Devcenter.heroku.com - SEO Checker

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Overview of the SEO Check
Meta information
93% 
Page quality
52% 
Page structure
79% 
Link structure
57% 
Server
100% 
External factors
100% 
SEO Score
Response time
0.39 s
File size
168.90 kB
Words
239
Media files
2
Number of links
63 internal / 40 external

Task list of SEO Improvements

Meta specifications

Title
(Critically important)
Heroku Dev Center
The page title is too short. (172 pixels of 580 max pixel length) Optimize title
There are no duplicate words in the title
Meta description
(Critically important)
Learn about building, deploying and managing your apps on Heroku.
The length of the meta description is perfect. (419 pixels out of 1000 max pixel length)
Crawlability
(Critically important)
There are no problems in accessing the website.
Canonical URL
(Important)
https://devcenter.heroku.com/
There is a valid canonical link specified.
Language
(Somewhat important)
Language detected in text: en
Language defined in HTML: en
Server location: Germany
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)
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)
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
viewportwidth=device-width, initial-scale=1
csrf-paramauthenticity_token
csrf-tokenX_gyeKi7YxZToy0B1mARjYLaeXsKFMbp2pS3NzX_k041zGSDMkL06AJXhwhmoXtz1pU1SEFPxC2VnvrCprwFCQ
descriptionLearn about building, deploying and managing your apps on Heroku.
google-site-verification8HRJpo1MsC3G8GZpZiEWM5yXbzFB8NKa38O6ZjuTc-w
slack-app-idA1QME020P
langen
og:image:secure_urlhttps://www.herokucdn.com/images/og.png
og:image:width1200
og:image:height630
X-UA-CompatibleIE=edge,chrome=1
charsetutf-8

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Page quality

Content
(Critically important)
There are only 239 words on this page. Use at least 250 words to provide useful information.
Words from the H1 heading are not used in the page content.
Only 1 paragraph/s was/were found on this page.
The average number of words per sentence of 8.67 words is low.
12.1% 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.
Frames
(Critically important)
This page does not use a frameset.
Mobile optimization
(Somewhat important)
A viewport "width=device-width, initial-scale=1" is provided.
At least one Apple touch icon is specified.
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
...5ff2d9112461ed28479bdd12b5b3dc84b209.svgHeroku Dev Center
...5ff2d9112461ed28479bdd12b5b3dc84b209.svgHeroku Dev Center

Page structure

H1 heading
(Critically important)
Learn about building, deploying, and managing your apps on Heroku.
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 Learn about building, deploying, and managing your apps on Heroku.
H3 Heroku Blog
H3 Heroku Essentials
H3 Recommended Features
H3 Debugging on Heroku
H4 Information & Support
H4 Language Reference
H4 Other Resources
H5 New to Heroku? Get started Sign up
Some anchor texts are used more than once.
There are 3 links with a trivial anchor text.
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 (40) on this page.

