Psl.noaa.gov - SEO Checker

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Overview of the SEO Check
Meta information
88% 
Page quality
68% 
Page structure
29% 
Link structure
87% 
Server
0% 
External factors
100% 
SEO Score
Response time
1.29 s
File size
45.50 kB
Words
438
Media files
14
Number of links
83 internal / 14 external

Task list of SEO Improvements

Meta specifications

Title
(Critically important)
Home: NOAA Physical Sciences Laboratory
The length of the page title is perfect. (390 pixels out of 580 max pixel length)
There are no duplicate words in the title
Meta description
(Critically important)
US Department of Commerce, NOAA, Physical Sciences Laboratory
The length of the meta description is perfect. (420 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)
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)
HTTP-Header Content-Type: utf-8
Meta Charset Attribut: utf-8
Meta Charset Attribut: iso-8859-1
The specified character encodings are different.
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
descriptionUS Department of Commerce, NOAA, Physical Sciences Laboratory
authorPSL Web Team
keywordsPhysical Sciences Laboratory, NOAA, ESRL, weather, water, climate, extremes, research, modeling, observations
langen
X-UA-CompatibleIE=edge
refresh86400
charsetutf-8

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Page quality

Content
(Critically important)
There are only 438 words on this page. Good pages should have about 800 words of useful content.
21% of the text are stop words.
Keywords used in the page title are also used in the page content. That's good!
Words from the H1 heading are used in the page content.
The page contains a listing, which indicates a good text layout.
6 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 12.64 words is good.
Frames
(Critically important)
This page does not use a frameset.
Mobile optimization
(Somewhat important)
No Apple touch icon is specified.
A viewport "width=device-width, initial-scale=1" 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)
3 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
/img/icons/us_flag_small.pngNo alt attribute provided
/img/icons/icon-dot-gov.svgNo alt attribute provided
/img/icons/icon-https.svgNo alt attribute provided
/img/logos/noaa-logo.svgNOAA Logo
/img/logos/noaa-logo.svgNOAA Logo
.../news/2026/img/downpour_as_280825264.jpgHeavy rain hits the ground and splashes. Adobe Stock | New Africa
...2026/img/nepmhw_adobestock_236122432.jpgOpen ocean with the sun beaming down and reflecting on choppy waves | Licensed from Adobe Stocklink to webpage
.../usfs_siuslaworegon_rxburn_2022_news.jpgDry vegetation burning in a prescribed burn as a firefighter monitors the spread | Photo: U.S. Forest Servicelink to page
...s/2026/img/usgs_bigthompson_btc00029.pngA destroyed house hangs off a mangled bridge over the Big Thompson River in Colorado with pine trees and mountains surrounding and debris littering the landscape. Photo: USGS
https://psl.noaa.gov/img/home/research.pngresearch
https://psl.noaa.gov/img/home/exp-prod.pngexperimental products
https://psl.noaa.gov/img/home/data.pngdata
https://psl.noaa.gov/img/home/teams.pngdata
Video URLWidthHeight
/psl/img/themes/pslmontage.mp4

Page structure

H1 heading
(Critically important)
Physical Sciences Laboratory
Too many H1 headings
Headings
(Important)
Some headings occur twice on the page.
The structure of headings is missing one or more levels. Do not skip heading levels.

Heading structure

Heading levelContent
H1 Physical Sciences Laboratory
H1 Recent
H1 Explore
H3 Research
H3 Experimental Products
H3 Data Access and Tools
H3 Divisions
H4 Research Duplicate text
H4 Experimental Products Duplicate text
H4 Data Access and Tools Duplicate text
H4 Divisions Duplicate text
H4 Mailing Address
H4 External Links
H4 Physical Sciences Laboratory Duplicate text
H4 More
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 14 external links on this page.

