headers info

Domain name: stackoverflow dot com

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
Content-Type text/html; charset=utf-8
X-Frame-Options SAMEORIGIN
X-Request-Guid 147a36fc-f4e9-456e-bb15-fabd7b14254d
Strict-Transport-Security max-age=15552000
Content-Length 245120
Accept-Ranges bytes
Date Wed, 27 Sep 2017 16:56:29 GMT
Via 1.1 varnish
Connection keep-alive
X-Served-By cache-hhn1546-HHN
X-Cache MISS
X-Cache-Hits 0
X-Timer S1506531389.293916,VS0,VE98
Vary Fastly-SSL
X-DNS-Prefetch-Control off
Set-Cookie prov=e65e604d-ca90-c47b-80ff-f8352d99c5e2; domain=.stackoverflowcom; expires=Fri, 01-Jan-2055 00:00:00 GMT; path=/; HttpOnly
Cache-Control private

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 contains 9 words. 67 bytes.

<meta> description

Meta description contains 21 words. 154 bytes.

<meta> keywords

Meta keywords are missing.

<meta> other (7 records found)

Name Value
Meta #1
property og:type
content website
Meta #2
name twitter:card
content summary
Meta #3
name twitter:domain
content stackoverflowcom
Meta #4
property og:image
itemprop image primaryImageOfPage
content https://cdn.sstatic.net/Sites/stackoverflow/img/apple-touch-icon@2.png?v=73d79a89bded
Meta #5
name twitter:title
property og:title
itemprop title name
content Stack Overflow - Where Developers Learn, Share, & Build Careers
Meta #6
name twitter:description
property og:description
itemprop description
content Stack Overflow | The World’s Largest Online Community for Developers
Meta #7
property og:url
content https://stackoverflowcom/

<style>

<head> contains 1 <style> sections. Total size: 31 bytes.

<link> (5 records found)

<script>

Internal

<head> contains 2 internal script sections. Total size: 2961 bytes.

External

Name Value
Script #1
src https://ajax.googleapis.com/ajax/libs/jquery/1.12.4/jquery.min.js
Script #2
src https://cdn.sstatic.net/Js/stub.en.js?v=011fead3e70b

<base>

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

copy

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Error

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