Vaers.hhs.gov - SEO Checker

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Overview of the SEO Check
Meta information
80% 
Page quality
52% 
Page structure
79% 
Link structure
97% 
Server
32% 
External factors
100% 
SEO Score
Response time
0.62 s
File size
23.90 kB
Words
339
Media files
17
Number of links
29 internal / 18 external

Task list of SEO Improvements

Meta specifications

Title
(Critically important)
Vaccine Adverse Event Reporting System (VAERS)
The length of the page title is perfect. (460 pixels out of 580 max pixel length)
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)
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
descriptionEmpty
keywordsEmpty
theme-color#ffffff
langen
X-UA-CompatibleIE=edge,chrome=1
charsetutf-8

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Page quality

Content
(Critically important)
Some words from the page title are not used within the pages content
Only 2 paragraph/s was/were found on this page.
There are only 339 words on this page. Good pages should have about 800 words of useful content.
22.4% of the text are stop words.
The page contains a listing, which indicates a good text layout.
No placeholders texts or images were found.
There are no duplicates on the site.
The average number of words per sentence of 18.75 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.
This page only loads 3 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 7 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
https://vaers.hhs.gov/images/vaers-logo.pngVAERS LogoVaccine Adverse Event Reporting System
/images/feature-one-img-small.jpgFamily looking at computer screen
/images/feature-one-img-small.jpgDoctor consulting patient on how to report to VAERS
/images/feature-two-img-small.jpgIndividual searching vaccine adverse events data
/images/feature-three-img-small.jpgIndividual browsing VAERS web resources
/images/feature-four-img-small.jpgA woman completing a writable PDF form on her computer
/images/thumbnail_Imgs/helpfullinkone.pngFact Sheet for General Public and Healthcare Providers document
https://vaers.hhs.gov/images/pdf-icon.pngpdf iconpdf icon
/images/thumbnail_Imgs/helpfullinktwo.jpgSummary of 2016-2017 Influenza Vaccine Information document
/images/thumbnail_Imgs/helpfullinkthree.jpgImage of VAERS Publications
/images/thumbnail_Imgs/helpfullinkfour.jpgImage of Print and Web Material document
/images/thumbnail_Imgs/introvideo.jpgScreenshot of VAERS overview video
/images/thumbnail_Imgs/formvideo.jpgScreenshot of VAERS reporting video
/images/thumbnail_Imgs/video2.jpgScreenshot of Searching the VAERS Database video
.../thumbnail_Imgs/rightbtm_feature_one.jpgHealthcare Professional administering a vaccine to a mother's child
.../thumbnail_Imgs/rightbtm_feature_two.jpgIndividual in a lab monitoring vaccines
...humbnail_Imgs/rightbtm_feature_three.jpgMedical professionals in discussion

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.

Heading structure

Heading levelContent
H2 Have you had a reaction following a vaccination?
H2 Report an Adverse Event
H2 Search VAERS Data
H2 Review Resources
H2 Submit Follow-up Information
H2 Helpful Links
H2 Learning Tools
H2 Vaccine Safety Information
H3 Fact Sheet for General Public and Healthcare Providers [pdf - 415KB] pdf icon
H3 Summary of 2016-2017 Influenza Vaccine Information
H3 VAERS Publications
H3 Print and Web Material
H3 VAERS: An Overview and Demonstration
H3 VAERS: Online Reporting Demonstration
H3 Searching the VAERS WONDER Database
H3 Watch specific sections of the video
H3 Ensuring Vaccine Safety
H3 Safety monitoring in VAERS
H3 Information For Healthcare Providers
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 18 external links on this page.

