diff --git a/_config.yml b/_config.yml
index 60b1cb2..99e84d9 100644
--- a/_config.yml
+++ b/_config.yml
@@ -46,7 +46,7 @@ max_width: 800px
 # -----------------------------------------------------------------------------
 # Open Graph & Schema.org
 # -----------------------------------------------------------------------------
-# Display links to the page with a preview object on social media.
+
 serve_og_meta: false # Include Open Graph meta tags in the HTML head
 serve_schema_org: false # Include Schema.org in the HTML head
 og_image: # The site-wide (default for all links) Open Graph preview image
@@ -70,7 +70,7 @@ bing_site_verification:  # out your bing-site-verification ID (Bing Webmaster)
 # Blog
 # -----------------------------------------------------------------------------
 
-# blog_name: blog  # your blog must have a name for it to show up in the nav bar
+# blog_name: blog
 # blog_description:
 # permalink: /blog/:year/:title/
 
@@ -98,10 +98,9 @@ collections:
 # Jekyll settings
 # -----------------------------------------------------------------------------
 
-# Markdown and syntax highlight
 markdown: kramdown
 highlighter: rouge
-highlight_theme: github  # https://github.com/jwarby/jekyll-pygments-themes
+highlight_theme: github
 kramdown:
   input: GFM
   syntax_highlighter_opts:
@@ -112,7 +111,6 @@ kramdown:
       line_numbers: false
       start_line: 1
 
-# Includes & excludes
 include: ['_pages']
 exclude:
   - bin
diff --git a/_includes/metadata.html b/_includes/metadata.html
index 75a2752..cbb9460 100644
--- a/_includes/metadata.html
+++ b/_includes/metadata.html
@@ -1,5 +1,4 @@
 {% if site.enable_google_verification or site.enable_bing_verification %}
-    <!-- Website verification -->
     {% if site.enable_google_verification -%}
     <meta name="google-site-verification" content="{{ site.google_site_verification }}" />
     {%- endif -%}
@@ -8,7 +7,6 @@
     {%- endif -%}
 {%- endif %}
 
-    <!-- Standard metadata -->
     <meta charset="utf-8">
     <meta name="viewport" content="width=device-width, initial-scale=1, shrink-to-fit=no">
     <meta http-equiv="X-UA-Compatible" content="IE=edge">
@@ -43,35 +41,12 @@
     {%- endif %}
     <meta property="og:locale" content="{{ site.lang }}" />
 
-    <!-- Twitter card -->
-    <meta name="twitter:card" content="summary" />
-    <meta name="twitter:title" content="{%- if page.title -%}{{ page.title }}{%- else -%}{{ site.title }}{%- endif -%}" />
-    <meta name="twitter:description" content="{%- if page.description -%}{{ page.description }}{%- else -%}{{ site.description }}{%- endif -%}" />
-    {% if page.og_image or site.og_image -%}
-    <meta name="twitter:image" content="{%- if page.og_image -%}{{ page.og_image }}{%- else -%}{{ site.og_image }}{%- endif -%}" />
-    {%- endif %}
-    {% if site.twitter_username -%}
-    <meta name="twitter:site" content="@{{ site.twitter_username }}" />
-    <meta name="twitter:creator" content="@{{ site.twitter_username }}" />
-    {%- endif %}
 {%- endif %}
 
 {%- if site.serve_schema_org %}
 
     {%- comment -%} Social links generator for "sameAs schema" {%- endcomment %}
     {% assign sameaslinks = "" | split: "," %}
-    {%- if site.orcid_id -%}
-        {%- capture link -%}https://orcid.org/{{ site.orcid_id }}{%- endcapture -%}
-        {%- assign sameaslinks = sameaslinks | push: link -%}
-    {%- endif -%}
-    {%- if site.publons_id -%}
-        {%- capture link -%}https://publons.com/a/{{ site.publons_id }}/{%- endcapture -%}
-        {%- assign sameaslinks = sameaslinks | push: link -%}
-    {%- endif -%}
-    {%- if site.research_gate_profile -%}
-        {%- capture link -%}https://www.researchgate.net/profile/{{site.research_gate_profile}}{%- endcapture -%}
-        {%- assign sameaslinks = sameaslinks | push: link -%}
-    {%- endif -%}
     {%- if site.github_username -%}
         {%- capture link -%}https://github.com/{{ site.github_username }}{%- endcapture -%}
         {%- assign sameaslinks = sameaslinks | push: link -%}
@@ -80,50 +55,14 @@
         {%- capture link -%}https://www.linkedin.com/in/{{ site.linkedin_username }}{%- endcapture -%}
         {%- assign sameaslinks = sameaslinks | push: link -%}
     {%- endif -%}
-    {%- if site.twitter_username -%}
-        {%- capture link -%}https://twitter.com/{{ site.twitter_username }}{%- endcapture -%}
-        {%- assign sameaslinks = sameaslinks | push: link -%}
-    {%- endif -%}
-    {%- if site.medium_username -%}
-        {%- capture link -%}https://medium.com/@{{ site.medium_username }}{%- endcapture -%}
-        {%- assign sameaslinks = sameaslinks | push: link -%}
-    {%- endif -%}
-    {%- if site.quora_username -%}
-        {%- capture link -%}https://www.quora.com/profile/{{ site.quora_username }}{%- endcapture -%}
-        {%- assign sameaslinks = sameaslinks | push: link -%}
-    {%- endif -%}
-    {%- if site.blogger_url -%}
-        {%- capture link -%}{{ site.blogger_url }}{%- endcapture -%}
-        {%- assign sameaslinks = sameaslinks | push: link -%}
-    {%- endif -%}
     {%- if site.work_url -%}
         {%- capture link -%}{{ site.work_url }}{%- endcapture -%}
         {%- assign sameaslinks = sameaslinks | push: link -%}
     {%- endif -%}
-    {%- if site.wikidata_id -%}
-        {%- capture link -%}https://www.wikidata.org/wiki/{{ site.wikidata_id }}{%- endcapture -%}
-        {%- assign sameaslinks = sameaslinks | push: link -%}
-    {%- endif -%}
-    {%- if site.strava_userid -%}
-        {%- capture link -%}https://www.strava.com/athletes/{{ site.strava_userid }}{%- endcapture -%}
-        {%- assign sameaslinks = sameaslinks | push: link -%}
-    {%- endif -%}
-    {%- if site.keybase_username -%}
-        {%- capture link -%}https://keybase.io/{{ site.keybase_username }}{%- endcapture -%}
-        {%- assign sameaslinks = sameaslinks | push: link -%}
-    {%- endif -%}
     {%- if site.gitlab_username -%}
         {%- capture link -%}https://gitlab.com/{{ site.gitlab_username }}{%- endcapture -%}
         {%- assign sameaslinks = sameaslinks | push: link -%}
     {%- endif -%}
-    {%- if site.dblp_url -%}
-        {%- capture link -%}{{ site.dblp_url }}{%- endcapture -%}
-        {%- assign sameaslinks = sameaslinks | push: link -%}
-    {%- endif -%}
-    {%- if site.stackoverflow_id -%}
-        {%- capture link -%}https://stackoverflow.com/users/{{ site.stackoverflow_id }}{%- endcapture -%}
-        {%- assign sameaslinks = sameaslinks | push: link -%}
-    {%- endif -%}
     {%- if sameaslinks != blank -%}
         {%- assign sameaslinks = sameaslinks | split: "" -%}
     {%- endif -%}