Scheme.org - SEO Checker

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Overview of the SEO Check
Meta information
97% 
Page quality
75% 
Page structure
74% 
Link structure
0% 
Server
38% 
External factors
100% 
SEO Score
Response time
0.55 s
File size
9.40 kB
Words
510
Media files
0
Number of links
2 internal / 60 external

Task list of SEO Improvements

Meta specifications

Title
(Critically important)
The Scheme Programming Language
The length of the page title is perfect. (336 pixels out of 580 max pixel length)
There are no duplicate words in the title
Meta description
(Critically important)
Scheme is a minimalist dialect of the Lisp family of programming languages. This is the official website for the Scheme language.
The length of the meta description is perfect. (794 pixels out of 1000 max pixel length)
Crawlability
(Critically important)
There are no problems in accessing the website.
Canonical URL
(Important)
https://www.scheme.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 character encoding is not specified in the HTTP header.
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
viewportwidth=device-width, initial-scale=1
descriptionScheme is a minimalist dialect of the Lisp family of programming languages. This is the official website for the Scheme language.
langen
charsetUTF-8

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Page quality

Content
(Critically important)
Only 2 paragraph/s was/were found on this page.
This page contains 510 words. That's ok.
26.9% 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.
No placeholders texts or images were found.
There are no duplicates on the site.
The average number of words per sentence of 23.2 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.
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 10 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

No media files were found.

Page structure

H1 heading
(Critically important)
Scheme
The H1 heading consists of only one word. There should be more information given.
The H1 heading is too short (6 characters). It should be at least 20 Characters long.
Headings
(Important)
The heading structure is perfect.

Heading structure

Heading levelContent
H1 Scheme
H2 What's new in Scheme
H2 Language
H2 Community
H2 Implementations
H2 Tools
This page seems to be an entry page, because only very few links were found.
Every linktext is unique.
None of the anchor texts is too long.
All internal links are not using dynamic parameters.
There are too many external links (60) on this page.

Found links on this page

LinkAttributesAnchor text
https://docs.scheme.org/External Subdomain Docs
https://community.scheme.org/External Subdomain Community
https://standards.scheme.org/External Subdomain Standards
https://get.scheme.org/External Subdomain Implementations
https://en.wikipedia.org/wiki/...External Subdomain Lisp family
https://en.wikipedia.org/wiki/...External Subdomain functional programming
https://en.wikipedia.org/wiki/...External Subdomain domain-specific languages
https://en.wikipedia.org/wiki/...External Subdomain dynamic languages
https://spritely.institute/new...External Make a game with Hoot for the Autumn Lisp Game Jam!
https://guix.gnu.org/blog/2024...External Subdomain Build User Takeover Vulnerability
https://spritely.institute/new...External Our first office hours: A recap (and how to join the next one)
https://idiomdrottning.org/mvdExternal md, mvd and cpd
https://wingolog.org/archives/...External preliminary notes on a nofl field-logging barrier
https://planet.scheme.org/External Subdomain Planet Scheme
https://try.scheme.org/External Subdomain Try Scheme
https://faq.scheme.org/External Subdomain FAQ
https://books.scheme.org/External Subdomain Books
https://cookbook.scheme.org/External Subdomain Cookbook
https://standards.scheme.org/External Subdomain Text duplicate Standards
https://srfi.scheme.org/External Subdomain SRFI
https://research.scheme.org/External Subdomain Research
https://community.scheme.org/External Subdomain Text duplicate Community
https://workshop.scheme.org/External Subdomain Workshop
https://events.scheme.org/External Subdomain Events
https://planet.scheme.org/External Subdomain Planet
https://video.scheme.org/External Subdomain Video
https://lists.scheme.org/External Subdomain Lists
https://wiki.scheme.org/External Subdomain Wiki
https://groups.scheme.org/External Subdomain Groups
https://get.scheme.org/External Subdomain Get Scheme
https://bigloo.scheme.org/External Subdomain Bigloo
https://chez.scheme.org/External Subdomain Chez Scheme
https://chibi.scheme.org/External Subdomain Chibi-Scheme
https://chicken.scheme.org/External Subdomain CHICKEN
https://cyclone.scheme.org/External Subdomain Cyclone
https://gambit.scheme.org/External Subdomain Gambit
https://gauche.scheme.org/External Subdomain Gauche
https://gerbil.scheme.org/External Subdomain Gerbil
https://guile.scheme.org/External Subdomain Guile
https://jazz.scheme.org/External Subdomain JazzScheme
https://kawa.scheme.org/External Subdomain Kawa
https://loko.scheme.org/External Subdomain Loko
https://mit.scheme.org/External Subdomain MIT/GNU Scheme
https://mosh.scheme.org/External Subdomain Mosh
https://racket.scheme.org/External Subdomain Racket
https://s7.scheme.org/External Subdomain s7
https://sagittarius.scheme.org/External Subdomain Sagittarius
https://scm.scheme.org/External Subdomain SCM
https://stklos.scheme.org/External Subdomain STklos
https://ypsilon.scheme.org/External Subdomain Ypsilon
https://index.scheme.org/External Subdomain Index
https://containers.scheme.org/External Subdomain Containers
https://docs.scheme.org/External Subdomain Documentation
https://man.scheme.org/External Subdomain Manual pages
https://conservatory.scheme.org/External Subdomain Conservatory
https://files.scheme.org/External Subdomain Files
https://gitea.scheme.org/External Subdomain Gitea
https://go.scheme.org/External Subdomain Go Scheme
https://jenkins.scheme.org/External Subdomain Jenkins
https://registry.scheme.org/External Subdomain Registry
https://www.scheme.org/about/About Scheme.org
https://www.scheme.org/source/Source

