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HTTP headers

HTTP headers allow the client and the server to pass additional information with the request or the response. A request header consists of its case-insensitive name followed by a colon ':', then by its value (without line breaks). Leading white space before the value is ignored.

Name	Value
HTTP/1.1 200 OK
Date	Wed, 27 Sep 2017 20:51:00 GMT
Server	Apache
Last-Modified	Fri, 26 Aug 2016 05:45:22 GMT
Accept-Ranges	bytes
Content-Length	10813
Cache-Control	max-age=43200
Expires	Thu, 28 Sep 2017 08:51:00 GMT
Vary	Accept-Encoding,User-Agent
Content-Type	text/html
Connection	Keep-alive

HTML <head>

The <head> element is a container for metadata (data about data) and is placed between the <html> tag and the <body> tag.

HTML metadata is data about the HTML document. Metadata is not displayed.

Metadata typically define the document title, character set, styles, links, scripts, and other meta information.

The following tags describe metadata: <title>, <style>, <meta>, <link>, <script>, and <base>.

<title>

Title is missing.

<meta> description

Meta description is missing.

<meta> keywords

Meta keywords are missing.

<meta> other (1 records found)

Name	Value
Meta #1
equiv	Content-Type
content	text/html; charset=utf-8

<style>

<head> section doesn't contain any styles.

<link> (0 records found)

Name	Value

<script>

Internal

<head> contains 2 internal script sections. Total size: 10374 bytes.

External

Name	Value

<base>

<head> section doesn't contain a base section.