Found links on this page

LinkAttributesAnchor text
https://www.noaa.gov/External Subdomain IMG-ALT NOAA Logo
A-TITLE Link to NOAA
http://www.noaa.gov/External Subdomain Text duplicate IMG-ALT NOAA Logo
A-TITLE Link to NOAA
https://psl.noaa.gov/Physical Sciences Laboratory
A-TITLE PSL
https://psl.noaa.gov/about/About Us
/about/org.htmlOrganization At-A-Glance
/research/divisions/Research Divisions
https://psl.noaa.gov/reviews/Science Reviews
https://www.boulder.noaa.gov/o...External Subdomain Visiting NOAA Boulder
/about/opportunities/Opportunities
/about/contacts.htmlContact Us
/staff/index.htmlStaff List
https://psl.noaa.gov/research/Overview
/research/divisions/Text duplicate Research Divisions
https://psl.noaa.gov/pubs/Publications
https://psl.noaa.gov/assessments/Assessments
https://research.noaa.gov/scie...New window External Subdomain NOAA Research Priorities
/arportal/index.htmlAtmospheric River Portal
https://psl.noaa.gov/drought/Drought
https://psl.noaa.gov/enso/El Niño and La Niña
/fire_weather/Fire Weather
https://psl.noaa.gov/mjo/Madden-Julian Oscilation (MJO)
/marine-heatwaves/Marine Heatwaves
https://psl.noaa.gov/precip/pmp/Probable Maximum Precipitation
https://psl.noaa.gov/ufs/Unified Forecast System
https://psl.noaa.gov/aqpi/AQPI
A-TITLE Advanced Quantitative Precipitation Information
https://psl.noaa.gov/atomic/ATOMIC
A-TITLE Atlantic Tradewind Ocean-Atmosphere Mesoscale Interaction Campaign
/enso/rapid_response/ENRR
A-TITLE El Niño Rapid Response Field Campaign
https://psl.noaa.gov/mosaic/MOSAiC
A-TITLE Multidisciplinary Drifting Observatory for the Study of Arctic Climate
https://psl.noaa.gov/splash/SPLASH
A-TITLE Study of Precipitation, the Lower Atmosphere and Surface for Hydrometeorology
/renewable_energy/wfip3/WFIP3
A-TITLE 3rd Wind Forecast Improvement Project
/arctic/observatories/Arctic Climate
/psd3/air-sea/oceanobs/Shipboard
https://psl.noaa.gov/technology/Technology
/data/index.htmlAll
/data/gridded/index.htmlGridded Climate
https://psl.noaa.gov/data/obs/PSL Observation Network
/data/cruises/Research Cruises
https://psl.noaa.gov/arctic/data/Arctic
/psd2/coastal/satres/Satellite
https://psl.noaa.gov/boulder/Boulder Climate & Weather
/data/getpage/Plotting & Analysis Tools
/data/notices/Data Notices
https://psl.noaa.gov/data/help/Help
https://psl.noaa.gov/products/Text duplicate All
/products/monitor/Monitoring
https://psl.noaa.gov/forecasts/Forecasts
https://psl.noaa.gov/map/Map Room
https://psl.noaa.gov/data/getpageText duplicate Plotting & Analysis Tools
/data/20thC_Rean/20th Century Reanalysis
A-TITLE The 20th Century Reanalysis Project
https://psl.noaa.gov/data/writ/WRIT
A-TITLE <strong>W</strong>eb-based <strong>R</strong>eanalyses <strong>I</strong>ntercomparison <strong>T</strong>ools
https://psl.noaa.gov/news/News
https://psl.noaa.gov/events/Events
https://psl.noaa.gov/seminars/Seminars
/outreach/resources/Fact Sheets
/outreach/education/Education Resources
https://psl.noaa.gov/Home
https://psl.noaa.gov/aboutAbout us
https://psl.noaa.gov/newsText duplicate News
https://psl.noaa.gov/pubs/Text duplicate Publications
https://psl.noaa.gov/seminarsText duplicate Seminars
/psl/data/noticesText duplicate Data Notices
/psl/precip/pmp/updates.htmlNew window PMP Update Probable Maximum Precipitation Estimation Modernization team releases 2026 project update
IMG-ALT Heavy rain hits the ground and splashes. Adobe Stock | New Africa
A-TITLE Link to PSL PMP page
/psl/news/2026/nepmarineheatwa...Marine heatwaves Severity and persistence of Northeast Pacific marine heatwaves vary by season
IMG-ALT Open ocean with the sun beaming down and reflecting on choppy waves | Licensed from Adobe Stock
