In order to save HTML file online, you can use any hosting platform. Htmlsave.com is one good platform for saving HTML online for free.
There you can save any number of HTML files without sign up procedures. You can also view how your HTML code will look in the browser.
There is an option to set a password for your HTML code. So you can edit or update the HTML file. You can also share this link with other people.
Saving HTML file online is that simple. Everyone can use this service free of cost. HtmlSave.com takes care of all the saving and rendering process.
There are other platforms available online which can do similar job. And they may have more features than this for sure.
Our aim is to save any text or HTML code very easily. So anyone can do it easily. And it can be accessible by anyone without any restriction.