diff --git a/Gemfile b/Gemfile
index bf0c188..a8994d7 100644
--- a/Gemfile
+++ b/Gemfile
@@ -7,6 +7,7 @@ gem 'sidekiq', '~> 3.4.2'
 gem 'stretcher', '~> 1.21.1'
 gem 'faraday', '~> 0.8.9' # For stretcher compatibility
 gem 'simpleidn', '~> 0.0.5'
+gem 'http_accept_language'
 
 group :assets do
 	gem 'therubyracer', platforms: :ruby
diff --git a/app/controllers/application_controller.rb b/app/controllers/application_controller.rb
index 27ef6a7..a5fc557 100644
--- a/app/controllers/application_controller.rb
+++ b/app/controllers/application_controller.rb
@@ -2,4 +2,6 @@ class ApplicationController < ActionController::Base
 	# Prevent CSRF attacks by raising an exception.
 	# For APIs, you may want to use :null_session instead.
 	protect_from_forgery with: :exception
+
+	include HttpAcceptLanguage::AutoLocale
 end
diff --git a/app/views/application/_headers.erb b/app/views/application/_headers.erb
index a05b3f1..95ddc80 100644
--- a/app/views/application/_headers.erb
+++ b/app/views/application/_headers.erb
@@ -2,7 +2,9 @@
 	<nav class="navbar navbar-inverse navbar-fixed-top">
 		<div class="container">
 			<div class="navbar-header">
-				<span class="navbar-brand">CryptCheck</span>
+				<span>
+					<%= link_to 'CryptCheck', root_path, class: %i(navbar-brand) %>
+				</span>
 			</div>
 			<ul class="nav navbar-nav">
 				<li><%= link_to 'HTTPS / SMTP / XMPP', root_path %></li>
@@ -10,8 +12,8 @@
 				<li><%= link_to 'SSH', ssh_path %></li>
 			</ul>
 			<ul class="nav navbar-nav navbar-right">
-				<li><%= link_to 'Cipher suite', suite_path %></li>
-				<li><%= link_to 'Ciphers', ciphers_path %></li>
+				<li><%= link_to t('User agent compatibility'), suite_path %></li>
+				<li><%= link_to t('Supported ciphers'), ciphers_path %></li>
 				<!--
 				<li class="dropdown">
 					<a href="#" class="dropdown-toggle" data-toggle="dropdown" role="button" aria-haspopup="true" aria-expanded="false">
diff --git a/app/views/check/processing.html.erb b/app/views/check/processing.html.erb
index 3f52c63..abe2622 100644
--- a/app/views/check/processing.html.erb
+++ b/app/views/check/processing.html.erb
@@ -6,14 +6,14 @@
 		<div class="col-sm-8 col-sm-offset-2">
 			<h1>
 				<i class="fa fa-spinner fa-pulse"></i>
-				[<%= self.type.to_s.upcase %>] Analyse en cours de <%= @host %>
+				[<%= self.type.to_s.upcase %>] <%= t 'Currently analysing %{host}', host: @host  %>
 			</h1>
 			<p class="small">
-				Début de l’analyse : <%= l @result.date %>
+				<%= t 'Start of analysis: %{date}', date: l(@result.date) %>
 			</p>
 			<p class="pull-right">
-				Merci de patienter…
-				<span class="small">(Cette page se rafraîchit automatiquement toutes les 10 secondes)</span>
+				<%= t('Please waiting…') %>
+				<span class="small">(<%= t 'Cette page se rafraîchit automatiquement toutes les 10 secondes' %>)</span>
 			</p>
 		</div>
 	</div>
diff --git a/app/views/check/show.html.erb b/app/views/check/show.html.erb
index 1c3d0fd..8a36821 100644
--- a/app/views/check/show.html.erb
+++ b/app/views/check/show.html.erb
@@ -7,7 +7,7 @@
 		</div>
 		<% if Time.now - @result.date >= Rails.configuration.refresh_delay %>
 		<div class="col-sm-1">
