diff --git a/manage b/manage
index 9209f1d7a..64d46616b 100755
--- a/manage
+++ b/manage
@@ -295,7 +295,7 @@ gecko.driver() {
 }
 
 node.env() {
-    if ! required_commands npm fontforge ttfautohint; then
+    if ! required_commands npm; then
         info_msg "to install build tools use::"
         info_msg "   sudo -H ./utils/searx.sh install buildhost"
         die 1 "install needed build tools first"
diff --git a/searx/static/themes/simple/.gitignore b/searx/static/themes/simple/.gitignore
index 2c1954c3c..07e6e472c 100644
--- a/searx/static/themes/simple/.gitignore
+++ b/searx/static/themes/simple/.gitignore
@@ -1,2 +1 @@
 /node_modules
-ion.less
diff --git a/searx/static/themes/simple/fonts/ion.css b/searx/static/themes/simple/fonts/ion.css
index b65aca967..100524941 100644
--- a/searx/static/themes/simple/fonts/ion.css
+++ b/searx/static/themes/simple/fonts/ion.css
@@ -4,12 +4,12 @@
 
 @font-face {
 	font-family:"ion";
-	src:url("../fonts/ion.eot?14747ff3e5db3853c40bc9540e9f6c3a");
-	src:url("../fonts/ion.eot?14747ff3e5db3853c40bc9540e9f6c3a#iefix") format("embedded-opentype"),
-		url("../fonts/ion.woff2?14747ff3e5db3853c40bc9540e9f6c3a") format("woff2"),
-		url("../fonts/ion.woff?14747ff3e5db3853c40bc9540e9f6c3a") format("woff"),
-		url("../fonts/ion.ttf?14747ff3e5db3853c40bc9540e9f6c3a") format("truetype"),
-		url("../fonts/ion.svg?14747ff3e5db3853c40bc9540e9f6c3a#ion") format("svg");
+	src:url("../fonts/ion.eot?31a1b735188db616a2142d17947e8a45");
+	src:url("../fonts/ion.eot?31a1b735188db616a2142d17947e8a45#iefix") format("embedded-opentype"),
+		url("../fonts/ion.woff2?31a1b735188db616a2142d17947e8a45") format("woff2"),
+		url("../fonts/ion.woff?31a1b735188db616a2142d17947e8a45") format("woff"),
+		url("../fonts/ion.ttf?31a1b735188db616a2142d17947e8a45") format("truetype"),
+		url("../fonts/ion.svg?31a1b735188db616a2142d17947e8a45#ion") format("svg");
 	font-weight:normal;
 	font-style:normal;
 }
diff --git a/searx/static/themes/simple/fonts/ion.html b/searx/static/themes/simple/fonts/ion.html
index 011a63170..0a7b49c60 100644
--- a/searx/static/themes/simple/fonts/ion.html
+++ b/searx/static/themes/simple/fonts/ion.html
@@ -61,12 +61,12 @@
 
