Gnu.org - SEO Checker

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Overview of the SEO Check
Meta information
90% 
Page quality
86% 
Page structure
79% 
Link structure
71% 
Server
89% 
External factors
100% 
SEO Score
Response time
0.61 s
File size
33.30 kB
Words
1065
Media files
19
Number of links
94 internal / 45 external

Task list of SEO Improvements

Meta specifications

Title
(Critically important)
The GNU Operating System and the Free Software Movement
The length of the page title is perfect. (557 pixels out of 580 max pixel length)
There are no duplicate words in the title
Meta description
(Critically important)
Since 1983, developing the free Unix style operating system GNU, so that computer users can have the freedom to share and improve the software they use.
The length of the meta description is perfect. (965 pixels out of 1000 max pixel length)
Crawlability
(Critically important)
There are no problems in accessing the website.
Canonical URL
(Important)
No canonical link is 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)
The alternate link to the page itself is missing.
An alternate link incorrectly contains an URL with a relative path.
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
ICBM42.355469,-71.058627
keywordsGNU, FSF, Free Software Foundation, Linux, Emacs, GCC, Unix, Free Software, Libre Software, Operating System, GNU Kernel, GNU Hurd
descriptionSince 1983, developing the free Unix style operating system GNU, so that computer users can have the freedom to share and improve the software they use.
viewportwidth=device-width, initial-scale=1
langen
content-typetext/html; charset=UTF-8

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Page quality

Content
(Critically important)
This page contains 1065 words. That's ok.
36.7% 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.
24 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 15.7 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)
Some tags are too long. With 112 characters this one is longer than 70 characters:
"free software means the users have the freedom to run, copy, distribute, study, change and improve the..."
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)
This page uses Google authorship information without an image.
HTTPS
(Somewhat important)
The HTTPS protocol for secure data transmission is not used.

Media list

URLAlt attributeTitle
/graphics/heckert_gnu.transp.small.png [A GNU head] 
/graphics/icons/search.png [Search www.gnu.org] 
/graphics/icons/translations.png [Other languages] 
/distros/screenshots/dragora-tde-thumb.jpg [Screenshot of Dragora 3.0-beta2 with TDE desktop] 
...ros/screenshots/guix1.4-plasma-thumb.jpg [Screenshot of Guix 1.4.0 with Plasma desktop] 
/distros/screenshots/hyperbola-i3-thumb.jpg [Screenshot of Hyperbola with i3 window manager] 
.../screenshots/parabola2020-lxde-thumb.jpg [Screenshot of Parabola with LXDE desktop] 
...os/screenshots/pureos10-gnome3-thumb.jpg [Screenshot of PureOS 10.3 with GNOME 3 desktop] 
...os/screenshots/trisquel11-mate-thumb.jpg [Screenshot of Trisquel 11 with MATE desktop] 
/distros/screenshots/dragora-tde.jpg [Screenshot of Dragora 3.0-beta2 with TDE desktop] 
...guix.gnu.org/static/media/img/plasma.png [Screenshot of Guix 1.4.0 with Plasma desktop] 
/distros/screenshots/hyperbola-i3.png [Screenshot of Hyperbola with i3 window manager] 
/distros/screenshots/parabola2020-lxde.jpg [Screenshot of Parabola with LXDE desktop] 
...ommons/4/44/Pureos-desktop-byzantium.jpg [Screenshot of PureOS 10.3 with GNOME 3 desktop] 
...iles/screenshots/aramo-libreoffice_0.jpg [Screenshot of Trisquel 11 with MATE desktop] 
/graphics/snowflake-purple.pngHelp people bypass censorship. Run Snowflake!
http://www.gnu.org/feed-icon-10x10.pngRSS Feed
/graphics/fsf-logo-notext-small.png [FSF logo] 
Video URLWidthHeight
...eedom/videos/escape-to-freedom-720p.webm512288

Page structure

H1 heading
(Critically important)
There is no H1 heading specified.
Headings
(Important)
The structure of headings is missing one or more levels. Do not skip heading levels.

Heading structure

Heading levelContent
H2 What is GNU?
H2 What is the Free Software Movement?
H2 What is Free Software?
H2 More about GNU
H3 Planet GNU RSS Feed
H3 Take Action
H4 Bc
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 (45) on this page.

