- SEO Checker

Overview of the SEO Check
Meta information
Page quality
Page structure
Link structure
External factors
SEO Score
Response time
0.77 s
File size
119.30 kB
Media files
Number of links
176 internal / 4 external

Task list of SEO Improvements

Meta specifications

(Critically important)
Sleep Foundation
The page title is too short. (159 pixels of 580 max pixel length) Optimize title
There are no duplicate words in the title
Meta description
(Critically important)
The meta description is missing.
(Critically important)
There are no problems in accessing the website.
Canonical URL
There is a valid canonical link specified.
(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.
(Somewhat important)
The domain name is very long.
The domain is no subdomain.
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.
(Nice to have)
The doctype HTML 5 is set correctly.
The doctype is placed at first in the HTML code.
(Nice to have)
The favicon is linked correctly.

Meta tags

viewportwidth=device-width, initial-scale=1, maximum-scale=1, user-scalable=no
robotsmax-snippet:-1, max-image-preview:large, max-video-preview:-1
og:titleSleep Foundation
og:site_nameSleep Foundation

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Page quality

(Critically important)
This page contains 1208 words. That's ok.
29.1% 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.
25 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 17.79 words is good.
(Critically important)
This website does not use a frameset.
Mobile optimization
(Somewhat important)
No Apple touch icon is specified.
A viewport "width=device-width, initial-scale=1, maximum-scale=1, user-scalable=no" is provided.
This website only loads 1 JavaScript files. That's good!
Bold and strong tags
(Somewhat important)
The usage of strong and bold tags is perfect. We recommend the use of up to 24 tags for this page.
Image SEO
(Somewhat important)
4 images have no alt attribute. The content of alt attributes is used by search engines.
Social Networks
(Nice to have)
This website is optimized perfectly for social networks.
Additional markup
(Nice to have)
No additional page markup was found.
(Somewhat important)
This website uses HTTPS to protect privacy and integrity of the exchanged data.
All included files are also transferred via HTTPS.

Page structure

H1 heading
(Critically important)
There is no H1 heading specified.
The structure of headings is missing one or more levels. Do not skip heading levels.
There are 30 headings on the page. The amount of headings should be in a more proper relation to the amount of text.

