Domain name: duolingo 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
Server	nginx/1.4.6 (Ubuntu)
Date	Wed, 27 Sep 2017 20:49:39 GMT
Content-Type	text/html
Content-Length	193
Connection	keep-alive
Location	https://www.duolingocom

HTTP/1.1 200 OK
Cache-control	no-cache="set-cookie"
Content-Type	text/html; charset=UTF-8
Date	Wed, 27 Sep 2017 20:49:40 GMT
Expires	-1
Pragma	no-cache
Server	nginx/1.4.6 (Ubuntu)
Set-Cookie	lang=en; Domain=.duolingocom; Max-Age=31536000; Path=/; expires=Thu, 27-Sep-2018 20:49:40 GMT
Set-Cookie	duo_ab=9494bcbd8169c0dd5c8119cc17ea62055f9fd534eyJsb2dpbl9tb2RhbF9leHBlcmltZW50IjogdHJ1ZX0=; Domain=.duolingocom; Max-Age=31536000; Path=/; expires=Thu, 27-Sep-2018 20:49:40 GMT
Set-Cookie	wuuid=16d53d7e-6dab-40da-a068-53210a989319
Set-Cookie	AWSELB=91E12D7D1E1B37CA82C3043817CF6AE0B5D25E6E40CB3C4052ED88BFB5917FE57DE8AD253EACF898F13663A3DE51F66675F00B028CB5F401684F98C2E69E62DB7B301FCFC4;PATH=/;MAX-AGE=7200
X-IPCountry	DE
X-RUNTIME	0.08760
X-TID	03d549cb59cc0e3d0183
X-WS	10.0.3.213
Content-Length	60815
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>

Duolingo: Learn Spanish, French and other languages for free

<meta> description

Duolingo is the world

<meta> keywords

learn, spanish, german, french, portuguese, italian, english, free, lessons, course, language, study, flashcards

<meta> other (19 records found)

Name	Value
Meta #1
equiv	Content-Type
content	text/html; charset=utf-8
Meta #2
equiv	refresh
content	0; url=/nojs/splash
Meta #3
name	viewport
content	width=device-width, initial-scale=1.0

Meta #4
name	robots
content	NOODP
Meta #5
property	fb:app_id
content	234536436609303
Meta #6
property	og:type
content	website
Meta #7
property	og:url
content	https://www.duolingocom/
Meta #8
property	og:image
content	https://www.duolingocom/images/facebook/duo200.png
Meta #9
property	og:site_name
content	Duolingo
Meta #10
property	og:title
content	Learn a language for free
Meta #11
property	og:description
content	Learn languages by playing a game. It
Meta #12
name	google-site-verification
content	nWyTCDRw4VJS_b6YSRZiFmmj56EawZpZMhHtKXt7lkU
Meta #13
name	yandex-verification
content	695573447ba029c6
Meta #14
name	apple-itunes-app
content	app-id=570060128
Meta #15
name	twitter:card
content	summary
Meta #16
name	twitter:site
content	@duolingo
Meta #17
name	twitter:title
content	Duolingo - Learn a language for free @duolingo
Meta #18
name	twitter:description
content	Learn languages by playing a game. It
Meta #19
name	twitter:image
content	https://www.duolingocom/images/facebook/duo200.png

<style>

<head> section doesn't contain any styles.

<link> (30 records found)

Name	Value
Link #1
rel	chrome-webstore-item
href	https://chrome.google.com/webstore/detail/aiahmijlpehemcpleichkcokhegllfjl
Link #2
rel	alternate
hreflang	ar
href	https://ar.duolingocom/
Link #3
rel	alternate
hreflang	cs
href	https://cs.duolingocom/
Link #4
rel	alternate
hreflang	de
href	https://de.duolingocom/
Link #5
rel	alternate
hreflang	el
href	https://el.duolingocom/

Link #6
rel	alternate
hreflang	en
href	https://www.duolingocom/
Link #7
rel	alternate
hreflang	es
href	https://es.duolingocom/
Link #8
rel	alternate
hreflang	fr
href	https://fr.duolingocom/
Link #9
rel	alternate
hreflang	hi
href	https://hi.duolingocom/
Link #10
rel	alternate
hreflang	hu
href	https://hu.duolingocom/
Link #11
rel	alternate
hreflang	id
href	https://id.duolingocom/
Link #12
rel	alternate
hreflang	it
href	https://it.duolingocom/
Link #13
rel	alternate
hreflang	ja
href	https://ja.duolingocom/
Link #14
rel	alternate
hreflang	ko
href	https://ko.duolingocom/
Link #15
rel	alternate
hreflang	nl
href	https://nl-nl.duolingocom/
Link #16
rel	alternate
hreflang	pl
href	https://pl.duolingocom/
Link #17
rel	alternate
hreflang	pt
href	https://pt.duolingocom/
Link #18
rel	alternate
hreflang	ro
href	https://ro.duolingocom/
Link #19
rel	alternate
hreflang	ru
href	https://ru.duolingocom/
Link #20
rel	alternate
hreflang	th
href	https://th.duolingocom/
Link #21
rel	alternate
hreflang	tr
href	https://tr.duolingocom/
Link #22
rel	alternate
hreflang	uk
href	https://uk.duolingocom/
Link #23
rel	alternate
hreflang	vi
href	https://vi.duolingocom/
Link #24
rel	alternate
hreflang	x-default
href	https://www.duolingocom/
Link #25
rel	alternate
hreflang	zh
href	http://www.duolingo.cn/
Link #26
rel	canonical
href	https://www.duolingocom/
id	canonical
Link #27
rel	stylesheet
href	//d7mj4aqfscim2.cloudfront.net/proxy/css2/73ce9b383a6739da14bd898e86e2e4dc_mv_73ce9b383a6739da14bd898e86e2e4dc_0.min.css
Link #28
rel	stylesheet
href	//d7mj4aqfscim2.cloudfront.net/proxy/css2/73ce9b383a6739da14bd898e86e2e4dc_mv_73ce9b383a6739da14bd898e86e2e4dc_1.min.css
Link #29
rel	stylesheet
href	//d7mj4aqfscim2.cloudfront.net/proxy/css2/73ce9b383a6739da14bd898e86e2e4dc_mv_73ce9b383a6739da14bd898e86e2e4dc_2.min.css
Link #30
href	/images/favicon.ico?v=3
rel	shortcut icon
type	image/x-icon

<script>

Internal

<head> contains 2 internal script sections. Total size: 1740 bytes.

External

Name	Value

<base>

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