Indoor.lbl.gov - SEO Checker

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Overview of the SEO Check
Meta information
75% 
Page quality
57% 
Page structure
43% 
Link structure
92% 
Server
83% 
External factors
100% 
SEO Score
Response time
0.24 s
File size
36.70 kB
Words
462
Media files
14
Number of links
32 internal / 19 external

Task list of SEO Improvements

Meta specifications

Title
(Critically important)
Home | Indoor Environment
The length of the page title is perfect. (248 pixels out of 580 max pixel length)
There are no duplicate words in the title
Meta description
(Critically important)
The meta description is missing.
Crawlability
(Critically important)
There are no problems in accessing the website.
Canonical URL
(Important)
https://indoor.lbl.gov/home
The specified canonical link points to a different page.
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
GeneratorDrupal 10 (https://www.drupal.org)
MobileOptimizedwidth
HandheldFriendlytrue
viewportwidth=device-width, initial-scale=1.0
langen
charsetutf-8

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Page quality

Content
(Critically important)
There are only 462 words on this page. Good pages should have about 800 words of useful content.
27.3% of the text are stop words.
The page contains a listing, which indicates a good text layout.
4 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 17.71 words is good.
Frames
(Critically important)
This page does not use a frameset.
Mobile optimization
(Somewhat important)
No Apple touch icon is specified.
This page loads 8 JavaScript files. This may affect the load time negatively.
A viewport "width=device-width, initial-scale=1.0" is provided.
Bold and strong tags
(Somewhat important)
The usage of strong and bold tags is perfect. We recommend the use of up to 9 tags for this page.
Image SEO
(Somewhat important)
10 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
...es/IndoorEnv_2022_footer_1-line_Blue.pngHome
data:[...] Base64Home.jpg
data:[...] Base64group-2.jpg
...em_images/homes-square.jpg?itok=Gc3VHoMGNo alt attribute provided
...ercial-building-square.jpg?itok=n4DZC2a1No alt attribute provided
...images/health-square_0.jpg?itok=a_4l0f5INo alt attribute provided
...r_000014669611_Large-1.jpg?itok=f28CH0zPNo alt attribute provided
...id_item_images/randy_0.jpg?itok=fhNkk-nBNo alt attribute provided
..._000034018612_XXXLarge.jpg?itok=7GSPwAm0No alt attribute provided
...air-quality-sensor-3_0.jpg?itok=ZhWel0dMNo alt attribute provided
...ages/chem-bio-square_0.jpg?itok=kQw_kWjFNo alt attribute provided
...s/developing-countries.jpg?itok=NpPjjFZdNo alt attribute provided
...c/aerial-plume-release.jpg?itok=YsoaWBzzStay in Touch — Sign Up for Our Newsletter
...s/ETA_2022_WEB-Footer3-line_White-01.pngNo alt attribute provided

Page structure

H1 heading
(Critically important)
Home
The H1 heading contains the words Home! Use important keywords instead.
The H1 heading consists of only one word. There should be more information given.
The H1 heading is too short (4 characters). It should be at least 20 Characters long.
Headings
(Important)
The heading structure is perfect.

Heading structure

Heading levelContent
H1 Home
H2 Clean Air in the Built Environment
H2 Our Research Team
H2 Air Quality Tips and Resources During a Wildfire
H2 Our Research
H2 Commercial Kitchen Indoor Environmental Quality Field Study
H2 Renew America's Schools IEQ Survey
H2 OUR ORGANIZATION
H3 The Indoor Environment Group has put together a number of tips and resources to assist with dealing with bad air quality, during a wildfire or other event.
H3 Homes
H3 Commercial Buildings
H3 Health and Productivity
H3 Ventilation & Air Cleaning
H3 Pollutant Sources and Exposures
H3 Smoking and Vaping
H3 Air Quality Sensors
H3 Chem-Bio Preparedness
H3 Cookstoves
Some anchor texts are used more than once.
The number of internal links is ok.
None of the anchor texts is too long.
All internal links are not using dynamic parameters.
There are 19 external links on this page.

