Chrome silently embedded in desktop application, and that can save files locally via Javascript
<p>Is it possible to have a Python application with a GUI (such as TkInter or WxPython) with :</p>

<ul>
<li><p>a Chrome browser as a widget using the main part of the GUI, displaying a certain .html page</p></li>
<li><p><strong>be able to save files locally thanks to Javascript that is run in the embedded Chrome</strong> (that is normally impossible with any browser for security reasons)</p></li>
</ul>

<p>If it's not possible in Python, I'm open to use another language (C++, etc.).</p>

<p><a href="https://i.stack.imgur.com/HHL90.jpg" rel="nofollow noreferrer"><img src="https://i.stack.imgur.com/HHL90.jpg" alt="enter image description here"></a></p>