- SEO Checker

Overview of the SEO Check
Meta information
Page quality
Page structure
Link structure
External factors
SEO Score
Response time
0.08 s
File size
47.90 kB
Media files
Number of links
59 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
This page contains 728 words. That's ok.
29% of the text are stop words.
Words from the H1 heading are used in the page content.
The page contains a listing, which indicates a good text layout.
16 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 14.1 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)
Empty bold or strong tags were found on 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
...e02df0bc-2537-4742-bde7-6519b44da2fa.pngPlone Conference - logoPlone Conference 2020
...f702a356-a605-43ab-80b8-b1ba71ac61b6.pngPlone Conference 2020 - A Sneak PeekPlone Conference 2020 - A Sneak Peek
...e8497143-ede2-4476-a5fe-277b4c49109c.pngPlone Conference 2020 - Submit a Talk and Get Your Tickets!Plone Conference 2020 - Submit a Talk and Get Your Tickets!
...9c968cb8-fa47-4e98-8f46-0a84e0068b52.pngZope 5.0 releasedZope 5.0 released
...57bf7f6c-df2d-4457-95e1-3c7aa0bdc738.pngPlone 5.2.2 releasedPlone 5.2.2 released
...fd06b09c-fd25-42ff-a0bd-ff7fb44f9f8d.pngPlone Conference 2020 - December 5 - 13 2020, Registration Open!Plone Conference 2020 - December 5 - 13 2020, Registration Open!
...s/sponsor-database/soliton/@@images/logoSoliton Consulting Systems
...sponsor-database/sixfeetup/@@images/logoSix Feet Up

Page structure

H1 heading
(Critically important)
Plone Conference Online 5 - 13 December 2020
The H1 heading is perfect.
Some headings occur twice on the page.
There are 34 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 Plone Conference Online 5 - 13 December 2020
H2 Get the latest Plone
H2 Latest news
H2 Related websites
H2 Upcoming events
H2 Community activity PyPI Plone Collective
H2 Sponsors
H3 Plone Conference 2020 - A Sneak Peek
H3 Plone Conference 2020 - Submit a Talk and Get Your Tickets!
H3 Zope 5.0 released
H3 Plone 5.2.2 released
H3 Plone Conference 2020 - December 5 - 13 2020, Registration Open!
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... Subdomain IMG-ALT Plone Conference - logo
A-TITLE Plone Conference 2020 - welcome! Subdomain Submit a talk and get your tickets!
A-TITLE Plone Conference 2020 - welcome! Plone 5.2 window External New features window External Older releases news
/news/2020/plone-conference-20...Plone Conference 2020 - A Sneak Peek Thanks to the Plone community we have a wonderful assortment of submitted talks - here are some highlights
IMG-ALT Plone Conference 2020 - A Sneak Peek
/news/2020/plone-conference-20...Plone Conference 2020 - Submit a Talk and Get Your Tickets! Plone Conference 2020 will be held in December 2020, so update your calendars, submit your talk p...
IMG-ALT Plone Conference 2020 - Submit a Talk and Get Your Tickets!
/news/2020/zope-5-0-releasedZope 5.0 released Few open source projects have been running for over 20 years, but Zope is one of them. Latest release adds support for Python 3.9 among oth...
IMG-ALT Zope 5.0 released
/news/2020/plone-5-2-2-releasedPlone 5.2.2 released A bugfix release with many fixes and package version upgrades
IMG-ALT Plone 5.2.2 released 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/conferences/plone-conf...Dec 06, 2020 Plone Conference 2020 - December 5 - 13 2020, Registration Open! Online
IMG-ALT Plone Conference 2020 - December 5 - 13 2020, Registration Open!
/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 0.08 seconds.
The file size of the HTML document is fine (48 kB).

HTTP Response Header

dateThu, 29 Oct 2020 16:36:02 GMT
set-cookie148 Characters
expiresSat, 1 Jan 2000 00:00:00 GMT
x-varnish65830931 68387777
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 9,709 referring domains.
This website has 44,947,362 backlinks.
This website has backlinks from 6,813 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

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

Plone Conference69%Check
Plone CMS65%Check
Plone Conference 202065%Check
Plone community61%Check
December 202060%Check
Plone Foundation57%Check

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