Crystal-lang.org - SEO Checker

Overview of the SEO Check
Meta information
80% 
Page quality
76% 
Page structure
74% 
Link structure
90% 
Server
100% 
External factors
100% 
SEO Score
Response time
0.23 s
File size
46.60 kB
Words
908
Media files
16
Number of links
67 internal / 27 external

Task list of SEO Improvements

Meta specifications

Title
(Critically important)
The Crystal Programming Language
The length of the page title is perfect. (325 pixels out of 580 max pixel length)
There are no duplicate words in the title
Meta description
(Critically important)
Crystal is a general-purpose, object-oriented programming language. With syntax inspired by Ruby, it’s a compiled language with static type-checking. Types are resolved by an advanced type inference algorithm.
The meta description is too long: 1303 pixels from max. 1000 pixels. Optimize description
Crawlability
(Critically important)
There are no problems in accessing the website.
Canonical URL
(Important)
https://crystal-lang.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)
The favicon is linked correctly.

Meta tags

NameValue
generatorJekyll v4.3.3
descriptionCrystal is a general-purpose, object-oriented programming language. With syntax inspired by Ruby, it’s a compiled language with static type-checking. Types are resolved by an advanced type inference algorithm.
viewportwidth=device-width, initial-scale=1.0
langen
twitter:cardsummary
twitter:site@CrystalLanguage
twitter:titleCrystal
twitter:image/assets/banner.webp
og:titleCrystal
og:localeen_US
og:descriptionCrystal is a general-purpose, object-oriented programming language. With syntax inspired by Ruby, it’s a compiled language with static type-checking. Types are resolved by an advanced type inference algorithm.
og:urlhttps://crystal-lang.org/
og:site_nameThe Crystal Programming Language
og:typewebsite
og:image/assets/banner.webp
charsetutf-8

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Page quality

Content
(Critically important)
This page contains 908 words. That's ok.
27.2% 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.
11 paragraphs were found on this page.
The text content is perfect.
No placeholders texts or images were found.
There are no duplicates on the site.
The average number of words per sentence of 17.93 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=1.0" is provided.
Bold and strong tags
(Somewhat important)
The usage of strong and bold tags is perfect. We recommend the use of up to 18 tags for this page.
Image SEO
(Somewhat important)
16 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
/assets/authors/beta-ziliani.jpgNo alt attribute provided
/assets/authors/straight-shoota.jpgNo alt attribute provided
/assets/authors/beta-ziliani.jpgNo alt attribute provided
/assets/authors/straight-shoota.jpgNo alt attribute provided
/assets/authors/beta-ziliani.jpgNo alt attribute provided
/assets/icons/favorite.svgNo alt attribute provided
/assets/icons/domain.svgNo alt attribute provided
/assets/icons/shuttle.svgNo alt attribute provided
/assets/sponsors/84.pngNo alt attribute provided
/assets/manas-orange.svgNo alt attribute provided
/assets/sponsors/empty.svgNo alt attribute provided
/assets/sponsors/woa.pngNo alt attribute provided
/assets/sponsors/placeos.pngNo alt attribute provided
...ets/blog/2024-05-22-lavinmq-terminal.pngNo alt attribute provided
/assets/blog/2024-02-02-bright-banner.jpgNo alt attribute provided
/assets/blog/2023-01-24-placeos.pngNo alt attribute provided

Page structure

H1 heading
(Critically important)
Crystal
The H1 heading consists of only one word. There should be more information given.
The H1 heading is too short (7 characters). It should be at least 20 Characters long.
Headings
(Important)
The heading structure is perfect.