Heading structure

Heading levelContent
H2 COVID-19 Updates
H2 Daylight Saving Time
H2 How Much Sleep Do We Really Need?
H2 Insomnia
H2 Sleep Apnea
H2 Narcolepsy
H2 Shift Work Disorder
H2 Excessive Sleepiness
H2 Our commitment to helping you get a better night's sleep
H3 Common Sleep Disorders
H3 Looking for Something Specific?
H3 Latest Articles
H3 What's the Connection Between Race and Sleep Disorders?
H3 Parkinson's Disease and Sleep
H3 How to Use a CPAP Machine for Better Sleep
H3 Mouth And Throat Exercises to Help Stop Snoring and Improve OSA
H3 Stages of Sleep
H3 Caffeine and Sleep
H3 Pain and Sleep
H3 25 Random Facts about Sleep
H3 How Electronics Affect Sleep
H3 How Your Body Uses Calories While You Sleep
H3 Sleep Solutions
H3 Best Mattress of 2021
H3 Best Pillows of 2021
H3 Best Sheets of 2021
H3 Best Weighted Blankets of 2021
H3 Best Adjustable Beds of 2021
H3 Featured Topics
H4 Privacy Overview
Some internal link anchor texts are too long.
Some anchor texts are used more than once.
The amount of internal links is ok.
All internal links don't have dynamic parameters.
There are 4 external links on this page.
LinkAttributesAnchor text sleep foundation duplicate IMG-ALT sleep foundation duplicate IMG-ALT sleep foundation duplicate IMG-ALT sleep foundation
/sleep-topicsSleep Topics
/sleep-hygiene/healthy-sleep-tipsHealthy Sleep Tips
/sleep-hygieneSleep Hygiene
/sleep-deprivationSleep Deprivation
/how-sleep-worksHow Sleep Works
/circadian-rhythmCircadian Rhythm
/mental-healthMental Health
/baby-sleepBaby Sleep
/children-and-sleepChildren and Sleep
/aging-and-sleepAging and Sleep
/how-sleep-works/how-much-slee...Recommended Sleep Times
/how-sleep-works/stages-of-sleepStages of Sleep
/sleep-guidelines-covid-19-iso...COVID-19 and Sleep
/physical-healthPhysical Health
/physical-activityPhysical Activity
/sleep-disordersSleep Disorders
/sleep-apneaSleep Apnea
/restless-legs-syndromeRestless Leg Syndrome (RLS)
/rem-sleep-behavior-disorderREM Sleep Behavior Disorder
/non-24-sleep-wake-disorderNon-24-Hour Sleep Wake Disorders
/shift-work-disorderShift Work Disorder
/excessive-sleepinessExcessive Sleepiness
/sleep-solutionsSleep Solutions
/best-mattressFind the Best Mattress
/best-mattress/best-mattress-f...For Side Sleepers
/best-mattress/best-mattress-f...For Stomach Sleepers
/best-mattress/best-mattress-f...For Back Pain
/best-mattress/best-memory-foa...Memory Foam Mattress
/best-mattress/best-mattress-f...For Heavy People
/best-mattress/best-budget-mat...Budget Mattress
/best-mattress/best-mattress-i...Mattress in a Box
/best-mattress/best-cooling-ma...Cooling Mattresses
/best-mattress/best-hybrid-mat...Hybrid Mattress
/best-mattress/best-firm-mattressFirm Mattresses
/best-mattress/best-soft-mattressSoft Mattress
/best-mattress/best-online-mat...Best Online Mattress
/mattress-sizesMattress Sizes
/mattress-reviewsMattress Reviews
/mattress-reviews/tuft-and-nee...Tuft and Needle
/mattress-reviews/purple-hybri...Purple Hybrid
/mattress-comparisonsMattress Comparisons
/mattress-comparisons/leesa-vs...Casper vs Leesa
/mattress-comparisons/nectar-v...Casper vs Nectar
/mattress-comparisons/casper-v...Casper vs Purple
/mattress-comparisons/tuft-and...Casper vs Tuft and Needle
/mattress-comparisons/leesa-vs...Leesa vs Tuft and Needle
/mattress-comparisons/tuft-and...Purple vs Tuft and Needle
/mattress-comparisons/purple-v...Purple vs Tempurpedic
/mattress-comparisons/tempurpe...Tempurpedic vs Sleep Number
/mattress-salesMattress Sales
/mattress-sales/black-friday-m...Black Friday Sales 2020
/mattress-sales/cyber-monday-m...Cyber Monday Sales 2020
/best-weighted-blanketsWeighted Blankets
/best-mattress-toppersBest Mattress Toppers
/sheet-reviewsSheet Reviews
/weighted-blanket-reviewsWeighted Blanket Reviews
/best-anti-snoring-mouthpieces...Anti-Snoring Mouthpieces and Mouthguards
/melatoninMelatonin and Sleep
/nsf-partnershipNSF Partnership
/professionals/sleep-america-p...Sleep In America Polls
/sleep-guidelines-covid-19-iso...COVID-19 Updates Learn More
IMG-ALT COVID-19 Updates
/circadian-rhythm/daylight-sav...Daylight Saving Time Learn More
IMG-ALT Daylight Saving Time
/how-sleep-works/how-much-slee...How Much Sleep Do We Really Need? Learn More
IMG-ALT How Much Sleep Do We Really Need?
/insomniaInsomnia Insomnia is a sleep disorder where you have trouble falling or staying asleep. Insomnia may be short-lived (acute), or long-lasting (chronic).
IMG-ALT Insomnia
/sleep-apneaSleep Apnea Marked by abnormal breathing at night, sleep apnea is one of the most common sleep disorders, affecting adults and children alike.
IMG-ALT Sleep Apnea
/narcolepsyNarcolepsy Falling asleep during the day despite eight hours of sleep? Narcolepsy, a sleep disorder, may be to blame
IMG-ALT Narcolepsy
/shift-work-disorderShift Work Disorder Many people have jobs that require them to work when they may otherwise be sleeping, resulting in poor sleep hygiene.
IMG-ALT Shift Work Disorder
/excessive-sleepinessExcessive Sleepiness People struggling with excessive sleepiness feel sluggish and groggy throughout the day, which can lead to accidents and long-term healt...
IMG-ALT Excessive Sleepiness
/how-sleep-works/whats-connect...IMG-ALT What's the Connection Between Race and Sleep Disorders?
