diff --git a/slides/devconf/pictures/logo.svg b/slides/devconf/pictures/logo.svg
index 1906a836b..8bebda8a6 100644
--- a/slides/devconf/pictures/logo.svg
+++ b/slides/devconf/pictures/logo.svg
@@ -1,3 +1 @@
-<svg xmlns="http://www.w3.org/2000/svg" width="500" height="500" viewBox="0 0 500 500">
-	<path d="M50 500c-27.614 0-50-22.386-50-50v-400c0-27.614 22.386-50 50-50h400c27.615 0 50 22.386 50 50v219.224l-84.141-84.141-17.678 17.678 101.818 101.818v35.355l-119.496-119.496-17.678 17.678 137.174 137.174v35.397l-154.851-154.851-17.677 17.677 172.528 172.528v3.961c0 27.614-22.385 50-50 50h-109.618c4.128-39.908-9.142-81.331-39.788-111.978l-61.52-61.518-61.517-61.518c-24.497-24.498-24.568-64.143-.161-88.55 24.407-24.407 64.053-24.335 88.549.161l8.484 8.484v106.067l159.1-159.1h-106.067l-8.484-8.484c-53.893-53.893-141.111-54.051-194.808-.354s-53.539 140.916.354 194.809l61.518 61.518 61.519 61.518c16.006 16.006 21.584 38.48 16.719 58.945zm0 0" fill="#4B86C2"/>
-</svg>
\ No newline at end of file
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\ No newline at end of file
diff --git a/slides/devconf/shower/themes/bright/images/grid-16x10.svg b/slides/devconf/shower/themes/bright/images/grid-16x10.svg
index d1432a5da..f1d5f3a30 100644
--- a/slides/devconf/shower/themes/bright/images/grid-16x10.svg
+++ b/slides/devconf/shower/themes/bright/images/grid-16x10.svg
@@ -1,24 +1 @@
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-	<defs>
-		<style>
-			.stroke {
-				fill:none;
-				stroke:#56FFFE;
-				stroke-width:1;
-				}
-		</style>
-		<path d="M 0,0 H 1024" class="stroke" id="horizontal"/>
-		<path d="M 0,0 V 640" class="stroke" id="vertical"/>
-	</defs>
-	<use xlink:href="#horizontal" y="144"/>
-	<use xlink:href="#horizontal" y="192"/>
-	<use xlink:href="#horizontal" y="240"/>
-	<use xlink:href="#horizontal" y="288"/>
-	<use xlink:href="#horizontal" y="336"/>
-	<use xlink:href="#horizontal" y="384"/>
-	<use xlink:href="#horizontal" y="432"/>
-	<use xlink:href="#horizontal" y="480"/>
-	<use xlink:href="#horizontal" y="528"/>
-	<use xlink:href="#vertical" x="127"/>
-	<use xlink:href="#vertical" x="927"/>
-</svg>
\ No newline at end of file
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\ No newline at end of file
diff --git a/slides/devconf/shower/themes/bright/images/grid-4x3.svg b/slides/devconf/shower/themes/bright/images/grid-4x3.svg
index e5e72df0f..46a956176 100644
--- a/slides/devconf/shower/themes/bright/images/grid-4x3.svg
+++ b/slides/devconf/shower/themes/bright/images/grid-4x3.svg
@@ -1,26 +1 @@
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-	<defs>
-		<style>
-			.stroke {
-				fill:none;
-				stroke:#56FFFE;
-				stroke-width:1;
-				}
-		</style>
-		<path d="M 0,0 H 1024" class="stroke" id="horizontal"/>
-		<path d="M 0,0 V 768" class="stroke" id="vertical"/>
-	</defs>
-	<use xlink:href="#horizontal" y="160"/>
-	<use xlink:href="#horizontal" y="208"/>
-	<use xlink:href="#horizontal" y="256"/>
-	<use xlink:href="#horizontal" y="304"/>
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-	<use xlink:href="#horizontal" y="496"/>
-	<use xlink:href="#horizontal" y="544"/>
-	<use xlink:href="#horizontal" y="592"/>
-	<use xlink:href="#horizontal" y="640"/>
-	<use xlink:href="#vertical" x="127"/>
-	<use xlink:href="#vertical" x="927"/>
-</svg>
\ No newline at end of file
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\ No newline at end of file
diff --git a/slides/devconf/shower/themes/ribbon/images/grid-16x10.svg b/slides/devconf/shower/themes/ribbon/images/grid-16x10.svg
index 483f69dcf..1ab1a6962 100644
--- a/slides/devconf/shower/themes/ribbon/images/grid-16x10.svg
+++ b/slides/devconf/shower/themes/ribbon/images/grid-16x10.svg
@@ -1,24 +1 @@
-<svg xmlns="http://www.w3.org/2000/svg" xmlns:xlink="http://www.w3.org/1999/xlink" viewBox="0 0 1024 640">
-	<defs>
-		<style>
-			.stroke {
-				fill:none;
-				stroke:#56FFFE;
-				stroke-width:1;
-				}
-		</style>
-		<path d="M 0,0 H 1024" class="stroke" id="horizontal"/>
-		<path d="M 0,0 V 640" class="stroke" id="vertical"/>
-	</defs>
-	<use xlink:href="#horizontal" y="150"/>
-	<use xlink:href="#horizontal" y="227"/>
-	<use xlink:href="#horizontal" y="277"/>
-	<use xlink:href="#horizontal" y="327"/>
