Mozilla.org - SEO Checker

Overview of the SEO Check
Meta information
90% 
Page quality
65% 
Page structure
58% 
Link structure
80% 
Server
64% 
External factors
100% 
SEO Score
Response time
0.04 s
File size
83.00 kB
Words
923
Media files
24
Number of links
52 internal / 39 external

Task list of SEO Improvements

Meta specifications

Title
(Critically important)
Internet for people, not profit — Mozilla (US)
The length of the page title is perfect. (396 pixels out of 580 max pixel length)
There are no duplicate words in the title
Meta description
(Critically important)
Did you know? Mozilla — the maker of Firefox — fights to keep the internet a global public resource, open and accessible to all.
The length of the meta description is perfect. (784 pixels out of 1000 max pixel length)
Crawlability
(Critically important)
There are no problems in accessing the website.
Canonical URL
(Important)
https://www.mozilla.org/en-US/
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)
An URL is specified multiple times in alternate links.
Language for link pointing to page itself inaccurate
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 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
msvalidate.01B7B177115A634927D608514DA17B2574
google-site-verificationU9a6gH32vLIykvntaDToj-ytYhlZ1AfAgVEKstixQIE
descriptionDid you know? Mozilla — the maker of Firefox — fights to keep the internet a global public resource, open and accessible to all.
langen
twitter:cardsummary
twitter:site@mozilla
twitter:domainmozilla.org
twitter:app:name:googleplayFirefox
twitter:app:id:googleplayorg.mozilla.firefox
twitter:app:name:iphoneFirefox
twitter:app:id:iphone989804926
twitter:app:name:ipadFirefox
twitter:app:id:ipad989804926
fb:page_id262134952380
og:typewebsite
og:site_nameMozilla
og:localeen_US
og:urlhttps://www.mozilla.org/en-US/
og:imagehttps://www.mozilla.org/media/img/mozorg/mozilla-256.4720741d4108.jpg
og:titleInternet for people, not profit — Mozilla (US)
og:descriptionDid you know? Mozilla — the maker of Firefox — fights to keep the internet a global public resource, open and accessible to all.
charsetutf-8

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Page quality

Content
(Critically important)
Words from the H1 heading are not used in the page content.
This page contains 923 words. That's ok.
30.7% 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.
10 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 12.61 words is good.
Frames
(Critically important)
This page does not use a frameset.
Mobile optimization
(Somewhat important)
This page loads 11 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 18 tags for this page.
Image SEO
(Somewhat important)
22 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
...s/mozilla/logo-word-hor.e20791bb4dd4.svgMozilla
...os/firefox/browser/logo.eb1324e44442.svgNo alt attribute provided
...os/firefox/browser/logo.eb1324e44442.svgNo alt attribute provided
...os/firefox/browser/logo.eb1324e44442.svgNo alt attribute provided
...efox/browser/focus/logo.aac3e33175cb.svgNo alt attribute provided
...ns/icon-privacy-promise.eee1662acb03.svgNo alt attribute provided
...os/firefox/monitor/logo.d97e5516f9e6.svgNo alt attribute provided
...l/img/logos/pocket/logo.17446bc33a5d.svgNo alt attribute provided
...ogos/firefox/relay/logo.683083c53b93.svgNo alt attribute provided
...nav/icons/icon-mdn-plus.f54475f980ab.svgNo alt attribute provided
...icons/icon-mozilla-hubs.68cdfe62681b.svgNo alt attribute provided
.../browser/developer/logo.41d42822c8fb.svgNo alt attribute provided
...icons/icon-common-voice.127fa3f5dcb0.svgNo alt attribute provided
...con-innovation-projects.11f189479119.svgNo alt attribute provided
...os/firefox/browser/logo.eb1324e44442.svgNo alt attribute provided
...l/img/logos/pocket/logo.17446bc33a5d.svgNo alt attribute provided
...irefox/relay/logo-white.d42a8b52e44c.svgNo alt attribute provided
.../logos/mozilla/vpn/logo.c648f487bfb8.svgNo alt attribute provided
...mg/home/2023/mofo-split.e28f9f2631fc.pngNo alt attribute provided
...e/2023/contribute-split.202473fa9197.pngNo alt attribute provided
...ome/2023/pocket-best-of.a28e694b07f6.pngPocket: Best of 2023
.../home/2023/mozilla-dino.3affc2229c70.svgNo alt attribute provided
...pocket-logo-transparent.c3f53896c62d.svgNo alt attribute provided
...3/pocket-best-of-pencil.263e2960acd8.pngNo alt attribute provided

