diff --git a/README.md b/README.md
index b92aaf6..307c185 100644
--- a/README.md
+++ b/README.md
@@ -19,7 +19,7 @@ Speed and effectiveness of Node.js version compared to [html-minfier](https://gi
 
 Used average of results from running on [common web pages](./bench/tests). See [bench](./bench) folder for more details.
 
-![Chart showing speed of HTML minifiers](./bench/speed.png) ![Chart showing effectiveness of HTML minifiers](./bench/minification.png)
+<img width="435" alt="Chart showing speed of HTML minifiers" src="./bench/speed.png"> <img width="435" alt="Chart showing effectiveness of HTML minifiers" src="./bench/minification.png">
 
 ## Usage
 
diff --git a/bench/graph.js b/bench/graph.js
index f4af3cc..94c4754 100644
--- a/bench/graph.js
+++ b/bench/graph.js
@@ -18,6 +18,7 @@ const chartOptions = (title, displayLegend, yTick = t => t) => ({
       display: true,
       text: title,
       fontColor: '#333',
+      fontSize: 24,
     },
     scales: {
       xAxes: [{
@@ -27,6 +28,7 @@ const chartOptions = (title, displayLegend, yTick = t => t) => ({
         },
         ticks: {
           fontColor: '#666',
+          fontSize: 20,
         },
       }],
       yAxes: [{
@@ -38,6 +40,7 @@ const chartOptions = (title, displayLegend, yTick = t => t) => ({
           max: 1,
           callback: yTick,
           fontColor: '#666',
+          fontSize: 20,
         },
       }],
     },
@@ -52,7 +55,7 @@ const chartOptions = (title, displayLegend, yTick = t => t) => ({
 });
 
 const renderChart = async (file, cfg) => {
-  const chart = new chartjs(435, 320);
+  const chart = new chartjs(900, 650);
   await chart.drawChart(cfg);
   await chart.writeImageToFile('image/png', path.join(__dirname, `${file}.png`));
 };
diff --git a/bench/minification.png b/bench/minification.png
index 970b1a9..829e982 100644
Binary files a/bench/minification.png and b/bench/minification.png differ
diff --git a/bench/speed.png b/bench/speed.png
index 9337d80..a92eec4 100644
Binary files a/bench/speed.png and b/bench/speed.png differ