Lens.org - SEO Checker

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Overview of the SEO Check
Meta information
100% 
Page quality
48% 
Page structure
100% 
Link structure
30% 
Server
85% 
External factors
100% 
SEO Score
Response time
2.51 s
File size
527.40 kB
Words
664
Media files
23
Number of links
46 internal / 13 external

Task list of SEO Improvements

Meta specifications

Title
(Critically important)
The Lens - Free & Open Patent and Scholarly Search
The length of the page title is perfect. (480 pixels out of 580 max pixel length)
There are no duplicate words in the title
Meta description
(Critically important)
The Lens serves all the patents and scholarly work in the world as a free, open and secure digital public good, with user privacy a paramount focus.
The length of the meta description is perfect. (907 pixels out of 1000 max pixel length)
Crawlability
(Critically important)
There are no problems in accessing the website.
Canonical URL
(Important)
No canonical link is specified.
Language
(Somewhat important)
Language detected in text: en
Language defined in HTML: en
Server location: United States of America
The following language is defined by HTML: en
Alternate/Hreflang Links
(Somewhat important)
There are no alternate links specified on this page.
Other meta tags
(Somewhat important)
There is no rel next meta tag on this page.
There is no rel prev meta tag on this page.
Domain
(Somewhat important)
The domain is no subdomain.
The domain length is good.
The domain does not contain non-latin characters.
Page URL
(Somewhat important)
No parameters were found in the URL.
No session ID was found in the URL.
The URL does not have too many subdirectories.
Charset encoding
(Somewhat important)
The charset encoding (UTF-8) is set correctly.
Doctype
(Nice to have)
The doctype HTML 5 is set correctly.
The doctype is placed at first in the HTML code.
Favicon
(Nice to have)
The favicon is linked correctly.

Meta tags

NameValue
viewportwidth=device-width, initial-scale=1.0, maximum-scale=1.0, user-scalable=no
HandheldFriendlytrue
apple-mobile-web-app-status-bar-styleblack
referrerno-referrer
descriptionThe Lens serves all the patents and scholarly work in the world as a free, open and secure digital public good, with user privacy a paramount focus.
langen
og:titleThe Lens - Free & Open Patent and Scholarly Search
og:imagehttps://static.lens.org/lens/9.2.2/img/og-logo.png
og:urlhttps://www.lens.org/lens
og:typewebsite
og:site_nameThe Lens - Free & Open Patent and Scholarly Search
og:descriptionThe Lens serves all the patents and scholarly work in the world as a free, open and secure digital public good, with user privacy a paramount focus.
X-UA-CompatibleIE=EmulateIE9
charsetutf-8

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Page quality

Content
(Critically important)
Some words from the page title are not used within the pages content
Words from the H1 heading are not used in the page content.
This page contains 664 words. That's ok.
26.1% of the text are stop words.
The page contains a listing, which indicates a good text layout.
11 paragraphs were found on this page.
No placeholders texts or images were found.
There are no duplicates on the site.
The average number of words per sentence of 18.68 words is good.
Frames
(Critically important)
This page does not use a frameset.
Mobile optimization
(Somewhat important)
No Apple touch icon is specified.
The file size of the HTML document is very large (527.4 kB).
A viewport "width=device-width, initial-scale=1.0, maximum-scale=1.0, user-scalable=no" is provided.
Bold and strong tags
(Somewhat important)
The usage of strong and bold tags is perfect. We recommend the use of up to 13 tags for this page.
Image SEO
(Somewhat important)
14 images have no alt attribute. The content of alt attributes is used by search engines.
Social Networks
(Nice to have)
There are only a few social sharing widgets on the page. Make your website popular in social networks with social sharing widgets.
Additional markup
(Nice to have)
No additional page markup was found.
HTTPS
(Somewhat important)
This website uses HTTPS to protect privacy and integrity of the exchanged data.
All included files are also transferred via HTTPS.

