headers info

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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/1.1 301 Moved Permanently
HTTP/1.1 200 OK
Server Tengine
Date Wed, 27 Sep 2017 17:28:21 GMT
Content-Type text/html
Transfer-Encoding chunked
Connection keep-alive
Expires Wed, 27 Sep 2017 17:43:21 GMT
Cache-Control max-age=900

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 is missing.

<meta> description

Meta description is missing.

<meta> keywords

Meta keywords are missing.

<meta> other (1 records found)

Name Value
Meta #1
charset gb2312


<head> contains 1 <style> sections. Total size: 55247 bytes.

<link> (0 records found)



<head> contains 3 internal script sections. Total size: 3405 bytes.


Name Value


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


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