Paste HTML is a tool that'll let you paste or type in some HTML and publish it anonymously on the web so you can see what that code can do.

Copy the code from elsewhere by selecting it, right-clicking it and clicking "Copy." Right-click where you want the code in your blog's HTML source and click "Paste" to insert the code.

Running an HTML code via Notepad in Windows 11/10 is a super easy task. If you are not sure how, well, you are in the right place.