Media list

URLAlt attributeTitle
...9.2.2/img/home-page/features-patents.pngThe Lens
...9.2.2/img/home-page/features-scholar.pngThe Lens
...ens/9.2.2/img/home-page/features-api.pngThe Lens
.../9.2.2/img/home-page/features-patseq.pngThe Lens
...9.2.2/img/home-page/features-patcite.pngThe Lens
....2.2/img/home-page/features-profiles.pngThe Lens
...2/img/home-page/features-collections.pngThe Lens
...ns/9.2.2/img/home-page/features-in4m.pngThe Lens
...tic.lens.org/lens/9.2.2/img/flags/GB.pngNo alt attribute provided
...tic.lens.org/lens/9.2.2/img/flags/ES.pngNo alt attribute provided
...tic.lens.org/lens/9.2.2/img/flags/CN.pngNo alt attribute provided
...tic.lens.org/lens/9.2.2/img/flags/BR.pngNo alt attribute provided
...tic.lens.org/lens/9.2.2/img/flags/RU.pngNo alt attribute provided
...tic.lens.org/lens/9.2.2/img/flags/KR.pngNo alt attribute provided
...tic.lens.org/lens/9.2.2/img/flags/FR.pngNo alt attribute provided
...tic.lens.org/lens/9.2.2/img/flags/IT.pngNo alt attribute provided
...tic.lens.org/lens/9.2.2/img/flags/IN.pngNo alt attribute provided
...tic.lens.org/lens/9.2.2/img/flags/DE.pngNo alt attribute provided
...tic.lens.org/lens/9.2.2/img/flags/JP.pngNo alt attribute provided
...tic.lens.org/lens/9.2.2/img/flags/ID.pngNo alt attribute provided
...org/lens/9.2.2/img/flags/Arab_League.pngNo alt attribute provided
...tic.lens.org/lens/9.2.2/img/flags/IR.pngNo alt attribute provided
...ic.lens.org/lens/9.2.2/img/languages.jpgLanguage Improvements

Page structure

H1 heading
(Critically important)
Explore global science and technology knowledge
The H1 heading is perfect.
Headings
(Important)
The heading structure is perfect.

Heading structure

Heading levelContent
H1 Explore global science and technology knowledge
H2 Retiring Internet Explorer
H2 Bridging Cultures Start Your Search
H3 Sign in to the Lens
H3 Language Improvements
H4 Patents
H4 Scholarly Works
H4 API & Data
H4 PatSeq
H4 PatCite
H4 Lens Profiles
H4 Lens Reports
H4 In4M
Some internal links have dynamic parameters. All internal URLs, which are not marked as nofollow, should not contain dynamic parameters.
Some anchor texts are used more than once.
The number of internal links is ok.
None of the anchor texts is too long.
There are 13 external links on this page.

Found links on this page

LinkAttributesAnchor text
https://www.microsoft.com/en-a...New window External Subdomain Microsoft Edge
https://www.mozilla.org/en-US/...New window External Subdomain Firefox
https://www.google.com/chrome/New window External Subdomain Chrome
https://www.apple.com/au/safari/New window External Subdomain Safari
https://www.opera.com/New window External Subdomain Opera
https://www.lens.org/A-TITLE The Lens - Free & Open Patent and Scholarly Search
/lens/search/patent/structuredStart Using
/lens/search/patent/structuredPatents Search and Analysis
/lens/search/scholar/structuredText duplicate Start Using
/lens/search/scholar/structuredScholarly Works Search and Analysis
/lens/user/subscriptionsText duplicate Start Using
/lens/user/subscriptionsAPI & Data Bulk Data Access
https://www.lens.org/lens/bioText duplicate Start Using
https://www.lens.org/lens/bioPatSeq Biological Toolset
https://www.lens.org/lens/patciteText duplicate Start Using
https://www.lens.org/lens/patcitePatCite Citation Analysis
/lens/profilesText duplicate Start Using
/lens/profilesLens Profiles User Profiles
https://www.lens.org/lens/reportsText duplicate Start Using
https://www.lens.org/lens/reportsLens Reports Beta Report Builder
/lens/in4m/rankings/global/loc...Text duplicate Start Using
https://www.lens.org/lens/in4mIn4M Measuring Influence
https://about.lens.org/release...External Subdomain Release 9.2
/lens/accountsPricing
/lens/search/scholar/listFeature Tour
/lens/collective-actionCollective Action
/lens/institutionsInstitutional Toolkit
https://www.lens.org/lens/labsLens Labs
https://about.lens.org/what/External Subdomain What is the Lens
https://about.lens.org/categor...External Subdomain Release Notes
https://about.lens.org/lens-us...External Subdomain Lens Use Cases
https://about.lens.org/categor...External Subdomain Our News
https://about.lens.org/policies/External Subdomain Policies
https://support.lens.org/External Subdomain Support Center
https://docs.api.lens.org/New window External Subdomain API Documentation
https://www.lens.org/?locale=enEnglish - EN
https://www.lens.org/?locale=esEspañol - ES
https://www.lens.org/?locale=zh中文简体 - ZH
https://www.lens.org/?locale=ptPortuguês - PT
https://www.lens.org/?locale=ruРусский язык - RU
https://www.lens.org/?locale=kr한국어 - KR
https://www.lens.org/?locale=frFrançais - FR
https://www.lens.org/?locale=itItaliano - IT
https://www.lens.org/?locale=hiहिन्दी - HI
https://www.lens.org/?locale=deDeutsch - DE
https://www.lens.org/?locale=ja日本語 - JA
https://www.lens.org/?locale=inBahasa Indonesia - IN
https://www.lens.org/?locale=arالعَرَبِيَّة - AR
https://www.lens.org/?locale=faفارسی - FA
/lens/user/registrationRegister
/lens/user/loginLogin
/lens/landscapeSubdomain Climate Landscapes
/lens/search/patent/structuredShow More Options
/lens/search/scholar/listTake Tour
/lens/user/forgot-passwordForgot Password?
/lens/user/registrationRegister New Account
/lens/feedback?returnTo=/Help Us Translate
/lens/feedback?returnTo=/A-TITLE Give us feedback
/lens/feedback?returnTo=/Feedback