Found links on this page

LinkAttributesAnchor text
https://indoor.lbl.gov/Anchor Skip to main content
http://lbl.gov/New window External Berkeley Lab
http://eta.lbl.gov/New window External Subdomain Energy Technologies Area
https://energyanalysis.lbl.gov/New window External Subdomain Energy Analysis & Environmental Impacts
https://indoor.lbl.gov/IMG-ALT Home
A-TITLE Home
https://indoor.lbl.gov/about-usAbout Us
https://indoor.lbl.gov/newsNews
https://indoor.lbl.gov/researchResearch
https://indoor.lbl.gov/homesHomes
/air-quality-tipsAir Quality Tips
/commercial-buildingsCommercial Buildings
/health-and-productivityHealth and Productivity
/ventilation-and-air-cleaningVentilation & Air Cleaning
/pollutant-sources-and-exposuresPollutant Sources and Exposures
/smoking-and-vapingSmoking and Vaping
/air-quality-sensorsAir Quality Sensors
/chem-bio-preparednessChem-Bio Preparedness
https://indoor.lbl.gov/cookstovesCookstoves
/capabilities-toolsCapabilities & Tools
https://indoor.lbl.gov/peoplePeople
/publicationsPublications
/presentationsPresentations
/news/air-quality-tips-and-res...New window Subdomain indoor.lbl.gov/news/air-quality-tips-and-resources
https://frontierenergy.com/com...New window External Frontier Energy's Food Service Technology Center
https://cbe.berkeley.edu/New window External Subdomain University of California at Berkeley's Center for the Built Environment
/kitchen-studyNew window Subdomain commercial kitchen study page
/sites/default/files/2024-04/I...New window Subdomain Find out more
https://indoor.lbl.gov/homesText duplicate Homes
/commercial-buildingsText duplicate Commercial Buildings
/health-and-productivityText duplicate Health and Productivity
/ventilation-and-air-cleaningText duplicate Ventilation & Air Cleaning
/pollutant-sources-and-exposuresText duplicate Pollutant Sources and Exposures
/smoking-and-vapingText duplicate Smoking and Vaping
/air-quality-sensorsText duplicate Air Quality Sensors
/chem-bio-preparednessText duplicate Chem-Bio Preparedness
https://indoor.lbl.gov/cookstovesText duplicate Cookstoves
https://indoor.lbl.gov/joinSubdomain indoor.lbl.gov/join
https://www.facebook.com/energ...New window External Subdomain No Text
https://twitter.com/BerkeleyLa...New window External No Text
http://lbl.gov/New window External Lawrence Berkeley National Laboratory
http://eta.lbl.gov/New window External Subdomain Text duplicate Energy Technologies Area
http://www.lbl.gov/disclaimers/New window External Subdomain Privacy and Security Notice
https://energyanalysis.lbl.gov/New window External Subdomain Text duplicate Energy Analysis & Environmental Impacts
https://www.lbl.gov/New window External Subdomain Text duplicate Lawrence Berkeley National Laboratory
https://twitter.com/BerkeleyLabNew window External twitter
https://instagram.com/berkeleylabNew window External instagram
https://www.linkedin.com/compa...New window External Subdomain LinkedIn
https://www.facebook.com/Berke...New window External Subdomain facebook
https://www.youtube.com/user/B...New window External Subdomain youtube
https://www.lbl.gov/web-support/New window External Subdomain Questions & Comments
https://www.lbl.gov/disclaimers/New window External Subdomain Privacy & Security Notice

Server configuration

HTTP redirects
(Critically important)
This page redirects to "https://indoor.lbl.gov/"
HTTP header
(Important)
No X-Powered HTTP header is sent.
This page uses GZip for compressed data transmission.
Performance
(Somewhat important)
This page loads 5 CSS files. This may affect the page load time negatively.
This page loads 8 JavaScript files. This may affect the load time negatively.
The page response time is excellent with 0.24 seconds.
The file size of the HTML document is fine (37 kB).