A-TITLE Link to news article
/psl/news/2026/prescribedburns...Wildland Fires New PSL study looks back to improve future prescribed burn planning and operations
IMG-ALT Dry vegetation burning in a prescribed burn as a firefighter monitors the spread | Photo: U.S. Forest Service
A-TITLE Link to project update page
/psl/news/2026/bigthompsonfloo...Extreme Precipitation The Big Thompson Flood 50 years later: Remembering the past. Modernizing for the future
IMG-ALT A destroyed house hangs off a mangled bridge over the Big Thompson River in Colorado with pine trees and mountains surrounding and debris littering the lands...
A-TITLE link to PSL News article
https://psl.noaa.gov/research/IMG-ALT research
https://psl.noaa.gov/research/Research
https://psl.noaa.gov/research/Text duplicate Research
https://psl.noaa.gov/research/Learn More
/products/monitor/IMG-ALT experimental products
/products/monitor/Experimental Products
/products/monitor/Text duplicate Experimental Products
/products/monitor/Text duplicate Learn More
https://psl.noaa.gov/data/IMG-ALT data
https://psl.noaa.gov/data/Data Access and Tools
https://psl.noaa.gov/data/Text duplicate Data Access and Tools
https://psl.noaa.gov/data/Text duplicate Learn More
/research/divisions/Text duplicate IMG-ALT data
/research/divisions/Divisions
/research/divisions/Text duplicate Divisions
/research/teams/Text duplicate Learn More
https://www.noaa.gov/disclaimerNew window External Subdomain External links disclaimer
https://psl.noaa.gov/about/About
/about/contacts.htmlText duplicate Contact Us
https://www.boulder.noaa.gov/p...New window External Subdomain Public Affairs
/site_index.htmlSite Index
https://psl.noaa.gov/survey/Take Our Survey
https://www.noaa.gov/protectin...External Subdomain Privacy Policy
https://psl.noaa.gov/disclaimer/Disclaimer
https://www.noaa.gov/accessibi...External Subdomain Accessibility
https://www.usa.gov/External Subdomain USA.gov
https://www.linkedin.com/showc...New window External Subdomain Follow PSL on
/psl/news/signupNew window Sign up for PSL News
https://www.commerce.gov/External Subdomain DOC
https://www.noaa.gov/External Subdomain NOAA
https://research.noaa.gov/External Subdomain OAR
https://boulder.noaa.gov/External Subdomain NOAA Boulder

Server configuration

HTTP redirects
(Critically important)
This page is using the meta refresh tag. Do not use meta refresh for redirects.
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 slow (1.29 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 (46 kB).

HTTP Response Header

NameValue
servernginx/1.31.8
dateThu, 22 Oct 2026 13:53:20 GMT
content-typetext/html; charset=UTF-8
content-length12264
x-frame-optionsSAMEORIGIN
accept-rangesbytes
varyAccept-Encoding
content-encodinggzip
strict-transport-securitymax-age=31536000; includeSubDomains
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 163 referring domains.
This page has 3,322 backlinks.
This page has backlinks from 148 different ip addresses.

Links from Wikipedia

You can find more links using Wikipedia search

Robots.txt

No valid Robots.txt file was found.

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psl.noaa.gov
Home: NOAA Physical Sciences Laboratory
US Department of Commerce, NOAA, Physical Sciences Laboratory

Most important keywords

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

KeywordResultRecheck
NOAA Physical Sciences Laboratory83%Check
Physical82%Check
Sciences82%Check
Laboratory82%Check
Physical Sciences Laboratory82%Check
NOAA78%Check
NOAA Boulder56%Check
Climate Science54%Check
PSL52%Check
gov52%Check
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