Found links on this page

LinkAttributesAnchor text
http://www.gnu.org/Anchor Skip to main text
http://www.fsf.org/fssExternal Subdomain Free Software Supporter
https://www.fsf.org/associate/...External Subdomain JOIN THE FSF
http://www.gnu.org/GNU Operating System
IMG-ALT [A GNU head]
http://www.gnu.org/Anchor Free Software Foundation
/cgi-bin/estseek.cgiSubdomain IMG-ALT [Search www.gnu.org]
http://www.gnu.org/Anchor IMG-ALT [Other languages]
http://www.gnu.org/Anchor Site navigation
A-TITLE More...
http://www.gnu.org/Anchor Skip
http://www.gnu.org/gnu/gnu.htmlABOUT GNU
/philosophy/philosophy.htmlPHILOSOPHY
/licenses/licenses.htmlLICENSES
/education/education.htmlEDUCATION
/software/software.htmlSOFTWARE
/distros/distros.htmlDISTROS
http://www.gnu.org/doc/doc.htmlDOCS
/proprietary/proprietary.htmlMALWARE
http://www.gnu.org/help/help.htmlHELP GNU
/audio-video/audio-video.htmlAUDIO & VIDEO
/graphics/graphics.htmlGNU ART
http://www.gnu.org/fun/humor.htmlFUN
/people/people.htmlGNU'S WHO?
http://directory.fsf.org/External Subdomain SOFTWARE DIRECTORY
https://h-node.org/External HARDWARE
/server/sitemap.htmlSITEMAP
https://www.fsf.org/blogs/comm...External Subdomain Escape to Freedom: A video from the FSF
/philosophy/free-sw.htmlfree software
/distros/free-distros.htmlinstallable versions of GNU
http://www.gnu.org/Anchor More about GNU below
/distros/free-distros.htmlTry GNU/Linux
http://www.gnu.org/Anchor [Skip screenshots]
http://www.gnu.org/Anchor Dragora / TDE
IMG-ALT [Screenshot of Dragora 3.0-beta2 with TDE desktop]
http://www.gnu.org/Anchor Guix / Plasma
IMG-ALT [Screenshot of Guix 1.4.0 with Plasma desktop]
http://www.gnu.org/Anchor Hyperbola / i3
IMG-ALT [Screenshot of Hyperbola with i3 window manager]
http://www.gnu.org/Anchor Parabola / LXDE
IMG-ALT [Screenshot of Parabola with LXDE desktop]
http://www.gnu.org/Anchor PureOS / GNOME3
IMG-ALT [Screenshot of PureOS 10.3 with GNOME 3 desktop]
http://www.gnu.org/Anchor Trisquel / MATE
IMG-ALT [Screenshot of Trisquel 11 with MATE desktop]
http://www.gnu.org/Anchor ×
A-TITLE close
/distros/screenshots/dragora-t...IMG-ALT [Screenshot of Dragora 3.0-beta2 with TDE desktop]
https://dragora.org/index.htmlExternal Dragora 3.0-beta2
https://www.trinitydesktop.org/External Subdomain TDE
http://www.gnu.org/Anchor Text duplicate ×
A-TITLE close
https://guix.gnu.org/static/me...External Subdomain IMG-ALT [Screenshot of Guix 1.4.0 with Plasma desktop]
http://www.gnu.org/software/guix/Guix 1.4.0
https://kde.org/plasma-desktop/External Plasma
http://www.gnu.org/Anchor Text duplicate ×
A-TITLE close
/distros/screenshots/hyperbola...IMG-ALT [Screenshot of Hyperbola with i3 window manager]
https://www.hyperbola.info/External Subdomain Hyperbola
https://i3wm.org/External i3 window manager
http://www.gnu.org/Anchor Text duplicate ×
A-TITLE close
/distros/screenshots/parabola2...IMG-ALT [Screenshot of Parabola with LXDE desktop]
https://www.parabola.nu/External Subdomain Parabola
http://lxde.sourceforge.net/ab...External Subdomain LXDE desktop
http://www.gnu.org/Anchor Text duplicate ×
A-TITLE close
https://upload.wikimedia.org/w...External Subdomain IMG-ALT [Screenshot of PureOS 10.3 with GNOME 3 desktop]
https://www.pureos.net/External Subdomain PureOS 10.3
https://www.gnome.org/External Subdomain GNOME 3
http://www.gnu.org/Anchor Text duplicate ×
A-TITLE close
https://trisquel.info/files/sc...External IMG-ALT [Screenshot of Trisquel 11 with MATE desktop]
https://trisquel.info/External Trisquel 11
https://mate-desktop.org/External MATE
https://www.libreoffice.org/External Subdomain LibreOffice
https://directory.fsf.org/wiki...External Subdomain Try parts of GNU
/audio-video/philosophy-record...the video explanation
