1) Option One: Online
https://magic.reactjs.net/htmltojsx.htm
or
https://transform.tools/html-to-jsx
2) Option Two: System (assuming you have npm)
npm install html-to-jsx<!DOCTYPE html>
<html lang="en" >
<head>
<meta charset="UTF-8">
<title>CodePen - React Notes</title>
<link rel='stylesheet' href='https://fonts.googleapis.com/css?family=Merriweather:400,700'><link rel="stylesheet" href="./style.css">
</head>
<body>
<!-- partial:index.partial.html -->
<div id="root"></div>
<!-- partial -->
<script src='https://cdnjs.cloudflare.com/ajax/libs/react/16.2.0/umd/react.development.js'></script>
<script src='https://cdnjs.cloudflare.com/ajax/libs/react-dom/16.2.0/umd/react-dom.development.js'></script><script src="./script.js"></script>
</body>
</html>
<!DOCTYPE html>
<html lang = "ru">
<head>
<title>first level</title>
<meta charset = "UTF-8">
<meta name = "description" content = "just check it">
<meta name = "keywords" content = "HTML, CSS, JavaScript">
<meta name = "author" content = "jek-12">
<meta name = "viewport" content = "width=device-width, initial-scale=1.0">
<link rel="stylesheet" href="https://unpkg.com/swiper/swiper-bundle.min.css"/>
<link rel = "stylesheet" href = "style.css">
</head>