/insomniaText duplicate Insomnia
/sleep-disordersText duplicate Sleep Disorders
/sleep-hygieneSleep Health
/sleep-solutionsSleep Tools & Tips
/how-sleep-works/whats-connect...What's the Connection Between Race and Sleep Disorders? The burden of sleeping problems falls more heavily on people of color. Our guide explores racial disp...
/physical-health/parkinsons-di...IMG-ALT Parkinsons and Sleep
/insomniaText duplicate Insomnia
/physical-healthPhysical Health/Conditions
/restless-legs-syndromeRestless Leg Syndrome
/sleep-apneaText duplicate Sleep Apnea
/sleep-topicsText duplicate Sleep Topics
/physical-health/parkinsons-di...Parkinson's Disease and Sleep Individuals with Parkinson's disease have a higher risk of suffering from poor sleep. Addressing these sleep problems may impro...
/cpap/how-to-use-cpap-machineIMG-ALT NSF
/sleep-apneaText duplicate Sleep Apnea
/sleep-disordersText duplicate Sleep Disorders
/sleep-topicsText duplicate Sleep Topics
/cpap/how-to-use-cpap-machineHow to Use a CPAP Machine for Better Sleep Learn more about how these medical devices can make a big difference in nighttime comfort for people with breathin...
/snoring/mouth-exercises-to-st...IMG-ALT Mouth Exercise Snoring
/sleep-apneaText duplicate Sleep Apnea
/sleep-related-breathing-disor...Sleep Related Breathing Disorders
/sleep-solutionsText duplicate Sleep Tools & Tips
/snoringText duplicate Snoring
/snoring/mouth-exercises-to-st...Mouth And Throat Exercises to Help Stop Snoring and Improve OSA Toning the muscles in your throat and mouth can help stop mild snoring and improve obstructiv...
/how-sleep-works/stages-of-sleepIMG-ALT man sleeping
/how-sleep-worksText duplicate How Sleep Works
/how-sleep-works/stages-of-sleepStages of Sleep When thinking about getting the sleep you need, it's normal to focus on how many hours of sleep you get.…
/nutrition/caffeine-and-sleepIMG-ALT Caffeine and Sleep
/insomniaText duplicate Insomnia
/nutritionText duplicate Nutrition
/sleep-disordersText duplicate Sleep Disorders
/sleep-hygiene/bedtime-routine...Sleep Routine
/sleep-topicsText duplicate Sleep Topics
/nutrition/caffeine-and-sleepCaffeine and Sleep Discover a wealth of information on caffeine and how it affects sleep because caffeine is a drug that can cause…
/physical-health/pain-and-sleepIMG-ALT Pain and Sleep
/physical-healthText duplicate Physical Health/Conditions
/physical-health/pain-and-sleepPain and Sleep Sleep and pain share a bidirectional relationship. Learn how to improve your sleep if you're in pain, and how better…
/how-sleep-works/sleep-facts-s...Text duplicate IMG-ALT NSF
/how-sleep-worksText duplicate How Sleep Works
/sleep-newsSleep News
/sleep-solutionsText duplicate Sleep Tools & Tips
/how-sleep-works/sleep-facts-s...25 Random Facts about Sleep Discover how much you don't know with these 25 Facts about sleep. Learn from the National Sleep Foundation.
/bedroom-environment/see/how-e...IMG-ALT sleep foundation touch
/bedroom-environment/see/how-e...How Electronics Affect Sleep Our world is full of gadgets. For both work and entertainment, technology use is increasingly popular, and the evening hours…
/how-sleep-works/how-your-body...Text duplicate IMG-ALT NSF
/how-sleep-worksText duplicate How Sleep Works
/sleep-hygieneText duplicate Sleep Health
/sleep-hygiene/bedtime-routine...Text duplicate Sleep Routine
/sleep-solutionsText duplicate Sleep Tools & Tips
/sleep-topicsText duplicate Sleep Topics
/how-sleep-works/how-your-body...How Your Body Uses Calories While You Sleep Learn how many calories you burn during sleep, which sleep stages burn the most calories, why some people have a…
/best-mattressBest Mattress of 2021
IMG-ALT NSF_9_J_Sleepfoundation_SleepParalysis_WhatCausesThisREMPhenomenon_Purchased_1440x600.jpg
/best-pillowsBest Pillows of 2021
IMG-ALT best pillows
/best-sheetsBest Sheets of 2021
IMG-ALT Company Cotton Bamboo Sateen Sheet Set
/best-weighted-blanketsBest Weighted Blankets of 2021
IMG-ALT best weighted blankets
/best-adjustable-bedBest Adjustable Beds of 2021
IMG-ALT Best Adjustable Beds Hero
/how-sleep-worksText duplicate How Sleep Works
/sleep-hygieneText duplicate Sleep Hygiene
/mental-healthMental Health and Sleep
/physical-healthPhysical Health and Sleep
/nutritionNutrition and Sleep
/aging-and-sleepText duplicate Aging and Sleep
/baby-sleepBabies and Sleep
/children-and-sleepText duplicate Children and Sleep
/teens-and-sleepTeens and Sleep
/circadian-rhythmText duplicate Circadian Rhythm
/snoringText duplicate Snoring
/bedroom-environmentBedroom Environment
/travel-and-sleepTravel and Sleep
/sleep-topicsSee All Sleep Topics
/editorial-policyRead our Editorial Policy duplicate IMG-ALT sleep foundation
/sleep-topicsText duplicate Sleep Topics
/sleep-disordersText duplicate Sleep Disorders
/sleep-solutionsText duplicate Sleep Solutions
/for-professionalsNSF Sleep Research for Professionals
/professionals/sleep-america-p...Sleep in America Polls
/about-usAbout Us
/about-usContact Us
/editorial-policyEditorial Policy
/advertising-disclosureAdvertising Disclosure
/privacy-policyPrivacy Policy
/privacy-policyText duplicate Privacy Policy No Text No Text No Text OneCare