 @font-face {
 	font-family:"ion";
-	src:url("ion.eot?14747ff3e5db3853c40bc9540e9f6c3a");
-	src:url("ion.eot?14747ff3e5db3853c40bc9540e9f6c3a#iefix") format("embedded-opentype"),
-		url("ion.woff2?14747ff3e5db3853c40bc9540e9f6c3a") format("woff2"),
-		url("ion.woff?14747ff3e5db3853c40bc9540e9f6c3a") format("woff"),
-		url("ion.ttf?14747ff3e5db3853c40bc9540e9f6c3a") format("truetype"),
-		url("ion.svg?14747ff3e5db3853c40bc9540e9f6c3a#ion") format("svg");
+	src:url("ion.eot?31a1b735188db616a2142d17947e8a45");
+	src:url("ion.eot?31a1b735188db616a2142d17947e8a45#iefix") format("embedded-opentype"),
+		url("ion.woff2?31a1b735188db616a2142d17947e8a45") format("woff2"),
+		url("ion.woff?31a1b735188db616a2142d17947e8a45") format("woff"),
+		url("ion.ttf?31a1b735188db616a2142d17947e8a45") format("truetype"),
+		url("ion.svg?31a1b735188db616a2142d17947e8a45#ion") format("svg");
 	font-weight:normal;
 	font-style:normal;
 }
diff --git a/searx/static/themes/simple/fonts/ion.svg b/searx/static/themes/simple/fonts/ion.svg
index c16155aab..01c2ce025 100644
Binary files a/searx/static/themes/simple/fonts/ion.svg and b/searx/static/themes/simple/fonts/ion.svg differ
diff --git a/searx/static/themes/simple/fonts/ion.ttf b/searx/static/themes/simple/fonts/ion.ttf
index 8334ba424..78264a571 100644
Binary files a/searx/static/themes/simple/fonts/ion.ttf and b/searx/static/themes/simple/fonts/ion.ttf differ
diff --git a/searx/static/themes/simple/fonts/ion.woff b/searx/static/themes/simple/fonts/ion.woff
index dec02f7d6..84dd55888 100644
Binary files a/searx/static/themes/simple/fonts/ion.woff and b/searx/static/themes/simple/fonts/ion.woff differ
diff --git a/searx/static/themes/simple/fonts/ion.woff2 b/searx/static/themes/simple/fonts/ion.woff2
index 17ef58b9c..1ab664a67 100644
Binary files a/searx/static/themes/simple/fonts/ion.woff2 and b/searx/static/themes/simple/fonts/ion.woff2 differ
diff --git a/searx/static/themes/simple/gruntfile.js b/searx/static/themes/simple/gruntfile.js
index 1dea80bd4..e34d4ee4f 100644
--- a/searx/static/themes/simple/gruntfile.js
+++ b/searx/static/themes/simple/gruntfile.js
@@ -7,7 +7,7 @@ module.exports = function(grunt) {
     watch: {
       scripts: {
         files: ['src/**'],
-        tasks: ['jshint', 'concat', 'uglify', 'webfont', 'less:development', 'less:production']
+        tasks: ['jshint', 'copy', 'concat', 'uglify', 'less:development', 'less:production']
       }
     },
     jshint: {
@@ -117,7 +117,7 @@ module.exports = function(grunt) {
           'node_modules/ionicons-npm/src/android-close.svg',	  
         ],
         dest: 'fonts',
-        destLess: '.',
+        destLess: 'src/generated',
         options: {
           font: 'ion',
           hashes : true,
@@ -194,5 +194,5 @@ module.exports = function(grunt) {
 
   grunt.registerTask('test', ['jshint']);
 