Found links on this page

LinkAttributesAnchor text
https://devcenter.heroku.com/Anchor Skip Navigation
https://devcenter.heroku.com/Dev Center
IMG-ALT Heroku Dev Center
/startGet Started
/categories/referenceDocumentation
/changelogChangelog
/searchSearch
https://devcenter.heroku.com/Text duplicate Dev Center
IMG-ALT Heroku Dev Center
/startText duplicate Get Started
/articles/getting-started-with...Node.js
/articles/getting-started-with...Ruby on Rails
/articles/getting-started-with...Ruby
/articles/getting-started-with...Python
/articles/getting-started-with...Java
/articles/getting-started-with...PHP
/articles/getting-started-with-goTrivial anchor text
Go
/articles/getting-started-with...Scala
/articles/getting-started-with...Clojure
/articles/getting-started-with....NET
/categories/referenceText duplicate Documentation
/changelogText duplicate Changelog
https://www.heroku.com/External Subdomain Home
https://elements.heroku.com/External Subdomain Elements
https://www.heroku.com/productsExternal Subdomain Products
https://www.heroku.com/pricingExternal Subdomain Pricing
https://www.heroku.com/careersExternal Subdomain Careers
https://help.heroku.com/External Subdomain Help
https://status.heroku.com/External Subdomain Status
https://www.heroku.com/eventsExternal Subdomain Events
https://www.heroku.com/podcastsExternal Subdomain Podcasts
https://www.heroku.com/complianceExternal Subdomain Compliance Center
https://blog.heroku.com/External Subdomain Heroku Blog
https://blog.heroku.com/External Subdomain Visit Blog
/login?back_to=/Nofollow Log in
https://signup.heroku.com/External Subdomain Sign up
https://devcenter.heroku.com/ja日本語に切り替える
/categories/nodejs-supportText duplicate Node.js
A-TITLE Node.js
/categories/ruby-supportText duplicate Ruby
A-TITLE Ruby
/categories/python-supportText duplicate Python
A-TITLE Python
/categories/java-supportText duplicate Java
A-TITLE Java
/categories/php-supportText duplicate PHP
A-TITLE PHP
/categories/go-supportText duplicate Trivial anchor text
Go
A-TITLE Go
/categories/scala-supportText duplicate Scala
A-TITLE Scala
/categories/clojure-supportText duplicate Clojure
A-TITLE Clojure
/categories/dotnet-supportText duplicate .NET
A-TITLE .NET
/startGet started
https://signup.heroku.com/dcExternal Subdomain Text duplicate Sign up
/startText duplicate Get Started
/articles/heroku-cliThe Heroku CLI
/articles/gitDeploying with Git
/articles/procfileThe Procfile
/articles/config-varsConfiguration and Config Vars
/articles/custom-domainsCustom Domain Names for Apps
/articles/heroku-postgresqlHeroku Postgres
/articles/heroku-teamsHeroku Teams
/articles/pipelinesPipelines
/articles/heroku-ciHeroku CI
/articles/loggingLogging
/articles/error-codesHeroku Error Codes
/articles/metricsApplication Metrics
/articles/language-runtime-met...Language Runtime Metrics
/articles/production-checkProduction Check
/startGetting Started
/categories/referenceText duplicate Documentation
/changelogText duplicate Changelog
https://www.heroku.com/complianceExternal Subdomain Text duplicate Compliance Center
https://www.heroku.com/trainin...External Subdomain Training & Education
https://blog.heroku.com/External Subdomain Blog
/articles/support-channelsSupport Channels
https://status.heroku.com/External Subdomain Text duplicate Status
/categories/nodejs-supportText duplicate Node.js
/categories/ruby-supportText duplicate Ruby
/categories/java-supportText duplicate Java
/categories/php-supportText duplicate PHP
/categories/python-supportText duplicate Python
/categories/go-supportText duplicate Trivial anchor text
Go
/categories/scala-supportText duplicate Scala
/categories/clojure-supportText duplicate Clojure
/categories/dotnet-supportText duplicate .NET
https://www.heroku.com/careersExternal Subdomain Text duplicate Careers
https://elements.heroku.com/External Subdomain Text duplicate Elements
https://www.heroku.com/productsExternal Subdomain Text duplicate Products
https://www.heroku.com/pricingExternal Subdomain Text duplicate Pricing
/articles/feedNew window Subdomain RSS
/articles/feedNew window Subdomain Dev Center Articles
/changelog/feedNew window Subdomain Dev Center Changelog
https://blog.heroku.com/feedNew window External Subdomain Text duplicate Heroku Blog
https://blog.heroku.com/news/feedNew window External Subdomain Heroku News Blog
https://blog.heroku.com/engine...New window External Subdomain Heroku Engineering Blog
https://twitter.com/herokudevc...New window External Twitter
https://twitter.com/herokudevc...New window External Text duplicate Dev Center Articles
https://twitter.com/herokuchan...New window External Text duplicate Dev Center Changelog
https://twitter.com/herokuNew window External Heroku
https://twitter.com/herokustatusNew window External Heroku Status
https://github.com/herokuNew window External Github
https://www.linkedin.com/compa...New window External Subdomain LinkedIn
https://www.heroku.com/External Subdomain heroku.com
https://www.salesforce.com/com...Nofollow External Subdomain Legal
https://www.salesforce.com/com...Nofollow External Subdomain Terms of Service
https://www.salesforce.com/com...Nofollow External Subdomain Privacy Information
https://www.salesforce.com/com...Nofollow External Subdomain Responsible Disclosure
https://trust.salesforce.com/en/Nofollow External Subdomain Trust
https://www.salesforce.com/for...Nofollow External Subdomain Contact
https://www.salesforce.com/for...Nofollow External Subdomain Your Privacy Choices

Server configuration

HTTP redirects
(Critically important)
This page redirects to "https://devcenter.heroku.com/"
HTTP header
(Important)
No X-Powered HTTP header is sent.
The web server transmits the web page (HTML) in compressed form.
Performance
(Somewhat important)
The page response time is excellent with 0.39 seconds.
The file size of the HTML document is fine (169 kB).

HTTP Response Header

NameValue
content-typetext/html; charset=utf-8
cache-controlmax-age=0, private, must-revalidate
dateThu, 14 Aug 2025 21:03:10 GMT
referrer-policystrict-origin-when-cross-origin
set-cookie389 Characters
strict-transport-securitymax-age=63072000; includeSubDomains
via1.1 spaces-router (4a96ce07184f), 1.1 3f695203fbeb95037134ac09f46add98.cloudfront.net (CloudFront)
x-content-type-optionsnosniff
x-download-optionsnoopen
x-frame-optionsSAMEORIGIN
x-permitted-cross-domain-policiesnone
x-request-id6f24922d-2a11-6d6f-5342-914c80b547be
x-runtime0.025515
x-xss-protection1; mode=block
content-encodinggzip
etagW/"d96d72f353584b55d12b57d3c3e71b02"
varyaccept-encoding
x-cacheHit from cloudfront
x-amz-cf-popFRA60-P11
x-amz-cf-id6AtjYT4ZTD2Weo9a3_jrn2zwqnlsGA7czr8EzA3zkbQTliw52hzEcQ==
age558
statuscode200
http_versionHTTP/2

External factors

This page is referenced by wikipedia.
This website has excellent links from other websites.
This page has backlinks from 536 referring domains.
This page has 2,985 backlinks.
This page has backlinks from 345 different ip addresses.

Links from Wikipedia

You can find more links using Wikipedia search

Robots.txt

User-Agent: *
Sitemap: https://devcenter.heroku.com/sitemap.xml

Disallow: /auth/
Disallow: /search

Similar sites

Search preview

devcenter.heroku.com
Heroku Dev Center
Learn about building, deploying and managing your apps on Heroku.

Most important keywords

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

KeywordResultRecheck
Heroku88%Check
Heroku Dev72%Check
Heroku Dev Center67%Check
deploying62%Check
apps62%Check
Learn62%Check
building62%Check
managing62%Check
Center59%Check
Dev59%Check
Show more keywords and terms

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