Chemlin.org - SEO Checker

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Overview of the SEO Check
Meta information
80% 
Page quality
71% 
Page structure
74% 
Link structure
100% 
Server
100% 
External factors
15% 
SEO Score
Response time
0.04 s
File size
9.40 kB
Words
257
Media files
2
Number of links
21 internal / 3 external

Task list of SEO Improvements

Meta specifications

Title
(Critically important)
ChemLin
The page title is too short. (82 pixels of 580 max pixel length) Optimize title
The page title is only one word.
There are no duplicate words in the title
Meta description
(Critically important)
ChemLin.org website about chemistry and chemical substances.
The length of the meta description is perfect. (397 pixels out of 1000 max pixel length)
Crawlability
(Critically important)
There are no problems in accessing the website.
Canonical URL
(Important)
https://www.chemlin.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)
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
titleChemLin
descriptionChemLin.org website about chemistry and chemical substances.
keywordsChemLin, chemistry, chemical, chemical substances, coumpounds, scientific information
viewportwidth=device-width, initial-scale=1.0
authorAndreas Jaeck
publisherAndreas Jaeck
copyrightAndreas Jaeck
robotsindex, follow
theme-color#317EFB
langen
charsetUTF-8

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Page quality

Content
(Critically important)
There are only 257 words on this page. Good pages should have about 800 words of useful content.
33.1% of the text are stop words.
The page contains a listing, which indicates a good text layout.
5 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 20.11 words is good.
Frames
(Critically important)
This page does not use a frameset.
Mobile optimization
(Somewhat important)
Multiple viewport tags are given. There should only be one.
A viewport "width=device-width, minimum-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 6 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
/images/chemlin-banner.svgChemLin LogoChemLin Logo
/images/news/new-isotopes.svgNew isotopes 2022New isotopes 2022

Page structure

H1 heading
(Critically important)
ChemLin
The H1 heading consists of only one word. There should be more information given.
The H1 heading is too short (7 characters). It should be at least 20 Characters long.
Headings
(Important)
The heading structure is perfect.

Heading structure

Heading levelContent
H1 ChemLin
H2 Into the world of chemistry ...
H2 New Isotopes 2024
H2 Newly determined half-lives
H2 Standard atomic weight of lead has been changed
H2 More Chemistry
H2 Social Media
H2 About ChemLin
The number of internal links is ok.
Every linktext is unique.
None of the anchor texts is too long.
All internal links are not using dynamic parameters.
There are 3 external links on this page.

Found links on this page

LinkAttributesAnchor text
https://www.chemlin.org/Anchor About
https://www.chemlin.org/Anchor Trivial anchor text
More
/search.phpSearch
/isotope/darmstadtium-275Darmstadtium-275
/isotope/osmium-160osmium-160
/isotope/tungsten-156tungsten-156
/isotope/actinium-203Actinium-203
/isotope/fluorine-30Fluorine-30
/isotope/germanium-71Germanium-71
/isotope/iridium-190Iridium-190
/isotope/samarium-146Samarium-146
/isotope/terbium-161Terbium-161
/chemical-elements/atomic-weig...atomic weight
/chemical-elements/lead.phplead
/chemical-elements/isotopic-ab...isotopic abundances
/chemical-elements/isotopes.phpisotopes
https://www.facebook.com/profi...New window External Subdomain Facebook
https://www.linkedin.com/compa...New window External Subdomain LinkedIn
https://twitter.com/Internetch...External Twitter
https://www.chemlin.org/Subdomain home
/about/index.phpabout
/about/imprint.phpcontact, imprint
/about/cookie-and-privacy-poli...cookie and privacy policy
/about/terms-of-use.phpterms of use

Server configuration

HTTP redirects
(Critically important)
The checked page does not redirect to another URL.
HTTP header
(Important)
No X-Powered HTTP header is sent.
This page uses GZip for compressed data transmission.
Performance
(Somewhat important)
The page response time is excellent with 0.04 seconds.
The file size of the HTML document is fine (9 kB).

HTTP Response Header

NameValue
servernginx
dateSat, 21 Dec 2024 12:55:46 GMT
content-typetext/html; charset=UTF-8
varyAccept-Encoding
cache-controlmax-age=60
expiresSat, 21 Dec 2024 12:56:46 GMT
content-encodinggzip
statuscode200
http_versionHTTP/2

External factors

This page has only a few links from other websites.
This page only has backlinks from 5 referring domains.
This page only has 31 backlinks.
This page only has few backlinks from 5 different ip addresses.

Links from Wikipedia

No links from Wikipedia were found.

Robots.txt

User-Agent: *
Allow: /

Similar sites

Search preview

www.chemlin.org
ChemLin
ChemLin.org website about chemistry and chemical substances.

Most important keywords

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

KeywordResultRecheck
ChemLin95%Check
chemistry54%Check
New48%Check
New Standard45%Check
Isotopes44%Check
new discoveries43%Check
update39%Check
Perma39%Check
link39%Check
atomic38%Check
Show more keywords and terms

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