-  grunt.registerTask('default', ['jshint', 'copy', 'concat', 'uglify', 'webfont', 'less:development', 'less:production']);
+  grunt.registerTask('default', ['jshint', 'copy', 'concat', 'uglify', 'less:development', 'less:production']);
 };
diff --git a/searx/static/themes/simple/package.json b/searx/static/themes/simple/package.json
index d31aa2041..5c075d154 100644
--- a/searx/static/themes/simple/package.json
+++ b/searx/static/themes/simple/package.json
@@ -24,6 +24,7 @@
     "all": "npm install && grunt",
     "build": "grunt",
     "watch": "grunt watch",
+    "webfont": "grunt webfont",
     "clean": "rm -Rf node_modules package-lock.json ion.less"
   }
 }
diff --git a/searx/static/themes/simple/src/generated/ion.less b/searx/static/themes/simple/src/generated/ion.less
new file mode 100644
index 000000000..67158206f
--- /dev/null
+++ b/searx/static/themes/simple/src/generated/ion.less
@@ -0,0 +1,181 @@
+// Generated by grunt-webfont
+
+
+
+@font-face {
+	font-family:"ion";
+	src:url("../fonts/ion.eot?31a1b735188db616a2142d17947e8a45");
+	src:url("../fonts/ion.eot?31a1b735188db616a2142d17947e8a45#iefix") format("embedded-opentype"),
+		url("../fonts/ion.woff2?31a1b735188db616a2142d17947e8a45") format("woff2"),
+		url("../fonts/ion.woff?31a1b735188db616a2142d17947e8a45") format("woff"),
+		url("../fonts/ion.ttf?31a1b735188db616a2142d17947e8a45") format("truetype"),
+		url("../fonts/ion.svg?31a1b735188db616a2142d17947e8a45#ion") format("svg");
+	font-weight:normal;
+	font-style:normal;
+}
+
+.ion-icon {
+	&:before {
+		font-family:"ion";
+	}
+	display:inline-block;
+	line-height:1;
+	font-weight:normal;
+	font-style:normal;
+	speak:none;
+	text-decoration:inherit;
+	text-transform:none;
+	text-rendering:auto;
+	-webkit-font-smoothing:antialiased;
+	-moz-osx-font-smoothing:grayscale;
+}
+
+
+// Icons
+
+.ion-navicon-round {
+	&:before {
+		content:"\f101";
+	}
+}
+
+
+.ion-search {
+	&:before {
+		content:"\f102";
+	}
+}
+
+
+.ion-play {
+	&:before {
+		content:"\f103";
+	}
+}
+
+
+.ion-link {
+	&:before {
+		content:"\f104";
+	}
+}
+
+
+.ion-chevron-up {
+	&:before {
+		content:"\f105";
+	}
+}
+
+
+.ion-chevron-left {
+	&:before {
+		content:"\f106";
+	}
+}
+
+
+.ion-chevron-right {
+	&:before {
+		content:"\f107";
+	}
+}
+
+
+.ion-arrow-down-a {
+	&:before {
+		content:"\f108";
+	}
+}
+
+
+.ion-arrow-up-a {
+	&:before {
+		content:"\f109";
+	}
+}
+
+
+.ion-arrow-swap {
+	&:before {
+		content:"\f10a";
+	}
+}
+
+
+.ion-arrow-dropdown {
+	&:before {
+		content:"\f10b";
+	}
+}
+
+
+.ion-globe {
+	&:before {
+		content:"\f10c";
+	}
+}
+
+
+.ion-time {
+	&:before {
+		content:"\f10d";
+	}
+}
+
+
+.ion-location {
+	&:before {
+		content:"\f10e";
+	}
+}
+
+
+.ion-warning {
+	&:before {
+		content:"\f10f";
+	}
+}
+
+
+.ion-error {
+	&:before {
+		content:"\f110";
+	}
+}
+
+
+.ion-film-outline {
+	&:before {
+		content:"\f111";
+	}
+}
+
+
+.ion-music-note {
+	&:before {
+		content:"\f112";
+	}
+}
+
+
+.ion-more-vertical {
+	&:before {
+		content:"\f113";
+	}
+}
+
+
+.ion-magnet {
+	&:before {
+		content:"\f114";
+	}
+}
+
+
+.ion-close {
+	&:before {
+		content:"\f115";
+	}
+}
+
diff --git a/searx/static/themes/simple/src/less/style.less b/searx/static/themes/simple/src/less/style.less
index e0feb6da3..5ffd7d59b 100644
--- a/searx/static/themes/simple/src/less/style.less
+++ b/searx/static/themes/simple/src/less/style.less
@@ -11,6 +11,8 @@
 
 @import (inline) "../../node_modules/normalize.css/normalize.css";
 
+@import "../generated/ion.less";
+
 @import "definitions.less";
 
 @import "mixins.less";
@@ -22,8 +24,6 @@
 @import "autocomplete.less";
 
 // ion-icon
-@import "../../ion.less";
-
 .ion-icon-big {
   .ion-icon;
   font-size: 149%;
diff --git a/utils/searx.sh b/utils/searx.sh
index 69068b914..a777eab26 100755
--- a/utils/searx.sh
+++ b/utils/searx.sh
@@ -51,7 +51,7 @@ shellcheck"
 BUILD_PACKAGES_debian="\
 firefox graphviz imagemagick texlive-xetex librsvg2-bin
 texlive-latex-recommended texlive-extra-utils fonts-dejavu
-latexmk fontforge ttfautohint
+latexmk
 npm"
 
 # pacman packages
@@ -63,7 +63,7 @@ shellcheck"
 
 BUILD_PACKAGES_arch="\
 firefox graphviz imagemagick texlive-bin extra/librsvg
-texlive-core texlive-latexextra ttf-dejavu fontforge ttfautohint
+texlive-core texlive-latexextra ttf-dejavu
 npm"
 
 # dnf packages
@@ -77,7 +77,7 @@ BUILD_PACKAGES_fedora="\
 firefox graphviz graphviz-gd ImageMagick librsvg2-tools
 texlive-xetex-bin texlive-collection-fontsrecommended
 texlive-collection-latex dejavu-sans-fonts dejavu-serif-fonts
-dejavu-sans-mono-fonts fontforge ttfautohint
+dejavu-sans-mono-fonts
 npm"
 
 # yum packages