 <link rel="alternate" type="application/rss+xml" href="/foo/blog/rss.xml" title="My Site RSS Feed">
-<link rel="alternate" type="application/atom+xml" href="/foo/blog/atom.xml" title="My Site Atom Feed"><title data-react-helmet="true">Unlisted | My Site</title><meta data-react-helmet="true" name="twitter:card" content="summary_large_image"><meta data-react-helmet="true" property="og:url" content="https://your-docusaurus-test-site.com/foo/blog/unlisted"><meta data-react-helmet="true" name="docusaurus_locale" content="en"><meta data-react-helmet="true" name="docusaurus_tag" content="default"><meta data-react-helmet="true" property="og:title" content="unlisted | My Site"><meta data-react-helmet="true" name="description" content="this post is unlisted"><meta data-react-helmet="true" property="og:description" content="this post is unlisted"><meta data-react-helmet="true" property="og:type" content="article"><meta data-react-helmet="true" property="article:published_time" content="2020-08-15T00:00:00.000Z"><meta data-react-helmet="true" property="article:author" content="https://sebastienlorber.com"><link data-react-helmet="true" rel="icon" href="/foo/img/favicon.ico"><link data-react-helmet="true" rel="canonical" href="https://your-docusaurus-test-site.com/foo/blog/unlisted"><link data-react-helmet="true" rel="alternate" href="https://your-docusaurus-test-site.com/foo/blog/unlisted" hreflang="en"><link data-react-helmet="true" rel="alternate" href="https://your-docusaurus-test-site.com/foo/blog/unlisted" hreflang="x-default"><link rel="stylesheet" href="/foo/assets/css/styles.3c7ca81b.css">
+<link rel="alternate" type="application/atom+xml" href="/foo/blog/atom.xml" title="My Site Atom Feed"><title data-react-helmet="true">Unlisted | My Site</title><meta data-react-helmet="true" name="twitter:card" content="summary_large_image"><meta data-react-helmet="true" property="og:url" content="https://your-docusaurus-site.example.com/foo/blog/unlisted"><meta data-react-helmet="true" name="docusaurus_locale" content="en"><meta data-react-helmet="true" name="docusaurus_tag" content="default"><meta data-react-helmet="true" property="og:title" content="unlisted | My Site"><meta data-react-helmet="true" name="description" content="this post is unlisted"><meta data-react-helmet="true" property="og:description" content="this post is unlisted"><meta data-react-helmet="true" property="og:type" content="article"><meta data-react-helmet="true" property="article:published_time" content="2020-08-15T00:00:00.000Z"><meta data-react-helmet="true" property="article:author" content="https://sebastienlorber.com"><link data-react-helmet="true" rel="icon" href="/foo/img/favicon.ico"><link data-react-helmet="true" rel="canonical" href="https://your-docusaurus-site.example.com/foo/blog/unlisted"><link data-react-helmet="true" rel="alternate" href="https://your-docusaurus-site.example.com/foo/blog/unlisted" hreflang="en"><link data-react-helmet="true" rel="alternate" href="https://your-docusaurus-site.example.com/foo/blog/unlisted" hreflang="x-default"><link rel="stylesheet" href="/foo/assets/css/styles.3c7ca81b.css">
 <link rel="preload" href="/foo/assets/js/runtime~main.c1b53ef5.js" as="script">
 <link rel="preload" href="/foo/assets/js/main.5cb79c9b.js" as="script">
 </head>
diff --git a/packages/docusaurus-plugin-content-docs/src/__tests__/__fixtures__/empty-site/docusaurus.config.js b/packages/docusaurus-plugin-content-docs/src/__tests__/__fixtures__/empty-site/docusaurus.config.js
index f5548d644a..045f0529f2 100644
--- a/packages/docusaurus-plugin-content-docs/src/__tests__/__fixtures__/empty-site/docusaurus.config.js
+++ b/packages/docusaurus-plugin-content-docs/src/__tests__/__fixtures__/empty-site/docusaurus.config.js
@@ -8,7 +8,7 @@
 module.exports = {
   title: 'My Site',
   tagline: 'The tagline of my site',
-  url: 'https://your-docusaurus-test-site.com',
+  url: 'https://your-docusaurus-site.example.com',
   baseUrl: '/',
   favicon: 'img/favicon.ico',
   organizationName: 'facebook', // Usually your GitHub org/user name.
