--- a/templates/sat_website/principles.html	Thu May 28 01:46:45 2015 +0200
+++ b/templates/sat_website/principles.html	Thu May 28 01:48:17 2015 +0200
@@ -85,10 +85,7 @@
 		    This is the most complicated aspect to understand, yet a crucial one. Being based on {{ xmpp }}, SàT is immediately decentralised (federated). But what does it mean? To get this point, we need to imagine the Internet as a set of layers. To make it easier, let's say there are only two layers: the physical and the logical one. On the physical layer, you are directly connected to your service provider, and indirectly to all the rest of the world.
 		    {% endblocktrans %}
 		    <div class="thumbnail">
-		        <img src="{% static "images/decentralisation/1_physical.png" %}" ><br/>
-		        <div class="caption">
-		            {% trans "The dots represents Internet users, the lines represents physical links - server-to-server links for the central triangle, client-to-server links for the rest." %}
-		        </div>
+		        <img class="schema" src="{% static "images/decentralisation/1_physical.svg" %}" ><br/>
 		    </div>
 	    </p>
 	    <p>
@@ -96,7 +93,7 @@
 		    On the logical layer, you are directly connected to your usual "social network", and since it's centralised, all its users are directly connected to it: it can access and own all the data, it can unilaterally decide to censor or exclude a user. It has too much power.
 	        {% endblocktrans %}
 		    <div class="thumbnail">
-		        <img src="{% static "images/decentralisation/2_logical_centralised.png" %}" ><br/>
+		        <img class="schema" src="{% static "images/decentralisation/2_logical_centralised.svg" %}" ><br/>
 		        <div class="caption">
 		            {% trans "Centralised communication system on top of the physical layer - note that one user on the right who refuses to use such a system." %}
 		        </div>
@@ -108,7 +105,7 @@
 	        All the users are connected to the same network, but each of them can decide which server they want to connect to. As a result, the data and the network administration's tasks are shared between all the servers. Is it possible to do that on the Internet? Yes, this is how the email works! That's decentralisation.
 		    {% endblocktrans %}
 	        <div class="thumbnail">
-	            <img src="{% static "images/decentralisation/3_logical_decentralised.png" %}" ><br/>
+	            <img class="schema" src="{% static "images/decentralisation/3_logical_decentralised.svg" %}" ><br/>
 	            <div class="caption">
 	                {% trans "Decentralised communication system on top the physical layer - the user on the right is still resisting." %}
 	            </div>
@@ -119,9 +116,9 @@
 		    Now what if you don't trust anybody? Then you are free to host your own server at home, via an association or in your work office. Is this possible too?! Yes, this is also how the email works! And this is what we did for our server libervia.org and without asking anybody's permission - the {{ xmpp }} interdomain {{ federation_prefix }}federation{{ federation_suffix }} makes it possible.
 		    {% endblocktrans %}
 	        <div class="thumbnail">
-	            <img src="{% static "images/decentralisation/4_logical_decentralised_self_hosting.png" %}" >
+	            <img class="schema" src="{% static "images/decentralisation/4_logical_decentralised_self_hosting.svg" %}" >
 	            <div class="caption">
-	                {% trans "Decentralised communication system with self-hosting ability - the dot on the right is still an Internet user, but for the service it's both a user and a server." %}
+	                {% trans "Decentralised communication system with self-hosting ability - the dot on the right is still an Internet user, but for the communication service it's both a user and a server." %}
 	            </div>
 	        </div>
 	    </p>