<p>The Nu Markup Checker— along with being usable as

<a href="http://validator.github.io/#usage">a standalone command-line client</a>—

can be run as an HTTP service, similar to

and

for browser-based checking of HTML documents over

the Web.

To that end, the checker is released as two separate packages:

replace <code class=arg>8888</code> with the port number.)

<p>You’ll see a form similar to

that allows you to enter the URL of an HTML document and have the

results for that document displayed in the browser.