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-	<use xlink:href="#horizontal" y="427"/>
-	<use xlink:href="#horizontal" y="477"/>
-	<use xlink:href="#horizontal" y="527"/>
-	<use xlink:href="#vertical" x="120"/>
-	<use xlink:href="#vertical" x="512"/>
-	<use xlink:href="#vertical" x="904"/>
-</svg>
\ No newline at end of file
+<svg xmlns="http://www.w3.org/2000/svg" xmlns:xlink="http://www.w3.org/1999/xlink" viewBox="0 0 1024 640"><defs><path d="M0 0h1024" class="stroke" id="horizontal"/><path d="M0 0v640" class="stroke" id="vertical"/><style>.stroke{fill:none;stroke:#56fffe;stroke-width:1}</style></defs><use xlink:href="#horizontal" y="150"/><use xlink:href="#horizontal" y="227"/><use xlink:href="#horizontal" y="277"/><use xlink:href="#horizontal" y="327"/><use xlink:href="#horizontal" y="377"/><use xlink:href="#horizontal" y="427"/><use xlink:href="#horizontal" y="477"/><use xlink:href="#horizontal" y="527"/><use xlink:href="#vertical" x="120"/><use xlink:href="#vertical" x="512"/><use xlink:href="#vertical" x="904"/></svg>
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diff --git a/slides/devconf/shower/themes/ribbon/images/grid-4x3.svg b/slides/devconf/shower/themes/ribbon/images/grid-4x3.svg
index 756215c2e..0798fe089 100644
--- a/slides/devconf/shower/themes/ribbon/images/grid-4x3.svg
+++ b/slides/devconf/shower/themes/ribbon/images/grid-4x3.svg
@@ -1,26 +1 @@
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-	<defs>
-		<style>
-			.stroke {
-				fill:none;
-				stroke:#56FFFE;
-				stroke-width:1;
-				}
-		</style>
-		<path d="M 0,0 H 1024" class="stroke" id="horizontal"/>
-		<path d="M 0,0 V 768" class="stroke" id="vertical"/>
-	</defs>
-	<use xlink:href="#horizontal" y="150"/>
-	<use xlink:href="#horizontal" y="227"/>
-	<use xlink:href="#horizontal" y="277"/>
-	<use xlink:href="#horizontal" y="327"/>
-	<use xlink:href="#horizontal" y="377"/>
-	<use xlink:href="#horizontal" y="427"/>
-	<use xlink:href="#horizontal" y="477"/>
-	<use xlink:href="#horizontal" y="527"/>
-	<use xlink:href="#horizontal" y="577"/>
-	<use xlink:href="#horizontal" y="627"/>
-	<use xlink:href="#vertical" x="120"/>
-	<use xlink:href="#vertical" x="512"/>
-	<use xlink:href="#vertical" x="904"/>
-</svg>
\ No newline at end of file
+<svg xmlns="http://www.w3.org/2000/svg" xmlns:xlink="http://www.w3.org/1999/xlink" viewBox="0 0 1024 768"><defs><path d="M0 0h1024" class="stroke" id="horizontal"/><path d="M0 0v768" class="stroke" id="vertical"/><style>.stroke{fill:none;stroke:#56fffe;stroke-width:1}</style></defs><use xlink:href="#horizontal" y="150"/><use xlink:href="#horizontal" y="227"/><use xlink:href="#horizontal" y="277"/><use xlink:href="#horizontal" y="327"/><use xlink:href="#horizontal" y="377"/><use xlink:href="#horizontal" y="427"/><use xlink:href="#horizontal" y="477"/><use xlink:href="#horizontal" y="527"/><use xlink:href="#horizontal" y="577"/><use xlink:href="#horizontal" y="627"/><use xlink:href="#vertical" x="120"/><use xlink:href="#vertical" x="512"/><use xlink:href="#vertical" x="904"/></svg>
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diff --git a/slides/devconf/shower/themes/ribbon/images/progress.svg b/slides/devconf/shower/themes/ribbon/images/progress.svg
index 6b155ed8c..cb3218ad9 100644
--- a/slides/devconf/shower/themes/ribbon/images/progress.svg
+++ b/slides/devconf/shower/themes/ribbon/images/progress.svg
@@ -1,3 +1 @@
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-	<polygon fill="#4B86C2" points="0,0 1024,0 1034,10 0,10"/>
-</svg>
\ No newline at end of file
+<svg xmlns="http://www.w3.org/2000/svg" width="1034" height="10"><path fill="#4B86C2" d="M0 0h1024l10 10H0z"/></svg>
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diff --git a/slides/devconf/shower/themes/ribbon/images/ribbon.svg b/slides/devconf/shower/themes/ribbon/images/ribbon.svg
index 1770cafa1..fc3fc2b25 100644
--- a/slides/devconf/shower/themes/ribbon/images/ribbon.svg
+++ b/slides/devconf/shower/themes/ribbon/images/ribbon.svg
@@ -1,3 +1 @@
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-	<polygon fill="#C00" points="0,0 50,0 50,100 25,80 0,100"/>
-</svg>
\ No newline at end of file
+<svg xmlns="http://www.w3.org/2000/svg"><path fill="#C00" d="M0 0h50v100L25 80 0 100z"/></svg>
\ No newline at end of file