diff --git a/dyesub-tool/src/svg/measure.rs b/dyesub-tool/src/svg/measure.rs
index fd59c9f..092c2a6 100644
--- a/dyesub-tool/src/svg/measure.rs
+++ b/dyesub-tool/src/svg/measure.rs
@@ -23,11 +23,11 @@ impl SVGMeasure {
         Self { measure, unit }
     }
 
-    fn to_user_units(self) -> f64 {
+    pub fn to_user_units(self) -> f64 {
         self.measure * self.unit.to_user_units()
     }
 
-    fn to_unit(self, unit: SVGUnit) -> Self {
+    pub fn to_unit(self, unit: SVGUnit) -> Self {
         SVGMeasure {
             measure: self.to_user_units() / unit.to_user_units(),
             unit,
diff --git a/dyesub-tool/templates/document.xml b/dyesub-tool/templates/document.xml
index 7804fe5..de05c53 100644
--- a/dyesub-tool/templates/document.xml
+++ b/dyesub-tool/templates/document.xml
@@ -1,7 +1,13 @@
 <svg version="1.1"
      width="{{ dimensions.width }}" height="{{ dimensions.height }}"
      xmlns="http://www.w3.org/2000/svg">
+  <defs>
+    <style type="text/css"><![CDATA[@import url('https://fonts.googleapis.com/css2?family=M+PLUS+Rounded+1c:wght@700&display=swap');]]></style>
+  </defs>
   {% for (x, y) in positions %}
-    <rect x="{{ x }}" y="{{ y }}" rx="2mm" width="{{ box_size }}" height="{{ box_size }}" fill="none" stroke="#cccccc" stroke-width="1pt" />
+    <g x="{{ x }}" y="{{ y }}" transform="translate({{ x.to_user_units() }},{{ y.to_user_units() }})" width="{{ box_size }}" height="{{ box_size }}">
+      <rect width="{{ box_size }}" height="{{ box_size }}" fill="none" stroke="#cccccc" stroke-width="1pt" rx="2mm" />
+      <text x="{{ box_size / 2.0 }}" y="{{ box_size / 2.0 }}" dominant-baseline="middle" text-anchor="middle" style="font-family: 'M PLUS Rounded 1c'" font-size="0.5cm">あ</text>
+    </g>
   {% endfor %}
 </svg>