- SEO Checker

Overview of the SEO Check
Meta information
Page quality
Page structure
Link structure
External factors
SEO Score
Response time
0.09 s
File size
48.90 kB
Media files
Number of links
61 internal / 37 external

Task list of SEO Improvements

Meta specifications

(Critically important)
Plone CMS: Open Source Content Management — Plone: Enterprise Level CMS - Free and OpenSource - Community Driven - Secure
The page title should be shorter than 580 pixels. It is 1208 pixels long. Optimize title
There are no duplicate words in the title
Meta description
(Critically important)
The meta description is empty.
(Critically important)
There are no problems in accessing the website.
Canonical URL
There is a valid canonical link specified.
(Somewhat important)
Language detected in text: en
Language defined in HTML: en
Server location: Canada
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.
(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.
(Nice to have)
The doctype HTML 5 is set correctly.
The doctype is placed at first in the HTML code.
(Nice to have)
The favicon is linked correctly.

Meta tags

viewportwidth=device-width, initial-scale=1.0
DC.typeHomepage -
generatorPlone -
og:site_namePlone: Enterprise Level CMS - Free and OpenSource - Community Driven - Secure
og:titlePlone CMS: Open Source Content Management
Content-Typetext/html; charset=UTF-8

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Page quality

(Critically important)
Some words from the page title are not used within the pages content
Words from the H1 heading are not used in the page content.
This page contains 736 words. That's ok.
27.9% of the text are stop words.
The page contains a listing, which indicates a good text layout.
15 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 14.37 words is good.
(Critically important)
This website does not use a frameset.
Mobile optimization
(Somewhat important)
Multiple viewport tags are given. There should only be one.
This website loads 6 javascript files. This may affect the load time negatively.
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 15 tags for this page.
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)
This website has Google authorship information without an image.
(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
...047b9757-c739-4b46-9892-23b78e987fc8.pngMatthew Wilkes Publishes Book: Advanced Python DevelopmentMatthew Wilkes Publishes Book: Advanced Python Development
...e990732d-e883-4610-945b-6d3b54ff15a6.pngPlone Conference 2020, November 16 - 20 Will Be an Online Event!Plone Conference 2020, November 16 - 20 Will Be an Online Event!
...16cc472-1c65-48e2-9e49-af21481c5148.jpegPlone Foundation Launches Governance InitiativePlone Foundation Launches Governance Initiative
...3321d2a-4b99-4b5d-95ff-f5c4337380c9.jpegGreat Progress on Volto at the 2020 Beethoven SprintGreat Progress on Volto at the 2020 Beethoven Sprint
...f32102c-86be-4d99-be31-4c6d1b5699ad.jpegZope Autumn Sprint 2020Zope Autumn Sprint 2020
...603a5cad-d5bf-4bbd-a145-bd2202512ea8.pngPlone Conference 2020Plone Conference 2020
...s/sponsor-database/soliton/@@images/logoSoliton Consulting
...sponsor-database/sixfeetup/@@images/logoSix Feet Up
.../sponsor-database/jazkarta/@@images/logoJazkarta Systems

Page structure

H1 heading
(Critically important)
The Ultimate Enterprise CMS
The H1 heading is perfect.
Some headings occur twice on the page.
There are 35 headings on the page. The amount of headings should be in a more proper relation to the amount of text.

