diff --git a/Gemfile b/Gemfile
index 37f5eaa4..c419617e 100644
--- a/Gemfile
+++ b/Gemfile
@@ -1,2 +1,3 @@
 source 'https://rubygems.org'
 gem 'github-pages', group: :jekyll_plugins
+gem 'jekyll-seo-tag'
diff --git a/_config.yml b/_config.yml
index d77696c3..c6a1c58d 100644
--- a/_config.yml
+++ b/_config.yml
@@ -3,11 +3,27 @@ title: OpenSheetMusicDisplay
 email: thomas@opensheetmusicdisplay.org
 description: The first JavaScript engine for MusicXML using VexFlow
 baseurl: ""
-url: "https://opensheetmusicdisplay.github.io/"
+url: "https://opensheetmusicdisplay.org/"
 twitter_username: osmdengine
 github_username: opensheetmusicdisplay/opensheetmusicdisplay
 facebook_username: opensheetmusicdisplay
 
+# Used by jekyll-seo-tag
+author: OpenSheetMusicDisplay Contributors
+twitter:
+  username: osmdengine
+facebook:
+ app_id: 
+ publisher: 
+ admins: 
+logo: /assets/osmd_logo.svg
+social:
+  name: OpenSheetMusicDisplay
+  links:
+    - https://twitter.com/osmdengine
+    - https://www.facebook.com/opensheetmusicdisplay
+    - https://github.com/opensheetmusicdisplay
+
 # Build settings
 markdown: kramdown
 markdown_ext: md
@@ -18,3 +34,6 @@ page_gen:
     template: rule
     name: ruleName
     dir: rules
+
+plugins:
+  - jekyll-seo-tag
diff --git a/_includes/head.html b/_includes/head.html
index ead5dcaa..b4fbcc6f 100755
--- a/_includes/head.html
+++ b/_includes/head.html
@@ -15,4 +15,6 @@
         <script src="{{ script }}" type="text/javascript"></script>
       {% endfor %}
     {% endif %}
+
+    {% seo %}
 </head>
diff --git a/_posts/2016-03-12-opensheetmusicdisplay-preview.md b/_posts/2016-03-12-opensheetmusicdisplay-preview.md
index e67d51bc..1d68b31f 100644
--- a/_posts/2016-03-12-opensheetmusicdisplay-preview.md
+++ b/_posts/2016-03-12-opensheetmusicdisplay-preview.md
@@ -3,6 +3,7 @@ layout: post
 title:  "OpenSheetMusicDisplay Preview: this is going to happen over the next months"
 date:   2016-03-12 00:00:00
 author: Thomas Buchstätter
+lang:   en_US
 ---
 
 [MusicXML][2] is the most popular file format to store, archive, publish and share sheet music on the internet. It is open source and supported worldwide by hundreds of applications.
diff --git a/_posts/2016-04-14-reasons-javascript-engine-musicxml-vexflow.md b/_posts/2016-04-14-reasons-javascript-engine-musicxml-vexflow.md
index ddc88bcb..3cad375f 100644
--- a/_posts/2016-04-14-reasons-javascript-engine-musicxml-vexflow.md
+++ b/_posts/2016-04-14-reasons-javascript-engine-musicxml-vexflow.md
@@ -3,6 +3,7 @@ layout: post
 title:  "5 Reasons why we decided to build the first open source JavaScript engine for MusicXML using VexFlow"
 date:   2016-04-14 00:00:00
 author: Thomas Buchstätter
+lang:   en_US
 ---
 
 Every developer building solutions for digital sheet music using JavaScript sooner or later stumbles across [VexFlow][1]:
diff --git a/_posts/2016-09-19-hello-world-openmusicdisplay-musicxml.md b/_posts/2016-09-19-hello-world-openmusicdisplay-musicxml.md
index 5501db0e..1d5b1203 100755
--- a/_posts/2016-09-19-hello-world-openmusicdisplay-musicxml.md
+++ b/_posts/2016-09-19-hello-world-openmusicdisplay-musicxml.md
@@ -3,6 +3,7 @@ layout: post
 title:  "Hello World, OpenSheetMusicDisplay!"
 date:   2016-09-19 00:00:00
 author: Thomas Buchstätter
+lang:   en_US
 ---
 
 We are proud to introduce OpenSheetMusicDisplay, the JavaScript library for [MusicXML][1] using [VexFlow][0].
diff --git a/demo/index.md b/demo/index.md
index 0e02fdc4..0e63d75f 100644
--- a/demo/index.md
+++ b/demo/index.md
@@ -1,6 +1,7 @@
 ---
 layout: default
 title: Demo
+lang: en_US
 permalink: /demo/
 menu: main
 order: 4
diff --git a/develop/contributing/index.md b/develop/contributing/index.md
index c56d21f4..a99e27cd 100755
--- a/develop/contributing/index.md
+++ b/develop/contributing/index.md
@@ -2,6 +2,7 @@
 layout: page
 title: Contributing to OSMD
 permalink: /develop/contributing/
+lang: en_US
 ---
 