Page structure

H1 heading
(Critically important)
Mission-driven. People-powered.
The H1 heading is perfect.
Headings
(Important)
Some headings occur twice on the page.
There are 46 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 Mission-driven. People-powered.
H2 Mozilla makes privacy-respecting products
H2 Is Mozilla a corporation or a non-profit? Actually, both.
H2 Join the fight for a healthy internet
H2 Discover the top articles of 2023
H2 That one time we gave away our source-code...
H2 Get (good) Mozilla news
H2 Discover the top articles of 2023 Duplicate text
H3 Private & secure browsing
H3 The web’s most intriguing articles
H3 Easy-to-use email & phone masks
H3 A VPN you can trust
H3 Get Firefox news
H3 Thanks!
H4 Firefox for Desktop
H4 Firefox for Android
H4 Firefox for iOS
H4 Firefox Focus
H4 Privacy Promise
H4 Firefox Blog
H4 Release Notes
H4 Firefox Monitor
H4 Facebook Container
H4 Pocket
H4 Mozilla VPN
H4 Product Promise
H4 Firefox Relay
H4 MDN Plus
H4 Mozilla Manifesto
H4 Mozilla Foundation
H4 Get involved
H4 Stories
H4 Leadership
H4 Careers
H4 Mozilla Blog
H4 Mozilla Hubs
H4 Firefox Developer Edition
H4 MDN Web Docs
H4 Common Voice
H4 Mozilla Innovation Projects
H5 Company
H5 Resources
H5 Support
H5 Developers
H5 Follow @Mozilla
H5 Follow @Firefox
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 (39) on this page.
LinkAttributesAnchor text
https://www.mozilla.org/en-US/IMG-ALT Mozilla
/firefox/download/thanks/Download Firefox
https://support.mozilla.org/kb...External Subdomain no longer supported
https://download.mozilla.org/?...External Subdomain Download Firefox ESR 64-bit
https://download.mozilla.org/?...External Subdomain Download Firefox ESR 32-bit
/en-US/firefox/all/Download a different build
https://support.mozilla.org/kb...External Subdomain Text duplicate no longer supported
https://download.mozilla.org/?...External Subdomain Download Firefox ESR
/en-US/privacy/firefox/Firefox Privacy Notice
/en-US/products/vpn/Get Mozilla VPN
/en-US/firefox/browsers/Firefox Browsers
/en-US/firefox/new/Firefox for Desktop Get the not-for-profit-backed browser on Windows, Mac or Linux.
/en-US/firefox/browsers/mobile...Firefox for Android Get the customizable mobile browser for Android smartphones.
/en-US/firefox/browsers/mobile...Firefox for iOS Get the mobile browser for your iPhone or iPad.
/en-US/firefox/browsers/mobile...Firefox Focus Simply private mobile browsing.
/en-US/firefox/privacy/Privacy Promise Learn how Firefox treats your data with respect.
https://blog.mozilla.org/firef...External Subdomain Firefox Blog Read about new Firefox features and ways to stay safe online.
/firefox/121.0.1/releasenotes/Release Notes Get the details on the latest Firefox updates.
/en-US/firefox/browsers/View all Firefox Browsers
/en-US/firefox/products/Products
https://monitor.mozilla.org/?u...External Subdomain Firefox Monitor See if your email has appeared in a company’s data breach.
/en-US/firefox/facebookcontainer/Facebook Container Help prevent Facebook from collecting your data outside their site.
https://getpocket.com/firefox_...External Pocket Save and discover the best stories from across the web.
/en-US/products/vpn/Mozilla VPN Get protection beyond your browser, on all your devices.
/en-US/firefox/privacy/products/Product Promise Learn how each Firefox product protects and respects your data.
https://relay.firefox.com/?utm...External Subdomain Firefox Relay Sign up for new accounts without handing over your email address.
https://developer.mozilla.org/...External Subdomain MDN Plus New features and tools for a customized MDN experience
/en-US/firefox/products/View all Products
/en-US/about/Who We Are
/en-US/about/manifesto/Mozilla Manifesto Learn about the values and principles that guide our mission.
https://foundation.mozilla.org...External Subdomain Mozilla Foundation Meet the not-for-profit behind Firefox that stands for a better web.
/en-US/contribute/Get involved Join the fight for a healthy internet.
/en-US/stories/Stories Stories about how our people and products are changing the world for the better.
/en-US/about/leadership/Leadership Meet the team that’s building technology for a better internet.
