Socket.io - SEO Checker

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Overview of the SEO Check
Meta information
61% 
Page quality
48% 
Page structure
72% 
Link structure
66% 
Server
100% 
External factors
100% 
SEO Score
Response time
0.07 s
File size
58.10 kB
Words
173
Media files
133
Number of links
33 internal / 148 external

Task list of SEO Improvements

Meta specifications

Title
(Critically important)
Socket.IO
The page title is too short. (90 pixels of 580 max pixel length) Optimize title
The domain is used in the page's title.
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://socket.io/
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
generatorDocusaurus v2.4.3
viewportwidth=device-width,initial-scale=1
docusaurus_localeen
docusaurus_tagdefault
docsearch:languageen
docsearch:docusaurus_tagdefault
langen
twitter:cardsummary_large_image
og:titleSocket.IO
og:urlhttps://socket.io/
charsetUTF-8

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Page quality

Content
(Critically important)
There are only 173 words on this page. Use at least 250 words to provide useful information.
Only 2 paragraph/s was/were found on this page.
23.1% of the text are stop words.
The page contains a listing, which indicates a good text layout.
No placeholders texts or images were found.
There are no duplicates on the site.
The average number of words per sentence of 12.75 words is good.
Frames
(Critically important)
This page does not use a frameset.
Mobile optimization
(Somewhat important)
No Apple touch icon is specified.
A viewport "width=device-width,initial-scale=1" is provided.
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://socket.io/images/logo.svgSocket.IO logo
https://socket.io/images/logo-dark.svgSocket.IO logo
https://socket.io/images/logo.svgSocket.IO logo
https://socket.io/images/logo-dark.svgSocket.IO logo
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Page structure

H1 heading
(Critically important)
Socket.IO
The H1 heading is too short (9 characters). It should be at least 20 Characters long.
Headings
(Important)
The structure of headings is missing one or more levels. Do not skip heading levels.

Heading structure

Heading levelContent
H1 Socket.IO
H3 Performant
H3 Reliable
H3 Scalable
H3 Basic example
H3 Our sponsors
Some anchor texts are used more than once.
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 too many external links (148) on this page.

Found links on this page

LinkAttributesAnchor text
https://socket.io/Anchor Skip to main content
/blog/three-new-adapters/Three new adapters
https://socket.io/Socket.IO
IMG-ALT Socket.IO logo
https://socket.io/docs/v4/Guide
/docs/v4/tutorial/introductionTutorial
https://socket.io/get-started/Examples
/docs/v4/emit-cheatsheet/Emit cheatsheet
/docs/v4/server-api/Server API
/docs/v4/client-api/Client API
/docs/v4/troubleshooting-conne...Troubleshooting
https://stackoverflow.com/ques...New window External Stack Overflow
https://github.com/socketio/so...New window External GitHub Discussions
https://socketio-slackin.herok...New window External Subdomain Slack
https://socket.io/blogBlog
https://twitter.com/SocketIONew window External Twitter
https://cdn.socket.io/New window External Subdomain CDN
https://admin.socket.io/New window External Subdomain Admin UI
https://socket.io/docs/v4/faq/FAQ
/docs/v4/changelog/Changelog
https://github.com/socketio/so...New window External Roadmap
https://opencollective.com/soc...New window External Become a sponsor
https://socket.io/docs/v4/4.x
https://socket.io/docs/v4/Text duplicate 4.x
https://socket.io/docs/v3/3.x
https://socket.io/docs/v2/2.x
/docs/v4/changelog/Text duplicate Changelog
https://socket.io/English
https://socket.io/fr/Français
https://socket.io/pt-br/Português (Brasil)
https://socket.io/zh-CN/中文（中国）
https://github.com/socketio/so...New window External No Text
/docs/v4/tutorial/introductionGet started
https://socket.io/docs/v4/Documentation
https://replit.com/@socketio/s...External Replit
https://stackblitz.com/edit/so...External StackBlitz
https://codesandbox.io/s/socke...External CodeSandbox
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Server configuration

HTTP redirects
(Critically important)
This page redirects to "https://socket.io/"
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 0.07 seconds.
The file size of the HTML document is fine (58 kB).

HTTP Response Header

NameValue
access-control-allow-origin*
age8044
cache-controlpublic, max-age=0, must-revalidate
content-dispositioninline
content-encodinggzip
content-typetext/html; charset=utf-8
dateTue, 16 Apr 2024 00:26:49 GMT
etagW/"0b50d5cd1a4bfab903a95ea1f0478e27"
serverVercel
strict-transport-securitymax-age=63072000
x-vercel-cacheHIT
x-vercel-idfra1::tknqt-1713227209486-bd73924850c9
statuscode200
http_versionHTTP/2

External factors

Blacklists
(Nice to have)
This website is not classified "for adult only".
This page is referenced by wikipedia.
This website has excellent links from other websites.
This page has backlinks from 5,853 referring domains.
This page has 720,494 backlinks.
This page has backlinks from 3,893 different ip addresses.
Facebook popularity
(Somewhat important)
The page has 0 shares and comments on Facebook.

Links from Wikipedia

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Robots.txt

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socket.io
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Most important keywords

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

KeywordResultRecheck
Socket80%Check
new43%Check
News43%Check
example40%Check
sponsor40%Check
sponsors40%Check
Help39%Check
Tools39%Check
Client38%Check
Server38%Check
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