/philosophy/free-sw.htmlfour essential freedoms
/philosophy/free-software-even...even more important now
https://www.fsf.org/External Subdomain the Free Software Foundation's web site
http://www.gnu.org/helpways you can help
http://www.gnu.org/software/GNU packages
/pronunciation/pronunciation.html“GNU” is pronounced g'noo
/gnu/linux-and-gnu.htmlGNU/Linux operating system
/gnu/gnu-linux-faq.htmlcall it “Linux” by mistake
/software/hurd/hurd.htmlGNU Hurd
http://www.gnu.org/gnu/gnu.htmlMore information
https://snowflake.torproject.org/External Subdomain IMG-ALT Help people bypass censorship. Run Snowflake!
/philosophy/kind-communication...GNU Kind Communications Guidelines
https://www.ushistory.org/fran...External Subdomain Benjamin Franklin, Autobiography
https://planet.gnu.org/External Subdomain Planet GNU
https://planet.gnu.org/rss20.xmlExternal Subdomain IMG-ALT RSS Feed
https://savannah.gnu.org/news/...External Subdomain Welcoming our new member - LesBoys
https://kelar.org/~bandali/202...External Mirroring Protesilaos' videos to Internet Archive
https://protesilaos.com/External Protesilaos
http://www.fsf.org/events/fsf4...External Subdomain FSF40 Hackathon
https://www.fsf.org/campaignsExternal Subdomain Support current FSF campaigns
https://my.fsf.org/give-studen...External Subdomain Sign the petition for freedom in the classroom
https://libreplanet.org/wiki/G...External Join the Copilot Watch Group
/server/takeaction.htmlMore action items
/help/priority-projects.htmlGNU high priority enhancement projects
/help/music-subtraction.htmlFree program to subtract background music
http://www.fsf.org/campaigns/p...External Subdomain long-term high priority projects
/server/takeaction.htmlmaintain a GNU package
/software/cfengine/cfengine
/software/halifax/halifax
/software/quickthreads/quickthreads
/software/guile-sdl/guile-sdl
/software/superopt/superopt
/software/aspell/aspell
/software/bison/bison
/software/gnuae/gnuae
/software/gnubik/gnubik
/software/metaexchange/metaexchange
/software/powerguru/powerguru
/software/xboard/xboard
/software/recent-releases.htmlRecent GNU releases
/manual/blurbs.htmlShort descriptions for all GNU packages
http://www.gnu.org/software/bc/Bc
/manual/manual.htmldoc
http://www.gnu.org/Anchor ▲
http://www.gnu.org/Anchor BACK TO TOP
/server/select-language.html?c...Nofollow Set language
http://www.gnu.org/home.en.htmlEnglish
http://www.gnu.org/home.de.htmlDeutsch
http://www.gnu.org/home.el.htmlελληνικά
http://www.gnu.org/home.es.htmlespañol
http://www.gnu.org/home.fa.htmlفارسی
http://www.gnu.org/home.fr.htmlfrançais
http://www.gnu.org/home.it.htmlitaliano
http://www.gnu.org/home.ja.html日本語
http://www.gnu.org/home.nl.htmlNederlands
/home.pt-br.htmlportuguês
http://www.gnu.org/home.ru.htmlрусский
http://www.gnu.org/home.sq.htmlShqip
http://www.gnu.org/home.tr.htmlTürkçe
/home.zh-cn.html简体中文
/home.zh-tw.html繁體中文
http://www.gnu.org/Anchor BACK TO TOP ▲
http://www.fsf.org/External Subdomain IMG-ALT [FSF logo]
http://www.fsf.org/associate/s...External Subdomain JOIN
http://donate.fsf.org/External Subdomain DONATE
http://shop.fsf.org/External Subdomain SHOP
https://www.fsf.org/External Subdomain FSF
https://fsfe.org/External Europe
https://www.fsfla.org/ikiwiki/External Subdomain Latin America
https://fsf.org.in/External India
http://www.gnu.org/contact/other ways to contact
/server/standards/README.trans...Translations README
http://www.fsf.org/External Subdomain Text duplicate Free Software Foundation
http://creativecommons.org/lic...External Creative Commons Attribution-NoDerivatives 4.0 International License
http://www.fsf.org/about/dmca-...External Subdomain Copyright Infringement Notification

