Silentspring.org - SEO Checker

Sign up for free! PDF Export
Overview of the SEO Check
Meta information
80% 
Page quality
81% 
Page structure
43% 
Link structure
85% 
Server
100% 
External factors
100% 
SEO Score
Response time
0.15 s
File size
25.50 kB
Words
329
Media files
10
Number of links
37 internal / 4 external

Task list of SEO Improvements

Meta specifications

Title
(Critically important)
Home | Silent Spring Institute
The length of the page title is perfect. (261 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://silentspring.org/
There is a valid canonical link 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)
The specified alternate links have no errors.
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
msapplication-TileColor#da532c
theme-color#ffffff
favicon-generatorDrupal responsive_favicons + realfavicongenerator.net
GeneratorDrupal 10 (https://www.drupal.org)
MobileOptimizedwidth
HandheldFriendlytrue
viewportwidth=device-width, initial-scale=1.0
langen
charsetutf-8

Automatically check silentspring.org including all subpages at once!

Try for free
Guaranteed free of charge during trial period.

Page quality

Content
(Critically important)
There are only 329 words on this page. Good pages should have about 800 words of useful content.
30.7% 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.
8 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 17.4 words is good.
Frames
(Critically important)
This page does not use a frameset.
Mobile optimization
(Somewhat important)
A viewport "width=device-width, initial-scale=1.0" 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 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)
This page is optimized perfectly for social networks.
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
/themes/custom/ssi2019/logo.svgHome
...2971-Edit_2.jpg?h=890cae8b&itok=Saj32XNqfemale scientist
...392154_1500.jpg?h=cc556458&itok=tajYCoDtasian family in kitchen
...6 cropped_0.jpg?h=32b892ee&itok=EoOcs24eour science
...497002_1500.jpg?h=f36811e7&itok=9nuuQWEiwoman shopping
...-1451276983.jpg?h=9ee2bcb4&itok=IzvpKwlTconsumer standing in store aisle
...x 3 in) (1).png?h=3a0c34ca&itok=egP9JoVZScience Café: Creating Healthier Homes
...-1654530530.jpg?h=ceb041e5&itok=BGQDuEXxboy drinking water at kitchen sink
.../cta/detox_me_homepage.jpg?itok=AYtk4qN2Detox Me app
...breast_cancer_homepage.jpg?itok=1d8Cpw14Breast cancer and the environment

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 Global Nav
H2 Donate
H2 Main menu
H2 SSI: An Introduction
H2 Learn More About SSI
H2 Main action items
H2 Explore
H2 Contact
H2 Follow Us
H2 Stay Connected
H3 Silent Spring Institute is a mission-driven scientific research organization dedicated to uncovering the environmental causes of breast cancer
H3 Core Values
H3 Our Science
H3 Our Impact
H3 Companies quietly switching out toxic product ingredients in response to California law
H3 Science Café: Creating Healthier Homes
H3 Over 97 million U.S. residents exposed to unregulated contaminants in their drinking water
Some anchor texts are used more than once.
There are 3 links with a trivial anchor text.
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 4 external links on this page.

