Validate HTML on local machine

Question

I'm currently trying to learn HTML and Java EE Servlet programming. I have an application server running on my local machine (Orion Application Server) and I'm connecting to web pages I've deployed on this server using a browser running on the same machine, directed to http://localhost/mypage.htm (for example).

I know W3C has a site you can go to that will validate an HTML page (and count how many errors are found for a given doctype), but that has to be a publicly available URL. How do you validate HTML on a locally running setup like I've described above?

Thanks.

Answer 1

http://validator.w3.org/#validate_by_upload if you don't mind uploading the HTML source file.

http://getfirebug.com/ if you're running Firefox can help with HTML validation issues as well.

Answer 2

many options:

see installation of w3c validation service:

http://validator.w3.org/docs/install.html

Firefox addons:

http://stackoverflow.com/questions/918419/firefox-addon-or-other-tool-to-locally-validate-html-pages

https://addons.mozilla.org/en-US/firefox/addon/249/

Offline validator:

http://htmlhelp.com/tools/validator/offline/index.html.en

Answer 3

If you're using firefox, this plugin is perfect:

http://users.skynet.be/mgueury/mozilla/

I use it all day. When you view source it shows you a list of errors and highlights them for you.