Query.libretexts.org - SEO Checker

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Overview of the SEO Check
Meta information
69% 
Page quality
94% 
Page structure
75% 
Link structure
86% 
Server
86% 
External factors
30% 
SEO Score
Response time
1.02 s
File size
102.90 kB
Words
637
Media files
9
Number of links
20 internal / 6 external

Task list of SEO Improvements

Meta specifications

Title
(Critically important)
Welcome to the Larsen Lab - Global
The title contains the word Welcome to! More content should be covered in the title.
There are no duplicate words in the title
Meta description
(Critically important)
The meta description is empty.
Crawlability
(Critically important)
There are no problems in accessing the website.
Canonical URL
(Important)
https://query.libretexts.org/
There is a valid canonical link specified.
Language
(Somewhat important)
Language detected in text: en
Language defined in HTML: en
Server location: Germany
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)
This page is hosted on a subdomain. Use a top level domain for better SEO results.
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
generatorMindTouch
robotsindex,follow
descriptionEmpty
article:published_time2013-12-16T18:35:06Z
article:modified_time2024-04-16T02:30:10Z
langen
twitter:cardsummary
twitter:titleWelcome to the Larsen Lab
twitter:descriptionEmpty
twitter:imagehttps://a.mtstatic.com/@public/production/site_4538/1579208299-social-share.png
og:titleWelcome to the Larsen Lab
og:site_nameGlobal
og:typearticle
og:localeen_US
og:urlhttps://query.libretexts.org
og:imagehttps://a.mtstatic.com/@public/production/site_4538/1579208299-social-share.png
og:descriptionEmpty

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Page quality

Content
(Critically important)
These Typos were found:
  • portugues => Portuguese
This page contains 637 words. That's ok.
13.3% 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.
4 paragraphs were found on this page.
The text content is perfect.
No placeholders texts or images were found.
There are no duplicates on the site.
The average number of words per sentence of 9.91 words is good.
Frames
(Critically important)
This page does not use a frameset.
Mobile optimization
(Somewhat important)
A viewport "width=device-width, initial-scale=1" is provided.
At least one Apple touch icon is specified.
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)
Alt text (alternative text) is correctly used on all found images.
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
cdn.libretexts.net/Logos/query_full.pngLibrary homepage
...cdn.libretexts.net/Logos/global_full.pngLibrary homepage
...production/site_4538/1579208391-logo.pngGlobal
...09/mindtouch.page%23thumbnail?revision=3mindtouch.page#thumbnail
...13/mindtouch.page%23thumbnail?revision=2mindtouch.page#thumbnail
...08/mindtouch.page%23thumbnail?revision=3mindtouch.page#thumbnail
...10/mindtouch.page%23thumbnail?revision=2mindtouch.page#thumbnail
...11/mindtouch.page%23thumbnail?revision=2mindtouch.page#thumbnail
...12/mindtouch.page%23thumbnail?revision=2mindtouch.page#thumbnail

Page structure

H1 heading
(Critically important)
There is no H1 heading specified.
Headings
(Important)
The structure of headings is missing one or more levels. Do not skip heading levels.
Some headings do not have any content.

Heading structure

Heading levelContent
H2 Empty heading
H2 Error
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 6 external links on this page.