-			<%= link_to 'Rafraîchir', {action: :refresh}, class: %i(btn btn-default) %>
+			<%= link_to t('Refresh'), {action: :refresh}, class: %i(btn btn-default) %>
 		</div>
 		<% end %>
 	</div>
@@ -19,7 +19,7 @@
 	<div class="row">
 		<div class="col-sm-12">
 			<h2><%= host.name %> - <%= host.ip %> : <%= host.port %></h2>
-			Error during analysis :
+			<%= t 'Error during analysis:' %>
 			<span class="label label-error"><%= error %></span>
 		</div>
 	</div>
@@ -45,12 +45,12 @@
 				</thead>
 				<tbody>
 					<%
-					   { 'Protocole' => 'protocol',
-						 'Échange de clef' => 'key_exchange',
-						 'Chiffrement' => 'cipher_strengths',
-						 'Total' => 'score'}.each do |name, v| %>
+					   { 'Protocol' => 'protocol',
+						 'Key exchange' => 'key_exchange',
+						 'Cipher' => 'cipher_strengths',
+						 'Overall' => 'score'}.each do |name, v| %>
 					<tr>
-						<th class="col-sm-4"><%= name %></th>
+						<th class="col-sm-4"><%= t name %></th>
 						<td class="col-sm-8"><%= score_progress grade.details[v] %></td>
 					</tr>
 					<% end %>
@@ -61,25 +61,25 @@
 			<table class="table table-bordered table-condensed table-striped">
 				<tbody>
 					<tr>
-						<th class="col-sm-4">Protocoles</th>
+						<th class="col-sm-4"><%= t 'Protocols' %></th>
 						<td class="col-sm-8"><%= protocol_labels handshake.protocols %></td>
 					</tr>
 					<tr>
-						<th>Clefs</th>
+						<th><%= t 'Keys' %></th>
 						<td>
-							<p>Certificat : <%= key_label handshake[:key] %></p>
+							<p><%= t 'Certificates:' %> <%= key_label handshake[:key] %></p>
 							<p>Diffie Hellman : <%= key_labels handshake.dh %></p>
 						</td>
 					</tr>
-					<% { 'Bonnes pratiques' => :success,
-					 'Alertes' => :warning,
-					 'Dangers' => :danger,
-					 'Erreurs' => :error }.each do |name, color|
+					<% { 'Good practices' => :success,
+					 'Warning' => :warning,
+					 'Critical' => :danger,
+					 'Fatal' => :error }.each do |name, color|
 						names = grade[color]
 						next if names.nil? or names.empty?
 					%>
 					<tr>
-						<th><%= name %></th>
+						<th><%= t name %></th>
 						<td>
 							<% names.each do |name| %>
 							<span class="label label-<%= color %>"><%= name.upcase %></span>
@@ -96,24 +96,24 @@
 			<table class="table table-bordered table-condensed table-striped center">
 				<thead>
 					<tr>
-						<th rowspan="2">Name</th>
-						<th colspan="2">Key exchange</th>
-						<th colspan="2">Authentification</th>
-						<th colspan="4">Encryption</th>
-						<th colspan="2">MAC</th>
-						<th rowspan="2">PFS</th>
+						<th rowspan="2"><%= t 'Name' %></th>
+						<th colspan="2"><%= t 'Key exchange' %></th>
+						<th colspan="2"><%= t 'Authentication' %></th>
+						<th colspan="4"><%= t 'Encryption' %></th>
+						<th colspan="2"><%= t 'MAC' %></th>
+						<th rowspan="2"><%= t 'PFS' %></th>
 					</tr>
 					<tr>
-						<th>Type</th>
-						<th>Key size</th>
-						<th>Type</th>
-						<th>Key size</th>
-						<th>Type</th>
-						<th>Key size</th>
-						<th>Block size</th>
-						<th>Mode</th>
-						<th>Type</th>
-						<th>Size</th>
+						<th><%= t 'Type' %></th>
