<p>When I inspect a web page (even stackoverflow), I always see</p> <pre class="prettyprint"><code><style type="text/css">/* This is not a zero-length file! */</style> <style type="text/css">/* This is not a zero-length file! */</style> </code></pre> <p>(yes, twice) at the bottom of the <code><head></code> tag.</p> <p>Google gives no answer about that...</p> <p>Does it come from Chrome? What's the point?</p> <h3>Edit</h3> <p>Thanks the others for the answer. This code was generated by the Instant Translate Chrome extension.</p>

Why there's 'This is not a zero-length file' in <head>

When I inspect a web page (even stackoverflow), I always see

<style type="text/css">/* This is not a zero-length file! */</style>
<style type="text/css">/* This is not a zero-length file! */</style>

(yes, twice) at the bottom of the <head> tag.

Google gives no answer about that...

Does it come from Chrome? What's the point?

Thanks the others for the answer. This code was generated by the Instant Translate Chrome extension.

Try disabling your extensions and see if it remains. If it disappears, try enabling your extensions one by one, to find the culprit.