Found great HTML "Checker" tool at w3.org

[woody]

Greetings.

For those who need to validate their final HTML pages ... and verify matching tags, and correct HTML TAG syntax, I recommend this free site:

https://validator.w3.org/

NOTE:
I had quite a "bout" between Chrome and IE11.

Chrome seems to be much more "forgiving" and failed JavaScripts and some missing HTML TAGS do not stop Chrome from presenting the page (as best it can).

However, the same HTML web page on IE11 fails and it was not obvious why. The result was IE11 would reference bits and pieces of other SIMILAR pages and images. So, it was very difficult to debug IE11.

IE11 is very picky about perfect TAG matching and correct TAG syntax.

Worth a look. https://validator.w3.org/

FYI.

Cheers,

//W