Heading structure

Heading levelContent
H1 The Ultimate Enterprise CMS
H2 Get the latest Plone
H2 Latest news
H2 Related websites
H2 Upcoming events
H2 Community activity PyPI Plone Collective
H2 Sponsors
H3 Matthew Wilkes Publishes Book: Advanced Python Development
H3 Plone Conference 2020, November 16 - 20 Will Be an Online Event!
H3 Plone Foundation Launches Governance Initiative
H3 Great Progress on Volto at the 2020 Beethoven Sprint
H3 Zope Autumn Sprint 2020
H3 Plone Conference 2020
H3 Downloads
H3 New issues
H3 Commits
H3 Blockers
H3 Pull requests
H3 Need review
H3 Plone Foundation
H3 Support
H3 Downloads Duplicate text
H3 Documentation
H3 Contribute
H3 Stay up to date
H4 Planet Plone
H4 Plone Conference
H4 Continuous Integration
H4 Plone on GitHub
H4 Available hotfixes
H4 Intro to Plone
H4 Documentation & Manuals
H4 Support & Discussion Forum
H4 Training Materials
H4 Login via GitHub
Anchor text is an URL
Some internal link anchor texts are too long.
Some anchor texts are used more than once.
The amount of internal links is ok.
All internal links don't have dynamic parameters.
There are too many external links (37) on this page.
LinkAttributesAnchor text
A-TITLE Conference
A-TITLE Conference Subdomain Documentation
A-TITLE Documentation Subdomain Training
A-TITLE Training Subdomain Forum
A-TITLE Discussion forum Subdomain Jobs
A-TITLE Plone Jobs
A-TITLE Plone logo started
A-TITLE Pleased to meet you! We are the Plone community and are organised in teams. Do you want to contribute? Foundation
A-TITLE The Plone Foundation exists to further the development, marketing, and legal affairs of Plone and the Plone community. Is Plone?
A-TITLE Plone is an open source content management system featuring ~20 years of stability wrapped in a modern, powerful user-centric package with unsurpassed functi...
A-TITLE Plone news.
A-TITLE Plone Events
A-TITLE Plone releases, add-ons, and security fixes
A-TITLE Individuals and organizations who support the Plone Foundation and community through financial and in-kind sponsorships
/related-websitesRelated websites
A-TITLE All about Plone's baked-in security Subdomain Plone Jobs
A-TITLE Are you looking for a Plone job, or are you looking to hire a Plone developer, designer, content editor, administrator? Summer of Code
/plone-vpat.pdf/viewPlone VPAT Accessibility Statement
A-TITLE Voluntary Product Accessibility Template (VPAT) statement; see for details
A-TITLE A listing of all Plone Conferences, including links to their websites and proposals News and Events
A-TITLE Recent news and upcoming events from, the home of the enterprise scale open source web content management system
/plone-open-gardenPlone Open Garden
A-TITLE The Plone Open Garden event, held in beautiful, sunny Sorrento, Italy
A-TITLE Plone chat channels
A-TITLE How to donate to the Plone Foundation Search... Features Find a provider Foundation Sponsors & Heroes Plone 5.2 window External New features window External Older releases news
/news/2020/matthew-wilkes-publ...Matthew Wilkes Publishes Book: Advanced Python Development The longtime member of the Plone community has written a must-have book for experienced developers
IMG-ALT Matthew Wilkes Publishes Book: Advanced Python Development
/news/2020/plone-conference-20...Plone Conference 2020, November 16 - 20 Will Be an Online Event! Plone Board has decided that this year's conference will be held 100% online - so join us fr...
IMG-ALT Plone Conference 2020, November 16 - 20 Will Be an Online Event!
/news/2020/plone-foundation-la...Plone Foundation Launches Governance Initiative Rethinking Plone's organizational structure and community processes
IMG-ALT Plone Foundation Launches Governance Initiative
/news/2020/great-progress-on-v...Great Progress on Volto at the 2020 Beethoven Sprint The Beethoven sprint at the end of May was held remotely but came to be a very successful one, focusing ...
IMG-ALT Great Progress on Volto at the 2020 Beethoven Sprint Subdomain Planet Plone This site aggregates Plone-related blogs from around the web.
A-TITLE Plone Conference The annual Plone conference is held in cities around the world and includes training classes, keynotes, presentations, demos, and sprints. V...
A-TITLE Subdomain Continuous Integration The Plone community adheres to extensive testing while developing software, and uses Continuous Integration. Here you can find the lat...
A-TITLE Plone on GitHub Plone is fully open source, and is free software under the GPLv2. On, you can find the many repositories that make up the Plone pr...
/security/hotfixesAvailable hotfixes There may be hotfixes applicable to your version of Plone. Always check the Plone Hotfix Page before production deployment.
A-TITLE Intro to Plone A high-level introduction to Plone and its features, for those new to Plone.
A-TITLE Subdomain Documentation & Manuals Community-maintained manual for the Plone content management system.
A-TITLE Subdomain Support & Discussion Forum The central place for discussions, questions and community communication.
A-TITLE Subdomain Training Materials The curriculum used for Plone training classes, including tutorials and walk-through examples; very useful as a self-guided learning resou...
/events/aggregatorUpcoming events
/events/community/++add++EventAdd an event
A-TITLE Add event
/events/sprints/++add++EventAdd a sprint
A-TITLE Add sprint
/events/aggregatorAll events
/events/community/zope-autumn-...Sep 28, 2020 Zope Autumn Sprint 2020 Online
IMG-ALT Zope Autumn Sprint 2020
/events/conferences/plone-conf...Nov 16, 2020 Plone Conference 2020 Online
IMG-ALT Plone Conference 2020
/ploneorg/MembersCommunity activity Subdomain PyPI Plone Collective
/ploneorg/sponsorsText duplicate Sponsors
A-TITLE Sponsors all our sponsors
/sponsors/become-a-sponsorBecome a sponsor Soliton Consulting Subdomain
/@@authomatic-handler/githubOkay, take me to GitHub duplicate Plone Foundation & Sponsors
/foundation/meetings/minutesMeeting minutes
/foundation/boardCurrent board
/foundation/membersFoundation members
/foundation/materials/foundati...Code of Conduct duplicate Support Commercial services room
/support/local-user-groupsLocal user groups Plone
/download/add-onsAll add-ons duplicate Security
/security/hotfixesCheck hotfixes Browse source Subdomain Text duplicate Documentation Subdomain Full documentation Subdomain Text duplicate Training Subdomain Installation Sites using Plone this site
/community/sign-me-upContribute bugs in Plone Report website issues
/community/sign-me-upContribute skills Subdomain Anchor Contribute code Newsletter signup Subdomain Planet Plone (blogs) @plone on Twitter PloneCMS on Facebook Plone LinkedIn group anchor text