+						<th><%= t 'Key size' %></th>
+						<th><%= t 'Type' %></th>
+						<th><%= t 'Key size' %></th>
+						<th><%= t 'Type' %></th>
+						<th><%= t 'Key size' %></th>
+						<th><%= t 'Block size' %></th>
+						<th><%= t 'Mode' %></th>
+						<th><%= t 'Type' %></th>
+						<th><%= t 'Size' %></th>
 					</tr>
 				</thead>
 				<tbody>
diff --git a/app/views/layouts/application.html.erb b/app/views/layouts/application.html.erb
index 07c3c79..ddaa028 100644
--- a/app/views/layouts/application.html.erb
+++ b/app/views/layouts/application.html.erb
@@ -1,7 +1,7 @@
 <!DOCTYPE html>
 <html>
 	<head>
-		<title>CryptcheckRails</title>
+		<title>CryptCheck</title>
 		<%= stylesheet_link_tag 'application', media: 'all' %>
 		<%= javascript_include_tag 'application' %>
 		<%= csrf_meta_tags %>
diff --git a/app/views/site/ciphers.html.erb b/app/views/site/ciphers.html.erb
index a8b16df..e7b1a71 100644
--- a/app/views/site/ciphers.html.erb
+++ b/app/views/site/ciphers.html.erb
@@ -3,20 +3,20 @@
 		<table class="table table-bordered table-condensed table-striped center col-sm-12">
 			<thead>
 				<tr>
-					<th rowspan="2">Name</th>
-					<th rowspan="2">Key exchange</th>
-					<th rowspan="2">Authentification</th>
-					<th colspan="4">Encryption</th>
-					<th colspan="2">MAC</th>
-					<th rowspan="2">PFS</th>
+					<th rowspan="2"><%= t 'Name' %></th>
+					<th rowspan="2"><%= t 'Key exchange' %></th>
+					<th rowspan="2"><%= t 'Authentication' %></th>
+					<th colspan="4"><%= t 'Encryption' %></th>
+					<th colspan="2"><%= t 'MAC' %></th>
+					<th rowspan="2"><%= t 'PFS' %></th>
 				</tr>
 				<tr>
-					<th>Type</th>
-					<th>Key size</th>
-					<th>Block size</th>
-					<th>Mode</th>
-					<th>Type</th>
-					<th>Size</th>
+					<th><%= t 'Type' %></th>
+					<th><%= t 'Key size' %></th>
+					<th><%= t 'Block size' %></th>
+					<th><%= t 'Mode' %></th>
+					<th><%= t 'Type' %></th>
+					<th><%= t 'Size' %></th>
 				</tr>
 			</thead>
 			<tbody>
diff --git a/app/views/site/index.html.erb b/app/views/site/index.html.erb
index c0225e0..a8ac469 100644
--- a/app/views/site/index.html.erb
+++ b/app/views/site/index.html.erb
@@ -1,7 +1,7 @@
 <div id="check" class="container">
 	<div class="row">
 		<div class="col-sm-12">
-			<h1>Vérifier votre domaine</h1>
+			<h1><%= t 'Check your domain' %></h1>
 			<%= form_tag root_path do %>
 				<div class="form-group">
 					<div class="col-sm-8">
@@ -11,7 +11,7 @@
 						<%= select_tag :type, options_for_select({'HTTPS' => :https, 'SMTP' => :smtp, 'XMPP' => :xmpp}), class: %i(form-control input-lg) %>
 					</div>
 					<div class="col-sm-2">
-						<%= submit_tag 'Test-moi !', class: %i(form-control btn btn-primary input-lg pull-right) %>
+						<%= submit_tag t('Test me!'), class: %i(form-control btn btn-primary input-lg pull-right) %>
 					</div>
 				</div>
 			<% end %>
diff --git a/app/views/site/suite.html.erb b/app/views/site/suite.html.erb
index 99e3911..8995fdd 100644
--- a/app/views/site/suite.html.erb
+++ b/app/views/site/suite.html.erb
@@ -1,28 +1,28 @@
 <div class="container">
 	<div class="row">
 		<div class="col-sm-12">
-			<h1>Cipher suite : <%= @suite %></h1>