Server configuration

HTTP redirects
(Critically important)
This website redirects to ""
HTTP header
No X-Powered HTTP header is sent.
This website uses GZip for compressed data transmission.
(Somewhat important)
The page response time of 0.77 seconds is longer than the recommended limit of 0.4 seconds. A high response time unnecessarily slows down search engine crawling and results in bad user experience as well.
This website does not require any CSS files.
This website only loads 1 JavaScript files. That's good!
The file size of the HTML document is fine (119 kB).

HTTP Response Header

dateSat, 09 Jan 2021 17:06:26 GMT
content-typetext/html; charset=UTF-8
set-cookie150 Characters
set-cookie114 Characters
link<>; rel=shortlink
expiresSat, 09 Jan 2021 17:16:25 GMT
strict-transport-securitymax-age=63072000; includeSubdomains; preload
x-xss-protection1; mode=block
expect-ctmax-age=604800, report-uri=""

External factors

(Critically important)
This website is not classified "for adult only".
This website is not listed on the Shallalist.
This website is referenced by wikipedia.
This website has excellent links from other websites.
This website has backlinks from 47,875 referring domains.
This website has 420,732 backlinks.
This website has backlinks from 29,962 different ip addresses.
Facebook popularity
(Somewhat important)
This website has social activity like shares, comments or likes on facebook.
Listed on Webwiki
(Nice to have)
This website is listed on Webwiki.


# 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:
# Ignored:
# For more information about the robots.txt standard, see:

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/
Disallow: /go/
Disallow: *?s=*

# wordpress content
Disallow: /wp-admin/
# Disallow: /go/
Allow: /wp-admin/admin-ajax.php

#sitemap url

Facebook popularity

Shares / Likes / Comments

Only the data for the given URL is shown. We cannot determine the social actions for a linked fan page.

Search preview
Sleep Foundation

Most important keywords

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

Sleep Foundation61%Check
Sleep Disorders50%Check
Sleep Apnea49%Check
baby sleep48%Check
Sleep Solutions48%Check
Sleep Research48%Check
Sleep News48%Check
Sleep Topics48%Check

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