HTTP Response Header

NameValue
dateSun, 04 Aug 2024 05:23:04 GMT
content-typetext/html; charset=UTF-8
transfer-encodingchunked
connectionkeep-alive
cache-controlmax-age=3600, public
content-languageen
expiresSun, 19 Nov 1978 05:00:00 GMT
last-modifiedSat, 03 Aug 2024 23:17:18 GMT
strict-transport-securitymax-age=31536000
x-content-type-optionsnosniff
x-drupal-cacheMISS
x-drupal-dynamic-cacheMISS
x-frame-optionsSAMEORIGIN
x-generatorDrupal 10 (https://www.drupal.org)
x-pantheon-styx-hostnamestyx-fe2-a-5b79f48dbd-l7fxt
x-styx-req-id870c9021-51ee-11ef-8eaa-ae9b3e8f133c
x-served-bycache-chi-klot8100040-CHI, cache-fra-eddf8230067-FRA
x-cacheHIT, HIT
x-cache-hits4, 0
x-timerS1722748985.860016,VS0,VE111
varyAccept-Encoding, Cookie, Cookie, Cookie
age2870
via1.1 varnish, 1.1 varnish
cf-cache-statusDYNAMIC
servercloudflare
cf-ray8adc1d030eda9f48-FRA
content-encodinggzip
statuscode200
http_versionHTTP/1.1

External factors

Blacklists
(Nice to have)
This website is not classified "for adult only".
This website has excellent links from other websites.
This page has backlinks from 657 referring domains.
This page has 1,527 backlinks.
This page has backlinks from 471 different ip addresses.
Facebook popularity
(Somewhat important)
The page has 0 shares and comments on Facebook.

Links from Wikipedia

No links from Wikipedia were found.

Robots.txt

#
# robots.txt
#
# This file is to prevent the crawling and indexing of certain parts
# of your site by web crawlers and spiders run by sites like Yahoo!
# and Google. By telling these "robots" where not to go on your site,
# you save bandwidth and server resources.
#
# This file will be ignored unless it is at the root of your host:
# Used:    http://example.com/robots.txt
# Ignored: http://example.com/site/robots.txt
#
# For more information about the robots.txt standard, see:
# http://www.robotstxt.org/robotstxt.html

User-agent: *
# CSS, JS, Images
Allow: /core/*.css$
Allow: /core/*.css?
Allow: /core/*.js$
Allow: /core/*.js?
Allow: /core/*.gif
Allow: /core/*.jpg
Allow: /core/*.jpeg
Allow: /core/*.png
Allow: /core/*.svg
Allow: /profiles/*.css$
Allow: /profiles/*.css?
Allow: /profiles/*.js$
Allow: /profiles/*.js?
Allow: /profiles/*.gif
Allow: /profiles/*.jpg
Allow: /profiles/*.jpeg
Allow: /profiles/*.png
Allow: /profiles/*.svg
# Directories
Disallow: /core/
Disallow: /profiles/
# Files
Disallow: /README.txt
Disallow: /web.config
# Paths (clean URLs)
Disallow: /admin/
Disallow: /comment/reply/
Disallow: /filter/tips
Disallow: /node/add/
Disallow: /search/
Disallow: /user/register
Disallow: /user/password
Disallow: /user/login
Disallow: /user/logout
# Paths (no clean URLs)
Disallow: /index.php/admin/
Disallow: /index.php/comment/reply/
Disallow: /index.php/filter/tips
Disallow: /index.php/node/add/
Disallow: /index.php/search/
Disallow: /index.php/user/password
Disallow: /index.php/user/register
Disallow: /index.php/user/login
Disallow: /index.php/user/logout
# Limit how fast requests are made against the site.
Crawl-delay: 90

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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
Indoor68%Check
Indoor Environment61%Check
Indoor Air56%Check
Environment54%Check
Indoor Air Quality52%Check
Built Environment48%Check
lbl48%Check
gov48%Check
Air44%Check
Quality44%Check
Show more keywords and terms

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