diff --git a/tools/README.md b/tools/README.md
new file mode 100644
index 0000000000..060d83a892
--- /dev/null
+++ b/tools/README.md
@@ -0,0 +1,22 @@
+# Tools
+
+* `run_on_all.sh` — optimize and fix all SVG files in the repository
+* `run_on_dirs.sh DIRECTORY...` — optimize and fix SVG files in the directory
+* `run_on_files.sh FILE...` — optimize and fix the SVG files
+* `_fix_color_scheme.sh FILE...` — remove a color property from `style="color:#5c616c;fill:currentColor;opacity:1"` if class `ColorScheme-*` exists
+* `svgo.yml` — [SVGO](https://github.com/svg/svgo) configuraion
+
+
+## Useful snippets
+
+Optimize and fix SVG files that are changed but not committed
+
+```
+git diff --name-only | xargs ./tools/run_on_files.sh
+```
+
+Optimize and fix SVG files that are committed in 043906b
+
+```
+git show --name-only 043906b | xargs ./tools/run_on_files.sh
+```
diff --git a/tools/_fix_color_scheme.sh b/tools/_fix_color_scheme.sh
new file mode 100755
index 0000000000..884adf3602
--- /dev/null
+++ b/tools/_fix_color_scheme.sh
@@ -0,0 +1,21 @@
+#!/bin/sh
+#
+# This script deletes a color property from style attribute
+# if a class ColorScheme-* exist, and deletes the style
+# attribute if is empty.
+#
+# limitations:
+#  - works only with single-line elements
+#
+# usage:
+#   _fix_color_scheme.sh FILE...
+
+set -e
+
+for file in "$@"; do
+	[ -f "$file" ] || continue
+
+	sed -r -i \
+		-e '/class="ColorScheme-/ s/color:#([0-9a-zA-Z]{3}|[0-9a-zA-Z]{6});?//g' \
+		-e 's/\s?style=""//g' "$file"
+done
diff --git a/tools/run_on_all.sh b/tools/run_on_all.sh
new file mode 100755
index 0000000000..91649d8834
--- /dev/null
+++ b/tools/run_on_all.sh
@@ -0,0 +1,27 @@
+#!/usr/bin/env bash
+#
+# usage:
+#  ./run_on_all.sh
+
+GIT_ROOT=$(git rev-parse --show-toplevel)
+
+# continue if is directory
+[ -d "$GIT_ROOT" ] || exit 1
+
+echo "=> Directory '$GIT_ROOT'." >&2
+echo "   Press <CTRL-C> to abort (wait 5 seconds) ..." >&2
+
+sleep 5
+
+# get all svg files w/o symlinks
+FILES=$(find "$GIT_ROOT" -type f -iname '*.svg' -print)
+
+for file in $FILES; do
+	echo "=> Workon '$file' ..." >&2
+
+	# optimize
+	svgo --config="$GIT_ROOT/tools/svgo.yml" -i "$file"
+
+	# fix
+	eval "$GIT_ROOT/tools/_fix_color_scheme.sh"	"$file"
+done
diff --git a/tools/run_on_dirs.sh b/tools/run_on_dirs.sh
new file mode 100755
index 0000000000..01d7dc62df
--- /dev/null
+++ b/tools/run_on_dirs.sh
@@ -0,0 +1,29 @@
+#!/usr/bin/env bash
+#
+# usage:
+#  ./run_on_dirs.sh DIR...
+
+GIT_ROOT=$(git rev-parse --show-toplevel)
+
+for dir in "$@"; do
+	# continue if arg is directory
+	[ -d "$dir" ] || continue
+
+	echo "=> Directory '$dir'." >&2
+	echo "   Press <CTRL-C> to abort (wait 5 seconds) ..." >&2
+
+	sleep 5
+
+	# get all svg files w/o symlinks
+	FILES=$(find "$dir" -type f -iname '*.svg' -print)
+
+	for file in $FILES; do
+		echo "=> Workon '$file' ..." >&2
+
+		# optimize
+		svgo --config="$GIT_ROOT/tools/svgo.yml" -i "$file"
+
+		# fix
+		eval "$GIT_ROOT/tools/_fix_color_scheme.sh"	"$file"
+	done
+done
diff --git a/tools/run_on_files.sh b/tools/run_on_files.sh
new file mode 100755
index 0000000000..612c3ff3e1
--- /dev/null
+++ b/tools/run_on_files.sh
@@ -0,0 +1,25 @@
+#!/usr/bin/env bash
+#
+# usage:
+#  ./run_on_files.sh FILE...
+
+GIT_ROOT=$(git rev-parse --show-toplevel)
+
+for file in "$@"; do
+	# continue if exist
+	[ -e "$file" ] || continue
+
+	# continue if not symlink
+	[ ! -L "$file" ] || continue
+
+	# continue if extension = svg
+	[ "${file##*.}" == "svg" ] || continue
+
+	echo "=> Workon '$file' ..." >&2
+
+	# optimize
+	svgo --config="$GIT_ROOT/tools/svgo.yml" -i "$file"
+
+	# fix
+	eval "$GIT_ROOT/tools/_fix_color_scheme.sh"	"$file"
+done
diff --git a/tools/3-svgo.sh b/tools/svgo.yml
similarity index 94%
rename from tools/3-svgo.sh
rename to tools/svgo.yml
index 98ab3fee55..3361dd9f02 100644
--- a/tools/3-svgo.sh
+++ b/tools/svgo.yml
@@ -5,16 +5,16 @@
 # for d in Papirus/16x16/* Papirus/22x22/* Papirus/24x24/* \
 #   Papirus/32x32/* Papirus/48x48/* Papirus/64x64/*
 # do
-#   svgo --config=.svgo.yml -f "$d"
+#   svgo --config=svgo.yml -f "$d"
 # done
 #
 # - or -
 #
-# svgo --config=.svgo.yml -f Papirus/16x16/actions
+# svgo --config=svgo.yml -f Papirus/16x16/actions
 #
 # - or -
 #
-#   svgo --config=.svgo.yml -i FILE
+#   svgo --config=svgo.yml -i FILE
 
 full: true
 multipass: true