Sites.astro.caltech.edu - SEO Checker

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Overview of the SEO Check
Meta information
67% 
Page quality
41% 
Page structure
58% 
Link structure
0% 
Server
0% 
External factors
100% 
SEO Score
Response time
0.33 s
File size
0.20 kB
Words
0
Media files
0
Number of links
0 internal / 0 external

Task list of SEO Improvements

Meta specifications

Title
(Critically important)
Taking to www.astro.caltech.edu
The length of the page title is perfect. (292 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)
This page is hosted on a subdomain. Use a top level domain for better SEO results.
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)
No doctype markup was found.
Favicon
(Nice to have)
No favicon is linked in the HTML code.

Meta tags

NameValue
keywordsautomatic redirection
refresh2; URL=https://www.astro.caltech.edu

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Page quality

Content
(Critically important)
There are only 0 words on this page. Use at least 250 words to provide useful information.
Some words from the page title are not used within the pages content
No paragraphs were detected.
No placeholders texts or images were found.
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.
This page does not require any JavaScript files.
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)
The HTTPS protocol for secure data transmission is not used.

Media list

No media files were found.

Page structure

H1 heading
(Critically important)
There is no H1 heading specified.
Headings
(Important)
There are no headings specified on the page. Headings are important for search engine optimization and help to structure your content.

Heading structure

No headings were found.
This page seems to be an entry page, because only very few links were found.
There are no external links on this page.

Found links on this page

No internal links were found.

Server configuration

HTTP redirects
(Critically important)
This page redirects to another page due to a meta refresh redirect tag. Redirects should only be done by HTTP redirects.
HTTP header
(Important)
The used PHP version is outdated and may be a security risk.
The HTML page should be transferred using GZip compression.
The web server version is sent within the HTTP header.
No X-Powered HTTP header is sent.
Performance
(Somewhat important)
The page response time is excellent with 0.33 seconds.
This page does not require any CSS files.
This page does not require any JavaScript files.
The file size of the HTML document is fine (0 kB).

HTTP Response Header

NameValue
dateThu, 14 Nov 2024 13:17:13 GMT
serverApache/2.4.6 (Red Hat Enterprise Linux) OpenSSL/1.0.1e-fips mod_fcgid/2.3.9 PHP/5.4.16 mod_wsgi/3.4 Python/2.7.5
accept-rangesbytes
content-length222
content-typetext/html; charset=UTF-8
statuscode200
http_versionHTTP/1.1

External factors

This website has excellent links from other websites.
This page has backlinks from 2,572 referring domains.
This page has 8,032 backlinks.
This page has backlinks from 1,040 different ip addresses.

Links from Wikipedia

No links from Wikipedia were found.

Robots.txt

User-agent: Yandex 
Disallow: /

BrowserMatchNoCase "Yandex" bots
Order Allow,Deny
Allow from ALL
Deny from env=bots

User-agent: *
Disallow: /mirrors/
Disallow: /t2h/
Disallow: /backup/
Disallow: /test/
Disallow: *.tlhm
Disallow: /zarthimages
Disallow: /www/zarthimages

Similar sites

Search preview

sites.astro.caltech.edu
Taking to www.astro.caltech.edu

Most important keywords

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

KeywordResultRecheck
astro23%Check
caltech23%Check
edu23%Check
Taking11%Check
www11%Check

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