Lens.org - SEO Checker

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Overview of the SEO Check
Meta information
100% 
Page quality
61% 
Page structure
100% 
Link structure
27% 
Server
86% 
External factors
100% 
SEO Score
Response time
2.46 s
File size
516.70 kB
Words
669
Media files
23
Number of links
51 internal / 14 external

Task list of SEO Improvements

Meta specifications

Title
(Critically important)
The Lens - Patent and Scholarly Search and Analysis
The length of the page title is perfect. (476 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 an open and secure digital public good, with user privacy a paramount focus.
The length of the meta description is perfect. (881 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 an open and secure digital public good, with user privacy a paramount focus.
langen
og:titleThe Lens - Patent and Scholarly Search and Analysis
og:imagehttps://static.lens.org/lens/9.6.1/img/og-logo.png
og:urlhttps://www.lens.org/lens
og:typewebsite
og:site_nameThe Lens - Patent and Scholarly Search and Analysis
og:descriptionThe Lens serves all the patents and scholarly work in the world as an 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)
Words from the H1 heading are not used in the page content.
This page contains 669 words. That's ok.
26% of the text are stop words.
Keywords used in the page title are also used in the page content. That's good!
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 (516.7 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
...9.6.1/img/home-page/features-patents.pngThe Lens
...9.6.1/img/home-page/features-scholar.pngThe Lens
...ens/9.6.1/img/home-page/features-api.pngThe Lens
.../9.6.1/img/home-page/features-patseq.pngThe Lens
...9.6.1/img/home-page/features-patcite.pngThe Lens
....6.1/img/home-page/features-profiles.pngThe Lens
...1/img/home-page/features-collections.pngThe Lens
...ns/9.6.1/img/home-page/features-in4m.pngThe Lens
...tic.lens.org/lens/9.6.1/img/flags/GB.pngNo alt attribute provided
...tic.lens.org/lens/9.6.1/img/flags/ES.pngNo alt attribute provided
...tic.lens.org/lens/9.6.1/img/flags/CN.pngNo alt attribute provided
...tic.lens.org/lens/9.6.1/img/flags/BR.pngNo alt attribute provided
...tic.lens.org/lens/9.6.1/img/flags/RU.pngNo alt attribute provided
...tic.lens.org/lens/9.6.1/img/flags/KR.pngNo alt attribute provided
...tic.lens.org/lens/9.6.1/img/flags/FR.pngNo alt attribute provided
...tic.lens.org/lens/9.6.1/img/flags/IT.pngNo alt attribute provided
...tic.lens.org/lens/9.6.1/img/flags/IN.pngNo alt attribute provided
...tic.lens.org/lens/9.6.1/img/flags/DE.pngNo alt attribute provided
...tic.lens.org/lens/9.6.1/img/flags/JP.pngNo alt attribute provided
...tic.lens.org/lens/9.6.1/img/flags/ID.pngNo alt attribute provided
...org/lens/9.6.1/img/flags/Arab_League.pngNo alt attribute provided
...tic.lens.org/lens/9.6.1/img/flags/IR.pngNo alt attribute provided
...ic.lens.org/lens/9.6.1/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 14 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 - Patent and Scholarly Search and Analysis
/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/bioPatSeq Home
/lens/bio/patseqfinderFinder
/lens/bio/patseqdataData
/lens/bio/speciesText
/lens/bio/patseqexplorerExplorer
/lens/bio/patseqanalyzerAnalyzer
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 9.6
/lens/accountsPricing
/lens/search/patent/list?previ...Feature Tour
https://about.lens.org/what/External Subdomain What is the Lens
/lens/institutionsInstitutional Toolkit
https://about.lens.org/in4m-in...External Subdomain In4M: Influence Mapping
https://www.lens.org/lens/labsLens Labs
/lens/collective-actionCollective Action
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=idBahasa Indonesia - ID
https://www.lens.org/?locale=arالعَرَبِيَّة - AR
https://www.lens.org/?locale=faفارسی - IR
/lens/user/registrationRegister
/lens/user/loginSign in
/lens/landscapeSubdomain Climate Landscapes
/lens/search/patent/structuredShow More Options
/lens/search/patent/listTake Tour
/lens/user/forgot-passwordForgot Password?
/lens/user/registrationCreate 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.
The web server transmits the web page (HTML) in compressed form.
Performance
(Somewhat important)
The page response time is very slow (2.46 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 (517 kB).

HTTP Response Header

NameValue
dateMon, 26 May 2025 21:47:47 GMT
content-typetext/html;charset=UTF-8
servernginx/1.14.0 (Ubuntu)
varyAccept-Encoding
cache-controlno-store
content-security-policyframe-ancestors 'self'
x-content-type-optionsnosniff
x-xss-protection1; mode=block
set-cookie114 Characters
content-languageen-US
strict-transport-securitymax-age=31536000; includeSubDomains
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 752 referring domains.
This page has 57,010 backlinks.
This page has backlinks from 674 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
User-agent: AwarioRssBot
User-agent: AwarioSmartBot
User-agent: ChatGPT-User
User-agent: OAI-SearchBot
User-agent: YisouSpider
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

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Search preview

www.lens.org
The Lens - Patent and Scholarly Search and Analysis
The Lens serves all the patents and scholarly work in the world as an 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
Scholarly62%Check
Lens Profiles62%Check
Lens Reports61%Check
Patent Search57%Check
scholarly work56%Check
Scholarly Search56%Check
Explore54%Check
Patents52%Check
Show more keywords and terms

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