Found links on this page

LinkAttributesAnchor text
https://silentspring.org/Anchor Skip to main content
https://silentspring.org/Anchor Menu
A-TITLE Menu
https://silentspring.org/about-usAbout Us
https://silentspring.org/newsNews
https://secure.lglforms.com/fo...External Subdomain Donate
https://silentspring.org/IMG-ALT Home
https://silentspring.org/Silent Spring Institute
/core-valuesCore Values
/our-scienceOur Science
/our-impactOur Impact
/support-our-workSupport Our Work
/support-our-workSupport our work
/core-valuesText duplicate Core Values
/core-valuesIMG-ALT asian family in kitchen
/our-scienceText duplicate Our Science
/our-impactText duplicate Our Impact
/our-impactIMG-ALT woman shopping
/news/companies-quietly-switch...Companies quietly switching out toxic product ingredients in response to California law
/news/companies-quietly-switch...Trivial anchor text
Read more
/event/science-cafe-creating-h...IMG-ALT Science Café: Creating Healthier Homes
/event/science-cafe-creating-h...Text duplicate Science Café: Creating Healthier Homes
/event/science-cafe-creating-h...Text duplicate Trivial anchor text
Read more
/news/over-97-million-us-resid...Over 97 million U.S. residents exposed to unregulated contaminants in their drinking water
/news/over-97-million-us-resid...Text duplicate Trivial anchor text
Read more
/detox-me-app-tips-healthier-l...IMG-ALT Detox Me app
/why-study-environmental-chemi...IMG-ALT Breast cancer and the environment
https://silentspring.org/twitterTwitter
https://silentspring.org/facebookFacebook
https://silentspring.org/youtubeYouTube
https://www.instagram.com/sile...New window External Subdomain Instagram
https://www.linkedin.com/compa...New window External Subdomain LinkedIn
https://silentspring.org/sign-upSubscribe
A-TITLE Sign up for the latest news from Silent Spring
https://silentspring.org/node/17Privacy Policy
https://silentspring.org/Text duplicate Home
https://silentspring.org/newsText duplicate News
https://silentspring.org/about-usText duplicate About Us
/core-valuesText duplicate Core Values
/our-scienceText duplicate Our Science
/our-impactText duplicate Our Impact
/support-our-workText duplicate Support Our Work
https://secure.lglforms.com/fo...External Subdomain Text duplicate Donate

Server configuration

HTTP redirects
(Critically important)
This page redirects to "https://silentspring.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 excellent with 0.15 seconds.
The file size of the HTML document is fine (26 kB).

HTTP Response Header

NameValue
cache-controlmax-age=900, public
content-encodinggzip
content-languageen
content-typetext/html; charset=UTF-8
etagW/"1743427363"
expiresSun, 19 Nov 1978 05:00:00 GMT
last-modifiedMon, 31 Mar 2025 13:22:43 GMT
servernginx
strict-transport-securitymax-age=300
x-content-type-optionsnosniff
x-drupal-cacheHIT
x-drupal-dynamic-cacheMISS
x-frame-optionsSAMEORIGIN
x-generatorDrupal 10 (https://www.drupal.org)
x-pantheon-styx-hostnamestyx-fe3-a-b749b5986-227nt
x-styx-req-idc27ac956-0e39-11f0-9054-e60119d58215
dateMon, 31 Mar 2025 14:21:00 GMT
x-served-bycache-chi-kigq8000044-CHI, cache-fra-eddf8230153-FRA
x-cacheHIT, MISS
x-cache-hits3, 0
x-timerS1743430861.862768,VS0,VE112
varyAccept-Encoding, Cookie, Cookie, Cookie
age692
accept-rangesbytes
via1.1 varnish, 1.1 varnish
content-length8083
statuscode200
http_versionHTTP/2

External factors

This website has excellent links from other websites.
This page has backlinks from 265 referring domains.
This page has 636 backlinks.
This page has backlinks from 242 different ip addresses.

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.md
Disallow: /composer/Metapackage/README.txt
Disallow: /composer/Plugin/ProjectMessage/README.md
Disallow: /composer/Plugin/Scaffold/README.md
Disallow: /composer/Plugin/VendorHardening/README.txt
Disallow: /composer/Template/README.txt
Disallow: /modules/README.txt
Disallow: /sites/README.txt
Disallow: /themes/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
Disallow: /media/oembed
Disallow: /*/media/oembed
# 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: /index.php/media/oembed
Disallow: /index.php/*/media/oembed

Similar sites

Search preview

Most important keywords

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

KeywordResultRecheck
Silent63%Check
Spring63%Check
Silent Spring63%Check
Silent Spring Institute59%Check
Institute52%Check
Science46%Check
SSI44%Check
main43%Check
Breast Cancer42%Check
health40%Check
Show more keywords and terms

Automatically check silentspring.org including all subpages at once!

Try for free
Guaranteed free of charge during trial period.

Cookie Policy

We use cookies to make our site work and also for analytics and advertising purposes. You can enable or disable optional cookies as desired. See the following links for more information.

Contact | Privacy

We need these so the site can function properly

So we can better understand how visitors use our website

So we can serve you tailored ads and promotions