Server configuration

HTTP redirects
(Critically important)
This page redirects to "https://www.lens.org/"
HTTP header
(Important)
The web server version is sent within the HTTP header.
No X-Powered HTTP header is sent.
This page uses GZip for compressed data transmission.
Performance
(Somewhat important)
The page response time is very slow (2.51 seconds). The response time should be less than 0.4 seconds. Slow websites are bad for search engine bots and also result in bad user experience.
A Content Delivery Network like Google Hosted Libraries can save bandwidth for the JQuery files.
The file size of the HTML document is very large (527 kB).

HTTP Response Header

NameValue
dateSat, 31 Aug 2024 12:23:49 GMT
content-typetext/html;charset=UTF-8
servernginx/1.14.0 (Ubuntu)
varyAccept-Encoding
x-content-type-optionsnosniff
x-xss-protection1; mode=block
cache-controlno-cache, no-store, max-age=0, must-revalidate
pragmano-cache
expires0
set-cookie96 Characters
content-languageen-US
content-encodinggzip
statuscode200
http_versionHTTP/2

External factors

This page is referenced by wikipedia.
This website has excellent links from other websites.
This page has backlinks from 2,002 referring domains.
This page has 383,023 backlinks.
This page has backlinks from 1,475 different ip addresses.

Links from Wikipedia

You can find more links using Wikipedia search

Robots.txt

User-agent: Baiduspider
User-agent: YandexBot
User-agent: Amazonbot
User-agent: 360Spider
User-agent: Yisouspider
User-agent: PetalBot
User-agent: DataForSeoBot
User-agent: Applebot
User-agent: ClaudeBot
User-agent: GPTBot
User-agent: CCbot
User-agent: anthropic-ai
User-agent: Claude-Web
User-agent: Google-Extended
User-agent: BLEXBot
User-agent: AhrefsBot
User-agent: SemrushBot
User-agent: meta-externalagent
User-agent: facebookexternalhit
User-agent: dotbot
Disallow: /

User-agent: Bytespider
Disallow: /

User-agent: Sogou web spider
Disallow: /

User-agent: Sogou inst spider
Disallow: /

User-agent: *
Disallow: /lens/search/*facetData?
Disallow: /lens/search/*facetControls?
Disallow: /lens/search/*facets?
Disallow: /lens/patent/*/sequences
Disallow: /lens/export/
Disallow: /images/
Disallow: /lens/js/
Disallow: /lens/min/
Disallow: /lens/patcite

Similar sites

Search preview

www.lens.org
The Lens - Free & Open Patent and Scholarly Search
The Lens serves all the patents and scholarly work in the world as a free, open and secure digital public good, with user privacy a paramount focus.

Most important keywords

Following keywords were found. You can check the keyword optimization of this page for each keyword.

KeywordResultRecheck
Lens81%Check
Lens serves65%Check
Lens Profiles62%Check
Scholarly61%Check
Lens Reports61%Check
open58%Check
Scholarly Search56%Check
scholarly work55%Check
Patent Search55%Check
Explore54%Check
Show more keywords and terms

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