diff --git a/README.md b/README.md
index 878cead..e464a55 100644
--- a/README.md
+++ b/README.md
@@ -1,78 +1,92 @@
 ## html_to_pdf
+
 Generate a simple PDF invoice from HTML using [puppeteer](https://github.com/GoogleChrome/puppeteer) & [handlebars](http://handlebarsjs.com/)
 
 ![Invoice](https://raw.githubusercontent.com/chuongtrh/html_to_pdf/master/screenshot/invoice.png)
+
 ## Introduce
-- [Puppeteer](https://github.com/GoogleChrome/puppeteer) 
-> Puppeteer is Node.js library giving you access to a headless Chrome browser. This makes it a breeze to generate PDF files with Node.js
+
+- [Puppeteer](https://github.com/GoogleChrome/puppeteer)
+
+  > Puppeteer is Node.js library giving you access to a headless Chrome browser. This makes it a breeze to generate PDF files with Node.js
 
 - [Handlebars](http://handlebarsjs.com/)
-> Handlebars provides the power necessary to let you build semantic templates effectively with no frustration
+  > Handlebars provides the power necessary to let you build semantic templates effectively with no frustration
 
 ## How to use
+
 - Run `npm install` to install package in package.json
 - Run `node pdf.js` to generate invoice.pdf
+
 ## The PDF Invoice from HTML
+
 1. Prepare content html (invoice.html)
 2. Using handlebars to binding data to content html
 3. Using Puppeteer to generate pdf from final html
+
 ```js
 const fs = require("fs");
 const path = require("path");
-const puppeteer = require('puppeteer');
+const puppeteer = require("puppeteer");
 const handlebars = require("handlebars");
 
 (async () => {
+  var dataBinding = {
+    items: [
+      {
+        name: "item 1",
+        price: 100,
+      },
+      {
+        name: "item 2",
+        price: 200,
+      },
+      {
+        name: "item 3",
+        price: 300,
+      },
+    ],
+    total: 600,
+    isWatermark: false,
+  };
+
+  var templateHtml = fs.readFileSync(
+    path.join(process.cwd(), "invoice.html"),
+    "utf8"
+  );
+  var template = handlebars.compile(templateHtml);
+  var finalHtml = encodeURIComponent(template(dataBinding));
+
+  var options = {
+    format: "A4",
+    headerTemplate: "<p></p>",
+    footerTemplate: "<p></p>",
+    displayHeaderFooter: false,
+    margin: {
+      top: "40px",
+      bottom: "100px",
+    },
+    printBackground: true,
+    path: "invoice.pdf",
+  };
 
-    var dataBinding = {
-        items: [{
-                name: "item 1",
-                price: 100
-            },
-            {
-                name: "item 2",
-                price: 200
-            },
-            {
-                name: "item 3",
-                price: 300
-            }
-        ],
-        total: 600,
-        isWatermark: false
-    }
-    
-    var templateHtml = fs.readFileSync(path.join(process.cwd(), 'invoice.html'), 'utf8');
-    var template = handlebars.compile(templateHtml);
-    var finalHtml = template(dataBinding);
-    var options = {
-        format: 'A4',
-        headerTemplate: "<p></p>",
-        footerTemplate: "<p></p>",
-        displayHeaderFooter: false,
-        margin: {
-            top: "40px",
-            bottom: "100px"
-        },
-        printBackground: true,
-        path: 'invoice.pdf'
-    }
-
-    const browser = await puppeteer.launch({
-        args: ['--no-sandbox'],
-        headless: true
-    });
-    const page = await browser.newPage();
-    await page.goto(`data:text/html,${finalHtml}`, {
-        waitUntil: 'networkidle0'
-    });
-    await page.pdf(options);
-    await browser.close();
+  const browser = await puppeteer.launch({
+    args: ["--no-sandbox"],
+    headless: true,
+  });
+  const page = await browser.newPage();
+  await page.goto(`data:text/html;charset=UTF-8,${finalHtml}`, {
+    waitUntil: "networkidle0",
+  });
+  await page.pdf(options);
+  await browser.close();
 })();
 ```
 
 ## How to display paid stamp watermark on invoice?
+
 Using handlebars to check param `isWatermark`
+
 ```js
   {{#if isWatermark}}
     <div style="border-width: 6px;border-style: solid; border-color: #008000;border-radius: 8px; color: #008000; opacity:0.6; position: absolute; z-index: 1; left:40%; top:30%; font-size: 60pt;-webkit-transform: rotate(-45deg);-ms-transform: rotate(-45deg);transform: rotate(-45deg); font-family: 'Helvetica Neue', 'Helvetica', Helvetica, Arial, sans-serif;">
@@ -84,4 +98,5 @@ Change `isWatermark: true` and run `node pdf.js` again
 ![Invoice with stamp paid watermark](https://raw.githubusercontent.com/chuongtrh/html_to_pdf/master/screenshot/invoice_paid.png)
 
 ## License
+
 html_to_pdf is available under the MIT license. See the LICENSE file for more info.