Heading structure

Heading levelContent
H1 Crystal
H2 Examples
H2 News
H2 Top Sponsors
H2 Success stories
H3 Batteries included
H3 Type system
H3 Null reference checks
H3 Syntax
H3 Concurrency Model
H3 C-bindings
H3 Macros
H3 Dependencies
H3 Help
H3 News feeds
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 (27) on this page.
LinkAttributesAnchor text
https://crystal-lang.org/blog/Blog
https://crystal-lang.org/installInstall
/sponsors/Sponsors
/community/Community
/reference/Docs
https://github.com/crystal-lan...External GitHub Repository
A-TITLE Crystal repository on GitHub
https://forum.crystal-lang.org/External Subdomain Forum
A-TITLE Crystal Forum
https://crystal-lang.org/feed.xmlRSS-Newsfeed
A-TITLE Newsfeed for Crystal blog posts and releases
/2024/05/31/1.12.2-released/Latest release: 1.12.2
https://crystal-lang.org/install/Text duplicate Install
/reference/getting_started/Learn
https://play.crystal-lang.org/External Subdomain Anchor Try Online
https://crystal-lang.org/Anchor Rich stdlib
https://crystal-lang.org/Anchor Typing
https://crystal-lang.org/Anchor Nil checking
https://crystal-lang.org/Anchor Syntax
https://crystal-lang.org/Anchor Concurrency
https://crystal-lang.org/Anchor C-bindings
https://crystal-lang.org/Anchor Macros
https://crystal-lang.org/Anchor Shards
https://crystal-lang.org/api/Check the API docs
/reference/syntax_and_semantic...More about the type system
https://www.infoq.com/presenta...External Subdomain billion-dollar mistake
/reference/getting_started/Start learning Crystal
https://www.wikiwand.com/en/Co...External Subdomain CSP
/reference/guides/concurrency....Read more about concurrency
/reference/syntax_and_semantic...Learn how to bind to C libraries
/reference/syntax_and_semantic...Read more about Macros
https://github.com/crystal-lan...External Read more about Shards
/2024/05/22/lavinmq-understand...LavinMQ: Understanding code to get the best performance
/success-stories/Success
/2024/03/27/website-relaunch/Website Relaunch
/blog/project/Project
/blog/tags/website/#website
/2024/03/25/new-sponsoring-tiers/New sponsoring tiers
/blog/project/Text duplicate Project
/blog/tags/sponsors/#sponsors
/2024/02/28/the-return-of-the-...The return of the Julien
/blog/project/Text duplicate Project
/blog/tags/people/#people
/blog/tags/core-team/#core-team
https://crystal-lang.org/blog/More news
https://crystal-lang.org/feed.xmlFeed
/releases/Release notes
https://opencollective.com/cry...External Contribute
/sponsors/Top Sponsors
https://www.84codes.com/Nofollow External Subdomain 84codes
https://manas.tech/Nofollow External Manas.Tech
https://arbales.me/Nofollow External Austin Robert Bales
https://developer.arm.com/solu...Nofollow External Subdomain Works on Arm
https://place.technology/Nofollow External PlaceOS
/2024/05/22/lavinmq-understand...Text duplicate LavinMQ: Understanding code to get the best performance
/2024/02/02/crystal-the-lingua...Crystal: the lingua franca at Bright
/2023/01/24/placeos-environments/Automating smart buildings with Crystal
/success-stories/More success stories
/used_in_prod/Used in production
https://github.com/crystal-lan...External Edit on GitHub
https://github.com/crystal-lan...External file an issue
https://crystal-lang.org/Home
https://crystal-lang.org/blog/Text duplicate Blog
https://crystal-lang.org/install/Text duplicate Install
/releases/Releases
/success-stories/Success stories
https://crystal-lang.org/sitemap/Sitemap
https://crystal-lang.org/docsDocumentation
/reference/getting_started/Getting Started
/reference/tutorialsTutorials
https://crystal-lang.org/apiAPI Docs
/reference/syntax_and_semanticsSpecification
/reference/guidesGuides
https://crystal-lang.org/media/Media
/communityText duplicate Community
https://crystal-lang.org/team/Team
/sponsors/Text duplicate Sponsors
/community/Events
/used_in_prod/Text duplicate Used in production
/community/governance/Governance
https://forum.crystal-lang.org/External Subdomain Crystal forum
A-TITLE Crystal Forum
https://discord.gg/YS7YvQyExternal Crystal Discord
https://www.reddit.com/r/cryst...External Subdomain r/crystal_programming
A-TITLE Crystal Programming on Reddit
https://web.libera.chat/External Subdomain Anchor web
http://irclog.crystal-lang.org/External Subdomain logs
https://matrix.to/External Anchor Matrix: #crystal-lang_crystal:gitter.im
https://gitter.im/crystal-lang...External Text duplicate web
https://crystal-lang.org/feed.xmlBlog posts and releases
/releases/feed.xmlText duplicate Releases
/newsletter/feedNewsletter
/newsletternewsletter
https://github.com/crystal-lan...External GitHub
A-TITLE Crystal repository on GitHub
https://www.youtube.com/@Cryst...External Subdomain YouTube
A-TITLE Crystal channel on YouTube
https://fosstodon.org/@Crystal...External Mastodon
https://twitter.com/CrystalLan...External Twitter
https://www.apache.org/license...External Subdomain Apache License, Version 2.0
https://manas.tech/External Manas

Server configuration

HTTP redirects
(Critically important)
This page redirects to "https://crystal-lang.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 is excellent with 0.23 seconds.
The file size of the HTML document is fine (47 kB).

HTTP Response Header

NameValue
content-typetext/html
last-modifiedWed, 05 Jun 2024 18:03:32 GMT
serverAmazonS3
content-encodinggzip
dateTue, 11 Jun 2024 06:37:17 GMT
etagW/"2c09bd58d4c091c2936fcf1a54c224e6"
varyAccept-Encoding
x-cacheRefreshHit from cloudfront
via1.1 0341da327f4c4c49034aa07ebeeab1f0.cloudfront.net (CloudFront)
x-amz-cf-popFRA56-P5
x-amz-cf-idbZtpimU9ZJ08XHwUXL4EsqC2OEgkUjfyW30mZEjgNS_oa7uiLaNESw==
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 2,369 referring domains.
This page has 241,058 backlinks.
This page has backlinks from 1,237 different ip addresses.
Facebook popularity
(Somewhat important)
The page has 700 shares and comments on Facebook.

Search preview

crystal-lang.org
The Crystal Programming Language
Crystal is a general-purpose, object-oriented programming language. With syntax inspired by Ruby, it’s a compiled language with static type-checking. Types are resolved by an advanced type inference algorithm.

Most important keywords

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

KeywordResultRecheck
Crystal85%Check
Crystal Programming Language63%Check
language58%Check
programming54%Check
Programming Language54%Check
type50%Check
Syntax50%Check
crystal-lang46%Check
Ruby46%Check
inference46%Check

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