Physlets.org - SEO Checker

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Overview of the SEO Check
Meta information
72% 
Page quality
41% 
Page structure
100% 
Link structure
25% 
Server
88% 
External factors
100% 
SEO Score
Response time
0.66 s
File size
0.60 kB
Words
18
Media files
1
Number of links
0 internal / 1 external

Task list of SEO Improvements

Meta specifications

Title
(Critically important)
Open Source Physics Test Server
The length of the page title is perfect. (302 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)
No canonical link is specified.
Language
(Somewhat important)
Server location: United States of America
The language is not specified in the HTML markup.
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)
No favicon is linked in the HTML code.

Meta tags

NameValue
keywordsOSP Testing
charsetutf-8

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Page quality

Content
(Critically important)
There are only 18 words on this page. Use at least 250 words to provide useful information.
Words from the H1 heading are not used in the page content.
Only 1 paragraph/s was/were found on this page.
The average number of words per sentence of 4.33 words is low.
11.1% of the text are stop words.
Keywords used in the page title are also used in the page content. That's good!
No placeholders texts or images were found.
There are no duplicates on the site.
Frames
(Critically important)
This page does not use a frameset.
Mobile optimization
(Somewhat important)
No viewpoint tag is provided.
No 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
https://physlets.org/OSP_Collaborators.pngContributors

Page structure

H1 heading
(Critically important)
Open Source Physics Test Server
The H1 heading is perfect.
Headings
(Important)
The heading structure is perfect.

Heading structure

Heading levelContent
H1 Open Source Physics Test Server
This page seems to be an entry page, because only very few links were found.
There are 1 external links on this page.

Found links on this page

LinkAttributesAnchor text
https://www.compadre.org/osp/i...External Subdomain URL anchor text
https://www.compadre.org/osp/

Server configuration

HTTP redirects
(Critically important)
This page redirects to "https://physlets.org/"
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 of 0.66 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.
The file size of the HTML document is fine (1 kB).

HTTP Response Header

NameValue
last-modifiedSun, 29 Aug 2021 18:26:02 GMT
accept-rangesbytes
varyAccept-Encoding,User-Agent
content-encodinggzip
content-length390
content-typetext/html; charset=UTF-8
dateTue, 03 Sep 2024 20:45:33 GMT
server
statuscode200
http_versionHTTP/2

External factors

This website has excellent links from other websites.
This page has backlinks from 514 referring domains.
This page has 35,801 backlinks.
This page has backlinks from 424 different ip addresses.

Links from Wikipedia

No links from Wikipedia were found.

Robots.txt

Error Code 404:  Not found

HTTP_REFERER (none)

REMOTE_ADDR 116.202.182.111

REQUEST_URI /robots.txt

HTTP_HOST physlets.org

HTTP_USER_AGENT SeobilityBot (SEO Tool; https://www.seobility.net/sites/bot.html)

REDIRECT_STATUS 404

Similar sites

Search preview

Most important keywords

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

KeywordResultRecheck
Open62%Check
Source62%Check
Physics62%Check
Test62%Check
Server62%Check
Open Source62%Check
Open Source Physics62%Check
Source Physics Test62%Check
Physics Test Server62%Check
Open Source Physics Test61%Check
Show more keywords and terms

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