Colibris.home.xs4all.nl - SEO Checker

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Overview of the SEO Check
Meta information
69% 
Page quality
42% 
Page structure
79% 
Link structure
100% 
Server
100% 
External factors
36% 
SEO Score
Response time
0.04 s
File size
8.60 kB
Words
304
Media files
11
Number of links
15 internal / 2 external

Task list of SEO Improvements

Meta specifications

Title
(Critically important)
Colibri Ammonia Absorption Refrigeration
The length of the page title is perfect. (369 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)
Language detected in text: en
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 character encoding is not specified.
The character encoding is not specified in the HTTP header.
Doctype
(Nice to have)
The doctype XHTML 1.0 Strict 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
google-site-verification_bcECDFV8ymLZvwCLFoJ_2vbZ92zHbgv7KGFldjBACQ
Ammonia Absorption Refrigerationtext/html; charset=UTF-8

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Page quality

Content
(Critically important)
Words from the H1 heading are not used in the page content.
There are only 304 words on this page. Good pages should have about 800 words of useful content.
32.2% 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.
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 21.9 words is good.
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 amount of tags is very high (9). We recommend using a maximum of 6 tags for this page.
Image SEO
(Somewhat important)
6 images have no alt attribute. The content of alt attributes is used by search engines.
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
/bilder/col_logo.gifcolibri logo
/images/de.gifgerman
/images/en.gifenglish
/bilder/berg.jpgNo alt attribute provided
/gallery_images/wechselbilder/logo.jpgAmmonia Absorption Refrigeration Plant
/bilder/spring.jpgNo alt attribute provided
/bilder/link.gifNo alt attribute provided
/bilder/link.gifNo alt attribute provided
/bilder/link.gifNo alt attribute provided
/bilder/link.gifNo alt attribute provided
...aw.w3.org/css-validator/images/vcss-blue
Insecure Content		CSS ist valide!

Page structure

H1 heading
(Critically important)
The environment friendly way of refrigeration!
The H1 heading is perfect.
Headings
(Important)
The structure of headings is missing one or more levels. Do not skip heading levels.

Heading structure

Heading levelContent
H1 The environment friendly way of refrigeration!
H4 Using (waste) heat to produce cooling with Ammonia Absorption Plants ARP
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 2 external links on this page.

Found links on this page

LinkAttributesAnchor text
http://www.colibri-bv.com/External Subdomain IMG-ALT colibri logo
/de/index.htmlIMG-ALT german
/index.htmlIMG-ALT english
/index.htmlHome
/pages/company.htmlColibri Company
/pages/team.htmlColibri Team
/pages/absorption_plants.htmlPlants and Components
/pages/applications.htmlApplications
/pages/services.htmlServices
/pages/examples.htmlExamples
/pages/features.htmlKey Features
/pages/principle.htmlWorking Principle
/pages/pt_diag.htmlThe Process in the P-T Diagram
/pages/documentation.htmlDownloads
/pages/contact.htmlContact
/pages/disclaimer.htmlDISCLAIMER & gen. data protection Declaration
http://jigsaw.w3.org/css-valid...External Subdomain IMG-ALT CSS ist valide!

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
dateSun, 10 Nov 2024 21:34:40 GMT
content-typetext/html
content-length2797
last-modifiedWed, 28 Sep 2022 14:08:05 GMT
etag"228c-5e9bd4a1c1b40-gzip"
accept-rangesbytes
cache-controlmax-age=604800, public, no-transform
varyAccept-Encoding
content-encodinggzip
strict-transport-securitymax-age=31536000
referrer-policyno-referrer-when-downgrade
content-security-policy-report-onlydefault-src 'self'; script-src 'self' 'unsafe-inline'; style-src 'self' https://www.w3schools.com https://use.fontawesome.com https://jalbum.net ; object-src 'none';
statuscode200
http_versionHTTP/2

External factors

This page has only a few links from other websites.
This page only has backlinks from 12 referring domains.
This page only has 56 backlinks.
This page only has few backlinks from 9 different ip addresses.

Links from Wikipedia

No links from Wikipedia were found.

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
Colibri64%Check
refrigeration62%Check
Absorption Refrigeration60%Check
Colibri Ammonia60%Check
Colibri absorption60%Check
Colibri Ammonia Absorption Refrigeration60%Check
Colibri Ammonia Absorption59%Check
Ammonia Absorption Refrigeration58%Check
Absorption56%Check
Ammonia56%Check
Show more keywords and terms

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