+			<h1><%= t 'Cipher suite:' %> <%= @suite %></h1>
 		</div>
 	</div>
 	<div class="row">
 		<table class="table table-bordered table-condensed table-striped col-sm-12">
 			<thead>
 				<tr>
-					<th rowspan="2">Navigateur</th>
-					<th rowspan="2">Name</th>
-					<th rowspan="2">Key exchange</th>
-					<th rowspan="2">Authentification</th>
-					<th colspan="4">Encryption</th>
-					<th colspan="2">MAC</th>
-					<th rowspan="2">PFS</th>
+					<th rowspan="2"><%= t 'User agent' %></th>
+					<th rowspan="2"><%= t 'Name' %></th>
+					<th rowspan="2"><%= t 'Key exchange' %></th>
+					<th rowspan="2"><%= t 'Authentication' %></th>
+					<th colspan="4"><%= t 'Encryption' %></th>
+					<th colspan="2"><%= t 'MAC' %></th>
+					<th rowspan="2"><%= t 'PFS' %></th>
 				</tr>
 				<tr>
-					<th>Type</th>
-					<th>Key size</th>
-					<th>Block size</th>
-					<th>Mode</th>
-					<th>Type</th>
-					<th>Size</th>
+					<th><%= t 'Type' %></th>
+					<th><%= t 'Key size' %></th>
+					<th><%= t 'Block size' %></th>
+					<th><%= t 'Mode' %></th>
+					<th><%= t 'Type' %></th>
+					<th><%= t 'Size' %></th>
 				</tr>
 			</thead>
 			<tbody>
@@ -66,20 +66,20 @@
 		<table class="table table-bordered table-condensed table-striped center col-sm-12">
 			<thead>
 				<tr>
-					<th rowspan="2">Name</th>
-					<th rowspan="2">Key exchange</th>
-					<th rowspan="2">Authentification</th>
-					<th colspan="4">Encryption</th>
-					<th colspan="2">MAC</th>
-					<th rowspan="2">PFS</th>
+					<th rowspan="2"><%= t 'Name' %></th>
+					<th rowspan="2"><%= t 'Key exchange' %></th>
+					<th rowspan="2"><%= t 'Authentication' %></th>
+					<th colspan="4"><%= t 'Encryption' %></th>
+					<th colspan="2"><%= t 'MAC' %></th>
+					<th rowspan="2"><%= t 'PFS' %></th>
 				</tr>
 				<tr>
-					<th>Type</th>
-					<th>Key size</th>
-					<th>Block size</th>
-					<th>Mode</th>
-					<th>Type</th>
-					<th>Size</th>
+					<th><%= t 'Type' %></th>
+					<th><%= t 'Key size' %></th>
+					<th><%= t 'Block size' %></th>
+					<th><%= t 'Mode' %></th>
+					<th><%= t 'Type' %></th>
+					<th><%= t 'Size' %></th>
 				</tr>
 			</thead>
 			<tbody>
diff --git a/app/views/site/suite_index.html.erb b/app/views/site/suite_index.html.erb
index c1fd76e..4cc776b 100644
--- a/app/views/site/suite_index.html.erb
+++ b/app/views/site/suite_index.html.erb
@@ -1,14 +1,15 @@
 <div id="check" class="container">
 	<div class="row">
 		<div class="col-sm-12">
-			<h1>Compatibilités des user agents</h1>
+			<h1><%= t 'User agent compatibility' %></h1>
+			<h2><%= t 'Cipher suite' %></h2>
 			<%= form_tag suite_path do %>
 				<div class="form-group">
 					<div class="col-sm-10">
 						<%= text_field_tag :suite, nil, class: %i(form-control input-lg), placeholder: 'EECDH+AES' %>
 					</div>
 					<div class="col-sm-2">
-						<%= submit_tag 'Test-moi !', class: %i(form-control btn btn-primary input-lg pull-right) %>
+						<%= submit_tag t('Test me!'), class: %i(form-control btn btn-primary input-lg pull-right) %>
 					</div>
 				</div>
 			<% end %>
diff --git a/app/views/ssh/index.html.erb b/app/views/ssh/index.html.erb