diff --git a/packages/docusaurus-plugin-content-docs/src/__tests__/__fixtures__/simple-site/docusaurus.config.js b/packages/docusaurus-plugin-content-docs/src/__tests__/__fixtures__/simple-site/docusaurus.config.js
index 6fa02ca102..ae48be19a4 100644
--- a/packages/docusaurus-plugin-content-docs/src/__tests__/__fixtures__/simple-site/docusaurus.config.js
+++ b/packages/docusaurus-plugin-content-docs/src/__tests__/__fixtures__/simple-site/docusaurus.config.js
@@ -8,7 +8,7 @@
 module.exports = {
   title: 'My Site',
   tagline: 'The tagline of my site',
-  url: 'https://your-docusaurus-test-site.com',
+  url: 'https://your-docusaurus-site.example.com',
   baseUrl: '/',
   favicon: 'img/favicon.ico',
 };
diff --git a/packages/docusaurus-plugin-content-docs/src/__tests__/__fixtures__/site-with-autogenerated-sidebar/docusaurus.config.js b/packages/docusaurus-plugin-content-docs/src/__tests__/__fixtures__/site-with-autogenerated-sidebar/docusaurus.config.js
index 6fa02ca102..ae48be19a4 100644
--- a/packages/docusaurus-plugin-content-docs/src/__tests__/__fixtures__/site-with-autogenerated-sidebar/docusaurus.config.js
+++ b/packages/docusaurus-plugin-content-docs/src/__tests__/__fixtures__/site-with-autogenerated-sidebar/docusaurus.config.js
@@ -8,7 +8,7 @@
 module.exports = {
   title: 'My Site',
   tagline: 'The tagline of my site',
-  url: 'https://your-docusaurus-test-site.com',
+  url: 'https://your-docusaurus-site.example.com',
   baseUrl: '/',
   favicon: 'img/favicon.ico',
 };
diff --git a/packages/docusaurus-plugin-content-docs/src/__tests__/__fixtures__/site-with-doc-label/docusaurus.config.js b/packages/docusaurus-plugin-content-docs/src/__tests__/__fixtures__/site-with-doc-label/docusaurus.config.js
index 6fa02ca102..ae48be19a4 100644
--- a/packages/docusaurus-plugin-content-docs/src/__tests__/__fixtures__/site-with-doc-label/docusaurus.config.js
+++ b/packages/docusaurus-plugin-content-docs/src/__tests__/__fixtures__/site-with-doc-label/docusaurus.config.js
@@ -8,7 +8,7 @@
 module.exports = {
   title: 'My Site',
   tagline: 'The tagline of my site',
-  url: 'https://your-docusaurus-test-site.com',
+  url: 'https://your-docusaurus-site.example.com',
   baseUrl: '/',
   favicon: 'img/favicon.ico',
 };
diff --git a/packages/docusaurus-plugin-content-docs/src/__tests__/__fixtures__/versioned-site/docusaurus.config.js b/packages/docusaurus-plugin-content-docs/src/__tests__/__fixtures__/versioned-site/docusaurus.config.js
index 3f3fbaad3f..f3e1e508f2 100644
--- a/packages/docusaurus-plugin-content-docs/src/__tests__/__fixtures__/versioned-site/docusaurus.config.js
+++ b/packages/docusaurus-plugin-content-docs/src/__tests__/__fixtures__/versioned-site/docusaurus.config.js
@@ -8,7 +8,7 @@
 module.exports = {
   title: 'Versioned Site',
   tagline: 'The tagline of my site',
-  url: 'https://your-docusaurus-test-site.com',
+  url: 'https://your-docusaurus-site.example.com',
   baseUrl: '/',
   favicon: 'img/favicon.ico',
   i18n: {
diff --git a/packages/docusaurus-plugin-content-pages/src/__tests__/__fixtures__/website/docusaurus.config.js b/packages/docusaurus-plugin-content-pages/src/__tests__/__fixtures__/website/docusaurus.config.js
index 6fa02ca102..ae48be19a4 100644
--- a/packages/docusaurus-plugin-content-pages/src/__tests__/__fixtures__/website/docusaurus.config.js
+++ b/packages/docusaurus-plugin-content-pages/src/__tests__/__fixtures__/website/docusaurus.config.js
@@ -8,7 +8,7 @@
 module.exports = {
   title: 'My Site',
   tagline: 'The tagline of my site',
-  url: 'https://your-docusaurus-test-site.com',
+  url: 'https://your-docusaurus-site.example.com',
   baseUrl: '/',
   favicon: 'img/favicon.ico',
 };
diff --git a/packages/docusaurus/src/commands/swizzle/__tests__/index.test.ts b/packages/docusaurus/src/commands/swizzle/__tests__/index.test.ts
index ee57ee4bfd..ba940b5c9d 100644
--- a/packages/docusaurus/src/commands/swizzle/__tests__/index.test.ts
+++ b/packages/docusaurus/src/commands/swizzle/__tests__/index.test.ts
@@ -28,7 +28,7 @@ async function createTestSiteConfig(siteDir: string) {
 module.exports = {
   title: 'My Site',
   tagline: 'Dinosaurs are cool',
-  url: 'https://your-docusaurus-test-site.com',
+  url: 'https://your-docusaurus-site.example.com',
   baseUrl: '/',
   themes: [
     function fixtureTheme() {
diff --git a/packages/docusaurus/src/server/plugins/__tests__/__fixtures__/site-with-plugin/badPlugins.docusaurus.config.js b/packages/docusaurus/src/server/plugins/__tests__/__fixtures__/site-with-plugin/badPlugins.docusaurus.config.js
index 1aa6972aba..df5ad0de73 100644
--- a/packages/docusaurus/src/server/plugins/__tests__/__fixtures__/site-with-plugin/badPlugins.docusaurus.config.js
+++ b/packages/docusaurus/src/server/plugins/__tests__/__fixtures__/site-with-plugin/badPlugins.docusaurus.config.js
@@ -8,7 +8,7 @@
 module.exports = {
   title: 'My Site',
   tagline: 'The tagline of my site',
-  url: 'https://your-docusaurus-test-site.com',
+  url: 'https://your-docusaurus-site.example.com',
   baseUrl: '/',
   favicon: 'img/favicon.ico',
   plugins: [42, true],
diff --git a/packages/docusaurus/src/server/plugins/__tests__/__fixtures__/site-with-plugin/docusaurus.config.js b/packages/docusaurus/src/server/plugins/__tests__/__fixtures__/site-with-plugin/docusaurus.config.js
index 29c66283fd..e62c4bee05 100644
--- a/packages/docusaurus/src/server/plugins/__tests__/__fixtures__/site-with-plugin/docusaurus.config.js
+++ b/packages/docusaurus/src/server/plugins/__tests__/__fixtures__/site-with-plugin/docusaurus.config.js
@@ -8,7 +8,7 @@
 module.exports = {
   title: 'My Site',
   tagline: 'The tagline of my site',
-  url: 'https://your-docusaurus-test-site.com',
+  url: 'https://your-docusaurus-site.example.com',
   baseUrl: '/',
   favicon: 'img/favicon.ico',
   plugins: [