Server configuration

HTTP redirects
(Critically important)
This page redirects to "https://www.scheme.org/"
HTTP header
(Important)
The HTML page should be transferred using GZip compression.
No X-Powered HTTP header is sent.
Performance
(Somewhat important)
The page response time of 0.55 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.
This page only loads 1 CSS files. That's ok.
This page does not require any JavaScript files.
The file size of the HTML document is fine (9 kB).

HTTP Response Header

NameValue
servernginx
dateFri, 06 Dec 2024 07:04:59 GMT
content-typetext/html
content-length9658
last-modifiedMon, 28 Oct 2024 21:31:47 GMT
connectionkeep-alive
etag"672002c3-25ba"
content-security-policydefault-src 'self'; style-src 'self' 'unsafe-inline'; script-src 'self' 'unsafe-inline'; upgrade-insecure-requests
feature-policyaccelerometer 'none'; ambient-light-sensor 'none'; autoplay 'none'; camera 'none'; display-capture 'none'; document-domain 'none'; encrypted-media 'none'; fullscreen 'none'; geolocation 'none'; gyroscope 'none'; layout-animations 'none'; magnetometer 'none'; microphone 'none'; midi 'none'; payment 'none'; picture-in-picture 'none'; speaker 'none'; usb 'none'; vibrate 'none'; vr 'none'
referrer-policyno-referrer
strict-transport-securitymax-age=31536000; includeSubDomains
x-content-type-optionsnosniff
x-frame-optionsSAMEORIGIN
x-permitted-cross-domain-policiesnone
x-xss-protection1; mode=block
accept-rangesbytes
statuscode200
http_versionHTTP/1.1

External factors

This website has excellent links from other websites.
This page has backlinks from 1,360 referring domains.
This page has 16,361 backlinks.
This page has backlinks from 865 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

www.scheme.org
The Scheme Programming Language
Scheme is a minimalist dialect of the Lisp family of programming languages. This is the official website for the Scheme language.

Most important keywords

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

KeywordResultRecheck
Scheme89%Check
Scheme Programming Language71%Check
Scheme community65%Check
language62%Check
Programming Language60%Check
programming58%Check
Programming Languages52%Check
languages46%Check
Lisp46%Check
family46%Check
Show more keywords and terms

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