Server configuration

HTTP redirects
(Critically important)
This page redirects to "http://www.gnu.org/"
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 of 0.61 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 2 CSS files. That's ok.
This page does not require any JavaScript files.
The file size of the HTML document is fine (33 kB).

HTTP Response Header

NameValue
dateTue, 29 Jul 2025 18:00:30 GMT
serverApache
content-locationhome.html
varynegotiate,accept-language,Accept-Encoding
tcnchoice
strict-transport-securitymax-age=63072000; includeSubDomains; preload
x-frame-optionssameorigin
x-content-type-optionsnosniff
access-control-allow-origin(null)
accept-rangesbytes
cache-controlmax-age=0
expiresTue, 29 Jul 2025 18:00:30 GMT
content-encodinggzip
content-length10449
content-typetext/html
content-languageen
statuscode200
http_versionHTTP/1.1

External factors

This page is referenced by wikipedia.
This website has excellent links from other websites.
This page has backlinks from 60,312 referring domains.
This page has 9,345,702 backlinks.
This page has backlinks from 29,415 different ip addresses.

Links from Wikipedia

You can find more links using Wikipedia search

Robots.txt

# robots.txt for http://www.gnu.org/

User-agent: *
Crawl-delay: 4
Disallow: */CVS/
Disallow: */po/
Disallow: */workshop/
Disallow: /cgi-bin/
Disallow: /copyleft/
Disallow: /gnu.css
Disallow: /gnusearch/
Disallow: /norobotsnorhumansshouldevervisithispage/
Disallow: /prep/gnumaint/
Disallow: /prep/wrappers-and-scripts/
Disallow: /private/
Disallow: /rss/
Disallow: /savannah-checkouts/
Disallow: /screenshots/
Disallow: /server/banners/
Disallow: /server/body-include*
Disallow: /server/bottom-notes*
Disallow: /server/footer*
Disallow: /server/fs-gang*
Disallow: /server/generic*
Disallow: /server/gnun/
Disallow: /server/head-include*
Disallow: /server/header*
Disallow: /server/html5-head-include*
Disallow: /server/html5-header*
Disallow: /server/include-file-list*
Disallow: /server/outdated*
Disallow: /server/select-language.html
Disallow: /server/source/
Disallow: /server/staging/
Disallow: /server/top-addendum*
Disallow: /server/trans-map.html
Disallow: /server/whatsnew_translations.xml
Disallow: /software/gnun/linc/
Disallow: /software/gnun/proofread/
Disallow: /software/gnun/reports/
Disallow: /software/gnun/test/
Disallow: /usenet/
Sitemap: http://www.gnu.org/sitemap.xml

# Majestic - SEO
User-agent: MJ12bot
Disallow: /

# DataForSeo - SEO
User-agent: DataForSeoBot
Disallow: /

# webmeup - SEO
User-agent: BLEXBot
Disallow: /

# Ahrefs - SEO
User-agent: AhrefsBot
Disallow: /

# babbar - SEO
User-agent: barkrowler
Disallow: /

# Screamingfrog - SEO
User-agent: Screaming Frog SEO Spider
Disallow: /

# Seozoom - SEO
User-Agent: ZoomBot
Disallow: /

# Brandwatch - SEO
User-agent: magpie-crawler
Disallow: /

# Begin Moz - SEO
# Not to be confused with Mozilla.
User-agent: DotBot
Disallow: /

User-agent: rogerbot
Disallow: /
# End Moz - SEO

# Begin Semrush - SEO
User-agent: SemrushBot
Disallow: /

User-agent: SiteAuditBot
Disallow: /

User-agent: SemrushBot-BA
Disallow: /

User-agent: SemrushBot-SI
Disallow: /

User-agent: SemrushBot-SWA
Disallow: /

User-agent: SplitSignalBot
Disallow: /

User-agent: SemrushBot-OCOB
Disallow: /
# End Semrush - SEO

# cognitiveSEO - SEO
User-agent: JamesBOT
Disallow: /

# oncrawl - SEO
User-agent: Oncrawl
Disallow: /

# BEGIN Awario - Marketing
User-agent: AwarioRssBot
Disallow: /

User-agent: AwarioSmartBot
Disallow: /

User-agent: AwarioBot
Disallow: /
# END Awario - Marketing

# SERPSTAT - SEO
User-agent: serpstatbot
Disallow: /

# website-datenbank.de - Search engine?
User-agent: netEstate NE Crawler
Disallow: /

# Ignores crawl-delay and does not help us.
User-Agent: panscient.com
Disallow: /

# Aggressive Latvian Academic Integrity bot that does not help us.
User-agent: AcademicBotRTU
Disallow: /

# See RT #1298215 about internationalization and localization abuse.
# See RT #1638325 about localization, Savannah, and more.
# See RT #2171216 about redirections and unused files.

Similar sites

Search preview

www.gnu.org
The GNU Operating System and the Free Software Movement
Since 1983, developing the free Unix style operating system GNU, so that computer users can have the freedom to share and improve the software they use.

Most important keywords

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

KeywordResultRecheck
GNU86%Check
GNU Operating76%Check
GNU Operating System71%Check
Free70%Check
Free Software70%Check
Software69%Check
Free Software Movement65%Check
GNU Linux64%Check
GNU Project64%Check
GNU packages64%Check
Show more keywords and terms

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