Found links on this page

LinkAttributesAnchor text
https://query.libretexts.org/Anchor Skip to main content
A-TITLE Press enter to skip to the main content
https://query.libretexts.org/Subdomain IMG-ALT Library homepage
/Under_Construction/Instructor...Subdomain school Campus Bookshelves
/Special:Userlogin?readerViewSubdomain Anchor login Login
https://register.libretexts.org/New window Nofollow External Subdomain how_to_reg Request Instructor Account
https://commons.libretexts.org/New window Nofollow External Subdomain hub Instructor Commons
https://query.libretexts.org/Subdomain Text duplicate IMG-ALT Library homepage
/Special:UserLogin?returntotitleSubdomain Sign in
A-TITLE Sign in
https://query.libretexts.org/Subdomain IMG-ALT Global
A-TITLE Global
/Special:UserLogin?returntotitleSubdomain Text duplicate Sign in
A-TITLE Sign in
/Special:UserPasswordSubdomain Forgot password
A-TITLE Retrieve lost password
https://query.libretexts.org/Subdomain No Text
/FrancaisSubdomain Français
IMG-ALT mindtouch.page#thumbnail
A-TITLE Français
/Idioma_PortuguesSubdomain Idioma Portugues
IMG-ALT mindtouch.page#thumbnail
A-TITLE Idioma Portugues
/KiswahiliSubdomain Kiswahili
IMG-ALT mindtouch.page#thumbnail
A-TITLE Kiswahili
/اللغة_العربيةSubdomain اللغة العربية
IMG-ALT mindtouch.page#thumbnail
A-TITLE اللغة العربية
/हिन्दी_भाषाSubdomain हिन्दी भाषा
IMG-ALT mindtouch.page#thumbnail
A-TITLE हिन्दी भाषा
https://query.libretexts.org/简体中文Subdomain 简体中文
IMG-ALT mindtouch.page#thumbnail
A-TITLE 简体中文
/MagyarSubdomain No image availableMagyar
A-TITLE Magyar
/עבריתSubdomain No image availableעברית
A-TITLE עברית
/فارسیSubdomain No image availableفارسی
A-TITLE فارسی
/ΕλληνικάSubdomain No image availableΕλληνικά
A-TITLE Ελληνικά
https://mindtouch.com/demoNew window External Powered by CXone Expert ®
A-TITLE MindTouch
https://www.nice.com/resources...New window Nofollow External Subdomain Powered by NICE CXone Expert
https://libretexts.org/legal/i...New window Nofollow External Legal
https://commons.libretexts.org...New window Nofollow External Subdomain Accessibility Statement

Server configuration

HTTP redirects
(Critically important)
This page redirects to "https://query.libretexts.org/"
HTTP header
(Important)
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 slow (1.02 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.
The file size of the HTML document is fine (103 kB).

HTTP Response Header

NameValue
content-typetext/html; charset=utf-8
content-length22476
dateFri, 23 May 2025 10:24:54 GMT
content-encodingbr
content-languageen-US
x-xss-protection1; mode=block
content-security-policyupgrade-insecure-requests; default-src https: data: filesystem: blob: mediastream: 'unsafe-inline' 'unsafe-eval'; connect-src https: wss:
expires-1
cache-controlno-cache, no-store, must-revalidate, max-age=0
varyAccept-Encoding,Cookie
x-content-type-optionsnosniff
x-deki-siteid=site_4538
set-cookie86 Characters
strict-transport-securitymax-age=31536000; includeSubDomains
x-cacheMiss from cloudfront
via1.1 503c2bd0b7e26f747c58a5188346ef54.cloudfront.net (CloudFront)
x-amz-cf-popFRA60-P10
alt-svch3=":443"; ma=86400
x-amz-cf-idp_-nVVUEGJ5cClfHL18Td_dL3jO811ohqoyImk4nZX_y2zArPhbZDg==
statuscode200
http_versionHTTP/2

External factors

This page has only a few links from other websites.
This page only has backlinks from 10 referring domains.
This page only has 13 backlinks.
This page only has few backlinks from 9 different ip addresses.

Links from Wikipedia

No links from Wikipedia were found.

Robots.txt

User-Agent: *
Crawl-delay: 5
Sitemap: https://query.libretexts.org/sitemap.xml
Request-rate: 1/5

# allow file attachments
Allow: /@api/deki/files/

# allow GSA authentication
Allow: /@api/deki/users/authenticate
Allow: /Special:UserLogin
Allow: /*title=Special:UserLogin
Allow: /@app/auth/
Allow: /@app/saml/

# block operational (non content) locations
Disallow: /Special:*
Disallow: /*title=Special:*
Disallow: /Template:*
Disallow: /*title=Template:*
Disallow: /User:*
Disallow: /*title=User:*
Disallow: /deki/
Disallow: /*action=*
Disallow: /@*

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Search preview

Most important keywords

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

KeywordResultRecheck
global50%Check
libretexts48%Check
org48%Check
Welcome46%Check
Larsen46%Check
Lab46%Check
Larsen Lab46%Check
LibreTexts libraries41%Check
Expand collapse global39%Check
Error38%Check
Show more keywords and terms

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