Server configuration

HTTP redirects
(Critically important)
This website redirects to ""
HTTP header
No X-Powered HTTP header is sent.
This website uses GZip for compressed data transmission.
(Somewhat important)
This website loads 6 CSS files. This may affect the page load time negatively.
This website loads 6 javascript files. This may affect the load time negatively.
The page response time is excellent with 0.09 seconds.
The file size of the HTML document is fine (49 kB).

HTTP Response Header

dateSat, 19 Sep 2020 18:58:42 GMT
expiresSat, 1 Jan 2000 00:00:00 GMT
x-varnish22959017 32979391
via1.1 varnish (Varnish/5.2)
expect-ctmax-age=604800, report-uri=""

External factors

(Critically important)
This website is not classified "for adult only".
This website is not listed on the Shallalist.
This website is referenced by wikipedia.
This website has excellent links from other websites.
This website has backlinks from 10,477 referring domains.
This website has 48,143,992 backlinks.
This website has backlinks from 7,253 different ip addresses.
Facebook popularity
(Somewhat important)
This website has social activity like shares, comments or likes on facebook.
Listed on Webwiki
(Nice to have)
This website is listed on Webwiki.



# Define access-restrictions for robots/spiders

# By default we allow robots to access all areas of our site
# already accessible to anonymous users

User-agent: *

User-agent: Castle CMS Crawler 1.0
Disallow: /download/plone-add-ons/

User-agent: AhrefsBot
Disallow: /

# Add Googlebot-specific syntax extension to exclude forms
# that are repeated for each piece of content in the site
# the wildcard is only supported by Googlebot

User-Agent: Googlebot
Disallow: /*?
Disallow: /*atct_album_view$
Disallow: /*folder_factories$
Disallow: /*folder_summary_view$
Disallow: /*login_form$
Disallow: /*mail_password_form$
Disallow: /*search
Disallow: /*search_rss$
Disallow: /*sendto_form$
Disallow: /*summary_view$
Disallow: /*thumbnail_view$
Disallow: /*view$

Facebook popularity

Shares / Likes / Comments

Only the data for the given URL is shown. We cannot determine the social actions for a linked fan page.

Most important keywords

Seobility found the following keywords. You can check the keyword optimization of this page for each keyword.

Plone CMS61%Check
Plone community54%Check
Plone Foundation52%Check
Plone Conference52%Check
Enterprise Level CMS47%Check
Source Content Management Plone42%Check
CMS Open Source41%Check

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