index b80adb6..9a3216c 100644
--- a/app/views/ssh/index.html.erb
+++ b/app/views/ssh/index.html.erb
@@ -1,7 +1,7 @@
 <div id="ssh_check" class="container">
 	<div class="row">
 		<div class="col-sm-12">
-			<h1>Vérifier votre serveur SSH</h1>
+			<h1><%= t 'Check your SSH server' %></h1>
 			<%= form_tag root_path do %>
 				<div class="form-group">
 					<div class="col-sm-8">
@@ -12,7 +12,7 @@
 					</div>
 					<div class="col-sm-2">
 						<%= hidden_field_tag :type, :ssh %>
-						<%= submit_tag 'Test-moi !', class: %i(form-control btn btn-primary input-lg pull-right) %>
+						<%= submit_tag t('Test me!'), class: %i(form-control btn btn-primary input-lg pull-right) %>
 					</div>
 				</div>
 			<% end %>
diff --git a/app/views/ssh/show.html.erb b/app/views/ssh/show.html.erb
index e1d7ce3..c156b98 100644
--- a/app/views/ssh/show.html.erb
+++ b/app/views/ssh/show.html.erb
@@ -7,7 +7,7 @@
 		</div>
 		<% if Time.now - @result.date >= Rails.configuration.refresh_delay %>
 		<div class="col-sm-1">
-			<%= link_to 'Rafraîchir', {action: :refresh}, class: %i(btn btn-default) %>
+			<%= link_to t('Refresh'), {action: :refresh}, class: %i(btn btn-default) %>
 		</div>
 		<% end %>
 	</div>
@@ -19,7 +19,7 @@
 	<div class="row">
 		<div class="col-sm-12">
 			<h2><%= host.name %> - <%= host.ip %> : <%= host.port %></h2>
-			Error during analysis :
+			<%= t 'Error during analysis:' %>
 			<span class="label label-error"><%= error %></span>
 		</div>
 	</div>
@@ -37,7 +37,7 @@
 			<table class="table table-bordered table-condensed table-striped">
 				<tbody>
 					<tr>
-						<th>Échange de clef</th>
+						<th><%= t 'Key exchange' %></th>
 					</tr>
 					<% server.kex.each do |kex| %>
 					<tr>
@@ -46,7 +46,7 @@
 					<% end %>
 
 					<tr>
-						<th>Chiffrement</th>
+						<th><%= t 'Cipher' %></th>
 					</tr>
 					<% server.encryption.each do |cipher| %>
 					<tr>
@@ -55,7 +55,7 @@
 					<% end %>
 
 					<tr>
-						<th>HMAC</th>
+						<th><%= t 'HMAC' %></th>
 					</tr>
 					<% server.hmac.each do |hmac| %>
 						<tr>
@@ -64,7 +64,7 @@
 					<% end %>
 
 					<tr>
-						<th>Compression</th>
+						<th><%= t 'Compression' %></th>
 					</tr>
 					<% server.compression.each do |compression| %>
 						<tr>
@@ -73,7 +73,7 @@
 					<% end %>
 
 					<tr>
-						<th>Clefs</th>
+						<th><%= t 'Keys' %></th>
 					</tr>
 					<% server.key_.each do |key| %>
 					<tr>
diff --git a/app/views/tls/index.html.erb b/app/views/tls/index.html.erb
index 02198d9..ad139ca 100644
--- a/app/views/tls/index.html.erb
+++ b/app/views/tls/index.html.erb
@@ -1,7 +1,7 @@
 <div id="tls_check" class="container">
 	<div class="row">
 		<div class="col-sm-12">
-			<h1>Vérifier votre serveur TLS</h1>
+			<h1><%= t 'Check your TLS server' %></h1>
 			<%= form_tag root_path do %>
 				<div class="form-group">
 					<div class="col-sm-8">
@@ -12,7 +12,7 @@
 					</div>
 					<div class="col-sm-2">
 						<%= hidden_field_tag :type, :tls %>
-						<%= submit_tag 'Test-moi !', class: %i(form-control btn btn-primary input-lg pull-right) %>
+						<%= submit_tag t('Test me!'), class: %i(form-control btn btn-primary input-lg pull-right) %>
