diff --git a/src/_h5ai/client/css/fonts/Ubuntu-B.ttf b/src/_h5ai/client/css/fonts/Ubuntu-B.ttf
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diff --git a/src/_h5ai/client/css/fonts/Ubuntu-BI.ttf b/src/_h5ai/client/css/fonts/Ubuntu-BI.ttf
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diff --git a/src/_h5ai/client/css/fonts/Ubuntu-L.ttf b/src/_h5ai/client/css/fonts/Ubuntu-L.ttf
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diff --git a/src/_h5ai/client/css/fonts/UbuntuMono-B.ttf b/src/_h5ai/client/css/fonts/UbuntuMono-B.ttf
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diff --git a/src/_h5ai/client/css/fonts/UbuntuMono-R.ttf b/src/_h5ai/client/css/fonts/UbuntuMono-R.ttf
deleted file mode 100644
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diff --git a/src/_h5ai/client/css/fonts/UbuntuMono-RI.ttf b/src/_h5ai/client/css/fonts/UbuntuMono-RI.ttf
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diff --git a/src/_h5ai/client/css/inc/fonts.less b/src/_h5ai/client/css/inc/fonts.less
index 3c978207..737e3cb0 100644
--- a/src/_h5ai/client/css/inc/fonts.less
+++ b/src/_h5ai/client/css/inc/fonts.less
@@ -3,54 +3,54 @@
 	font-family: 'Ubuntu';
 	font-style: normal;
 	font-weight: 300;
-	src: local('Ubuntu Light'), local('Ubuntu-Light'), url(fonts/Ubuntu-L.woff) format('woff'), url(fonts/Ubuntu-L.ttf) format('ttf');
+	src: local('Ubuntu Light'), local('Ubuntu-Light'), url(fonts/Ubuntu-L.woff) format('woff');
 }
 
 @font-face {
 	font-family: 'Ubuntu';
 	font-style: normal;
 	font-weight: 700;
-	src: local('Ubuntu Bold'), local('Ubuntu-Bold'), url(fonts/Ubuntu-B.woff) format('woff'), url(fonts/Ubuntu-B.ttf) format('ttf');
+	src: local('Ubuntu Bold'), local('Ubuntu-Bold'), url(fonts/Ubuntu-B.woff) format('woff');
 }
 
 @font-face {
 	font-family: 'Ubuntu';
 	font-style: italic;
 	font-weight: 300;
-	src: local('Ubuntu Light Italic'), local('Ubuntu-LightItalic'), url(fonts/Ubuntu-LI.woff) format('woff'), url(fonts/Ubuntu-LI.ttf) format('ttf');
+	src: local('Ubuntu Light Italic'), local('Ubuntu-LightItalic'), url(fonts/Ubuntu-LI.woff) format('woff');
 }
 
 @font-face {
 	font-family: 'Ubuntu';
 	font-style: italic;
 	font-weight: 700;
-	src: local('Ubuntu Bold Italic'), local('Ubuntu-BoldItalic'), url(fonts/Ubuntu-BI.woff) format('woff'), url(fonts/Ubuntu-BI.ttf) format('ttf');
+	src: local('Ubuntu Bold Italic'), local('Ubuntu-BoldItalic'), url(fonts/Ubuntu-BI.woff) format('woff');
 }
 
 @font-face {
 	font-family: 'Ubuntu Mono';
 	font-style: normal;
 	font-weight: 400;
-	src: local('Ubuntu Mono'), local('UbuntuMono-Regular'), url(fonts/UbuntuMono-R.woff) format('woff'), url(fonts/UbuntuMono-R.ttf) format('ttf');
+	src: local('Ubuntu Mono'), local('UbuntuMono-Regular'), url(fonts/UbuntuMono-R.woff) format('woff');
 }
 
 @font-face {
 	font-family: 'Ubuntu Mono';
 	font-style: normal;
 	font-weight: 700;
-	src: local('Ubuntu Mono Bold'), local('UbuntuMono-Bold'), url(fonts/UbuntuMono-B.woff) format('woff'), url(fonts/UbuntuMono-B.ttf) format('ttf');
+	src: local('Ubuntu Mono Bold'), local('UbuntuMono-Bold'), url(fonts/UbuntuMono-B.woff) format('woff');
 }
 
 @font-face {
 	font-family: 'Ubuntu Mono';
 	font-style: italic;
 	font-weight: 400;
-	src: local('Ubuntu Mono Italic'), local('UbuntuMono-Italic'), url(fonts/UbuntuMono-RI.woff) format('woff'), url(fonts/UbuntuMono-RI.ttf) format('ttf');
+	src: local('Ubuntu Mono Italic'), local('UbuntuMono-Italic'), url(fonts/UbuntuMono-RI.woff) format('woff');
 }
 
 @font-face {
 	font-family: 'Ubuntu Mono';
 	font-style: italic;
 	font-weight: 700;
-	src: local('Ubuntu Mono Bold Italic'), local('UbuntuMono-BoldItalic'), url(fonts/Ubuntu-BI.woff) format('woff'), url(fonts/Ubuntu-BI.ttf) format('ttf');
+	src: local('Ubuntu Mono Bold Italic'), local('UbuntuMono-BoldItalic'), url(fonts/Ubuntu-BI.woff) format('woff');
 }