Found links on this page

LinkAttributesAnchor text
/indexSpanish.htmlen Español
https://vaers.hhs.gov/index.htmlIMG-ALT VAERS Logo
https://vaers.hhs.gov/about.htmlAbout VAERS
/reportevent.htmlReport an Adverse Event
https://vaers.hhs.gov/data.htmlVAERS Data
https://vaers.hhs.gov/data.htmlVAERS Data Sets
/data/dataguide.htmlGuide to Interpreting Data
/resources.htmlResources
/resources/govtsites.htmlGovernment Websites
/resources/infoproviders.htmlFor Healthcare Providers
/resources/fluupdates.htmlSeasonal Flu Updates
/resources/materials.htmlMaterials and Learning Tools
/autoupload.htmlSubmit Follow-Up Information
/reportevent.htmlText duplicate Report an Adverse Event
https://vaers.hhs.gov/vip/Subdomain VAERS Information Portal
https://vaers.hhs.gov/faq.htmlClick here for information on reporting to VAERS after COVID-19 vaccination
/reportevent.htmlText duplicate Report an Adverse Event
/reportevent.htmlReview reporting requirements and submit reports.
https://vaers.hhs.gov/data.htmlSearch VAERS Data
https://vaers.hhs.gov/data.htmlDownload VAERS Data and search the CDC WONDER database.
/resources.htmlReview Resources
/resources.htmlFind materials, publications, learning tools, and other resources.
/autoupload.htmlSubmit Follow-up Information
/autoupload.htmlUpload additional information related to VAERS reports.
https://urldefense.us/v3/__htt...New window External Fact Sheet for General Public and Healthcare Providers [pdf - 415KB]
IMG-ALT pdf icon
A-TITLE Link to External Web Site
/resources/fluupdates.htmlSummary of 2016-2017 Influenza Vaccine Information
https://urldefense.us/v3/__htt...New window External VAERS Publications
A-TITLE Link to External Web Site
https://urldefense.us/v3/__htt...New window External Print and Web Material
A-TITLE Link to External Web Site
https://urldefense.us/v3/__htt...New window External VAERS: An Overview and Demonstration
A-TITLE Link to External Web Site
https://urldefense.us/v3/__htt...New window External VAERS: Online Reporting Demonstration
A-TITLE Link to External Web Site
https://urldefense.us/v3/__htt...New window External Searching the VAERS WONDER Database
A-TITLE Link to External Web Site
https://urldefense.us/v3/__htt...New window External Section 1: Introduction to VAERS
A-TITLE Link to External Web Site
https://urldefense.us/v3/__htt...New window External Section 2: How to Search VAERS Public Data
A-TITLE Link to External Web Site
https://urldefense.us/v3/__htt...New window External Section 3: Strengths and Limitations of VAERS Data
A-TITLE Link to External Web Site
https://urldefense.us/v3/__htt...New window External Section 4: Where to Get More Information
A-TITLE Link to External Web Site
https://urldefense.us/v3/__htt...New window External Ensuring Vaccine Safety
https://urldefense.us/v3/__htt...New window External Safety monitoring in VAERS
/resources/infoproviders.htmlInformation For Healthcare Providers
https://urldefense.us/v3/__htt...New window External Adobe Acrobat Reader
A-TITLE Link to External Web Site
https://vaers.hhs.gov/faq.htmlFAQs
/contact.htmlContact Us
/privacy.htmlPrivacy
https://urldefense.us/v3/__htt...External Vulnerability Disclosure Policy - HHS.gov
https://urldefense.us/v3/__htt...External USA.gov
https://urldefense.us/v3/__htt...External Centers for Disease Control and Prevention
https://urldefense.us/v3/__htt...External Food and Drug Administration
https://urldefense.us/v3/__htt...External U.S. Department of Health & Human Services

Server configuration

HTTP redirects
(Critically important)
This page redirects to "https://vaers.hhs.gov/"
HTTP header
(Important)
The HTML page should be transferred using GZip compression.
No X-Powered HTTP header is sent.
Performance
(Somewhat important)
The page response time of 0.62 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 page loads 4 CSS files. This may affect the page load time negatively.
This page only loads 3 JavaScript files. That's good!
The file size of the HTML document is fine (24 kB).

HTTP Response Header

NameValue
dateSat, 25 May 2024 13:49:16 GMT
serverApache
strict-transport-securitymax-age=63072000; includeSubdomains;
x-frame-optionsSAMEORIGIN
x-content-type-optionsnosniff
referrer-policystrict-origin-when-cross-origin
content-security-policydefault-src 'none'; script-src 'self'; connect-src 'self' https://apigw.cdc.gov:8443; img-src 'self'; style-src 'self' 'unsafe-inline'; manifest-src 'self'; font-src 'self'; frame-src 'self'; frame-ancestors 'self'; form-action https://wonder.cdc.gov 'self'
accept-rangesbytes
cache-controlno-store
expiresSun, 26 May 2024 13:49:16 GMT
pragmano-cache
x-xss-protection1; mode=block
content-length24437
content-typetext/html; charset=UTF-8
statuscode200
http_versionHTTP/1.1

External factors

Blacklists
(Nice to have)
This website is not classified "for adult only".
This page is referenced by wikipedia.
This website has excellent links from other websites.
This page has backlinks from 6,078 referring domains.
This page has 137,318 backlinks.
This page has backlinks from 4,370 different ip addresses.
Facebook popularity
(Somewhat important)
The page has 0 shares and comments on Facebook.

Links from Wikipedia

You can find more links using Wikipedia search

Robots.txt

No valid Robots.txt file was found.

Similar sites

Search preview

Most important keywords

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

KeywordResultRecheck
VAERS68%Check
Vaccine58%Check
Report58%Check
VAERS Data56%Check
Search VAERS56%Check
Vaccine Adverse Event Reporting56%Check
reporting54%Check
Adverse54%Check
Event54%Check
Adverse Event54%Check
Show more keywords and terms

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