 					</div>
 				</div>
 			<% end %>
diff --git a/config/application.rb b/config/application.rb
index 86276a5..cf1b47a 100644
--- a/config/application.rb
+++ b/config/application.rb
@@ -35,6 +35,7 @@ module CryptcheckRails
 		# The default locale is :en and all translations from config/locales/*.rb,yml are auto loaded.
 		# config.i18n.load_path += Dir[Rails.root.join('my', 'locales', '*.{rb,yml}').to_s]
 		config.i18n.default_locale = :fr
+		config.i18n.available_locales = %w(en fr)
 		config.action_controller.include_all_helpers = false
 
 		config.refresh_delay = 1.hour
diff --git a/config/locales/en.yml b/config/locales/en.yml
index 63f1c3e..feaa150 100644
--- a/config/locales/en.yml
+++ b/config/locales/en.yml
@@ -1 +1,44 @@
 en:
+  User agent compatibility: User agent compatibility
+  Supported ciphers: Supported ciphers
+  Cipher suite: Cipher suite
+  "Cipher suite:": "Cipher suite:"
+
+  Check your domain: Check your domain
+  Check your SSH server: Check your SSH server
+  Check your SMTP server: Check your SMTP server
+  Test me!: Test me!
+
+  Currently analysing %{host}: Currently analysing %{host}
+  "Start of analysis: %{date}": "Start of analysis: %{date}"
+  Please waiting…: Please waiting…
+  This page refreshes automatically every 10 seconds: This page refreshes automatically every 10 seconds
+
+  "Error during analysis:": "Error during analysis:"
+  Refresh: Refresh
+
+  Protocol: Protocol
+  Protocols: Protocols
+  Keys: Keys
+  Key exchange: Key exchange
+  Cipher: Cipher
+  Overall: Overall
+  "Certificates:": "Certificats:"
+  Good practices: Good practices
+  Warning: Warning
+  Critical: Critical
+  Fatal: Fatal
+
+  User agent: User agent
+  Name: Name
+  Authentication: Authentication
+  Encryption: Encryption
+  Compression: Compression
+  MAC: MAC
+  HMAC: HMAC
+  PFS: PFS
+  Mode: Mode
+  Type: Type
+  Key size: Key size
+  Block size: Block size
+  Size: Size
diff --git a/config/locales/fr.yml b/config/locales/fr.yml
index cf8c473..6866b8e 100644
--- a/config/locales/fr.yml
+++ b/config/locales/fr.yml
@@ -1,4 +1,48 @@
 fr:
+  User agent compatibility: Compatibilité navigateur
+  Supported ciphers: Chiffrements supportés
+  Cipher suite: Suite de chiffrement
+  "Cipher suite:": "Suite de chiffrement :"
+
+  Check your domain: Testez votre domaine
+  Check your SSH server: Testez votre serveur SSH
+  Check your TLS server: Testez votre serveur TLS
+  Test me!: Testez-moi !
+
+  Currently analysing %{host}: Analyse en cours de %{host}
+  "Start of analysis: %{date}": "Début de l’analyse : %{date}"
+  Please waiting…: Merci de patienter…
+  This page refreshes automatically every 10 seconds: Cette page se rafraîchit automatiquement toutes les 10 secondes
+
+  "Error during analysis:": "Erreur durant l’analyse :"
+  Refresh: Rafraîchir
+
+  Protocol: Protocole
+  Protocols: Protocoles
+  Keys: Clefs
+  Key exchange: Échange de clef
+  Cipher: Chiffrement
+  Overall: Global
+  "Certificates:": "Certificats :"
+  Good practices: Bonnes pratiques
+  Warning: Attention
+  Critical: Critique
+  Fatal: Fatal
+
+  User agent: Navigateur
+  Name: Nom
+  Authentication: Authentification
+  Encryption: Chiffrement
+  Compression: Compression
+  MAC: MAC
+  HMAC: HMAC
+  PFS: PFS
+  Mode: Mode
+  Type: Type
+  Key size: Taille de clef
+  Block size: Taille de bloc
+  Size: Taille
+
   date:
     abbr_day_names:
     - dim