 A collection of open issues that are suitable for community contribution, is maintained on [Github][0].
diff --git a/develop/documentation/index.md b/develop/documentation/index.md
index a434bee8..3cd30671 100644
--- a/develop/documentation/index.md
+++ b/develop/documentation/index.md
@@ -2,6 +2,7 @@
 layout: page
 title: Documentation
 permalink: /develop/documentation/
+lang: en_US
 ---
 
 OSMD's documentation site is updated automatically on every release. This page describes how this is done.
diff --git a/develop/flow/index.md b/develop/flow/index.md
index fb02ff9d..f80546d2 100644
--- a/develop/flow/index.md
+++ b/develop/flow/index.md
@@ -2,6 +2,7 @@
 layout: page
 title: Data Flow
 permalink: /develop/data-flow/
+lang: en_US
 ---
 The diagram on this page describes the data flow from the MusicXML input to the final rendering.
 
diff --git a/develop/object-model/index.md b/develop/object-model/index.md
index 56589019..78477d92 100644
--- a/develop/object-model/index.md
+++ b/develop/object-model/index.md
@@ -2,6 +2,7 @@
 layout: page
 title: Music Sheet Object Model
 permalink: /develop/music-sheet-object-model/
+lang: en_US
 ---
 
 OSMD is using a slightly different object model for handling music sheet data than VexFlow. Both concepts are described on this page.
diff --git a/develop/project-structure/index.md b/develop/project-structure/index.md
index 6be803df..6ebdb02f 100644
--- a/develop/project-structure/index.md
+++ b/develop/project-structure/index.md
@@ -2,6 +2,7 @@
 layout: page
 title: Project Structure
 permalink: /develop/project-structure/
+lang: en_US
 ---
 
 ## Project Structure
diff --git a/develop/roadmap/index.md b/develop/roadmap/index.md
index 78534476..97a7d082 100644
--- a/develop/roadmap/index.md
+++ b/develop/roadmap/index.md
@@ -2,6 +2,7 @@
 layout: page
 title: Roadmap
 permalink: /develop/roadmap/
+lang: en_US
 ---
 
 ## Done
diff --git a/develop/running-tests/index.md b/develop/running-tests/index.md
index 4c8deb5c..ecd183b9 100755
--- a/develop/running-tests/index.md
+++ b/develop/running-tests/index.md
@@ -2,6 +2,7 @@
 layout: page
 title: Running Tests
 permalink: /develop/running-tests/
+lang: en_US
 ---
 
 This page describes how to run the OSMD test suite. The requires that you've already set up [OSMD for development][0].
diff --git a/develop/setup/index.md b/develop/setup/index.md
index f4450e4e..93d8b07f 100755
--- a/develop/setup/index.md
+++ b/develop/setup/index.md
@@ -2,6 +2,7 @@
 title: Setting up OSMD for Development
 layout: page
 permalink: "/develop/setup/"
+lang: en_US
 ---
 
 This page describes how to set up OpenSheetMusicDisplay for development.
diff --git a/index.md b/index.md
index feb4750a..c8a7ca90 100644
--- a/index.md
+++ b/index.md
@@ -2,6 +2,7 @@
 title: OpenSheetMusicDisplay
 layout: default
 subtitle: The first JavaScript engine for MusicXML using VexFlow.
+lang: en_US
 ---
 
 ## About OpenSheetMusicDisplay
diff --git a/usage/angular/index.md b/usage/angular/index.md
index e125b3db..6692f1c8 100644
--- a/usage/angular/index.md
+++ b/usage/angular/index.md
@@ -2,6 +2,7 @@
 layout: page
 title: The OSMD Angular Module
 permalink: /usage/angular/
+lang: en_US
 ---
 
 > The use of the name _Angular_ on this page refers to Angular version >= 2.0.0
diff --git a/usage/script/index.md b/usage/script/index.md
index 21cc8b14..a7a0c023 100755
--- a/usage/script/index.md
+++ b/usage/script/index.md
@@ -2,6 +2,7 @@
 layout: page
 title: Using OpenSheetMusicDisplay
 permalink: /usage/script/
+lang: en_US
 ---
 
 > This page focuses on using OpenSheetMusicDisplay as global library via script tag. For usage with module bundlers, take a look at the [TypeScript guide](/usage/typescript) instead.
diff --git a/usage/typescript/index.md b/usage/typescript/index.md
index c1b1089a..2a84cb3f 100644
--- a/usage/typescript/index.md
+++ b/usage/typescript/index.md
@@ -2,6 +2,7 @@
 layout: page
 title: Using OSMD with TypeScript
 permalink: /usage/typescript/
+lang: en_US
 ---
 
 [TypeScript][0] in combination with [Webpack][1], [SystemJS][2] or [Browserify][3], is the most comfortable and straightforward way of using OSMD.
diff --git a/usage/wordpress/index.md b/usage/wordpress/index.md
index 8f60f5bf..005555ef 100644
--- a/usage/wordpress/index.md
+++ b/usage/wordpress/index.md
@@ -2,6 +2,7 @@
 layout: page
 title: The OSMD WordPress Plugin
 permalink: /usage/wordpress/
+lang: en_US
 ---
 
 OpenSheetMusicDisplay will be available as WordPress plugin, which can be installed to display sheet music in blogs.