/en-US/careers/Careers Work for a mission-driven organization that makes people-first products.
https://blog.mozilla.org/?utm_...External Subdomain Mozilla Blog Learn about Mozilla and the issues that matter to us.
/en-US/about/More About Mozilla
https://labs.mozilla.org/?utm_...External Subdomain Innovation
https://hubs.mozilla.com/?utm_...External Subdomain Mozilla Hubs Gather in this interactive, online, multi-dimensional social space.
/en-US/firefox/developer/Firefox Developer Edition Get the Firefox browser built just for developers.
https://developer.mozilla.org/...External Subdomain MDN Web Docs Check out the home for web developer resources.
https://commonvoice.mozilla.or...External Subdomain Common Voice Donate your voice so the future of the web can hear everyone.
https://future.mozilla.org/?ut...External Subdomain Mozilla Innovation Projects Discover ways to bring bright ideas to life.
/en-US/firefox/new/Get Firefox
https://getpocket.com/?utm_sou...External Get Pocket
https://relay.firefox.com/?utm...External Subdomain Get Relay
/en-US/products/vpn/Text duplicate Get Mozilla VPN
/en-US/about/manifesto/Learn about the Mozilla Foundation
/en-US/contribute/Volunteer with Mozilla
https://www.getpocket.com/2023/New window External See the winners
/en-US/about/Learn more about Mozilla
/en-US/privacy/websites/this Privacy Notice
https://www.mozilla.org/en-US/Text duplicate Mozilla
/en-US/about/manifesto/Mozilla Manifesto
https://blog.mozilla.org/press...External Subdomain Press Center
https://blog.mozilla.org/?utm_...External Subdomain Corporate Blog
/en-US/careers/Careers
/en-US/contact/Contact
https://foundation.mozilla.org...External Subdomain Donate
/en-US/privacy/Privacy Hub
/en-US/firefox/browsers/compare/Browser Comparison
https://mozilla.design/?utm_so...External Subdomain Brand Standards
https://support.mozilla.org/?u...External Subdomain Product Help
https://bugzilla.mozilla.org/?...External Subdomain File a Bug
https://pontoon.mozilla.org/?u...External Subdomain Localize Mozilla
/en-US/firefox/developer/Developer Edition
/en-US/firefox/channel/desktop/Beta
/en-US/firefox/channel/android/Beta for Android
/en-US/firefox/channel/desktop/Nightly
/en-US/firefox/channel/android/Nightly for Android
/en-US/firefox/enterprise/Enterprise
https://firefox-source-docs.mo...External Subdomain Tools
https://twitter.com/mozillaExternal Twitter (@mozilla)
https://mozilla.social/@MozillaExternal Subdomain Mastodon (@mozilla)
https://www.instagram.com/mozi...External Instagram (@mozilla)
https://www.linkedin.com/compa...External LinkedIn (@mozilla)
https://www.tiktok.com/@mozillaExternal TikTok (@mozilla)
https://open.spotify.com/show/...External Subdomain Spotify (@mozilla)
https://twitter.com/firefoxExternal Twitter (@firefox)
https://www.instagram.com/fire...External Instagram (@firefox)
https://www.youtube.com/user/f...External YouTube (@firefoxchannel)
/en-US/locales/Language
/en-US/privacy/websites/Website Privacy Notice
/en-US/privacy/websites/Cookies
/en-US/about/legal/Legal
/en-US/about/governance/polici...Community Participation Guidelines
/en-US/about/this-site/About this site
https://www.mozilla.org/en-US/Mozilla Corporation’s
https://foundation.mozilla.org...External Subdomain Mozilla Foundation
/en-US/foundation/licensing/we...Creative Commons license
https://www.getpocket.com/2023/New window External Text duplicate See the winners

Server configuration

HTTP redirects
(Critically important)
This page redirects to "https://www.mozilla.org/en-US/"
HTTP header
(Important)
The web server version is sent within the HTTP header.
No X-Powered HTTP header is sent.
This page uses GZip for compressed data transmission.
Performance
(Somewhat important)
This page loads 7 CSS files. This may affect the page load time negatively.
This page loads 11 JavaScript files. This may affect the load time negatively.
The page response time is excellent with 0.04 seconds.
The file size of the HTML document is fine (83 kB).

HTTP Response Header

NameValue
content-typetext/html; charset=utf-8
servermeinheld/1.0.2
dateMon, 15 Jan 2024 13:47:17 GMT
x-frame-optionsDENY
content-security-policyimg-src 'self' *.mozilla.net *.mozilla.org *.mozilla.com *.mozilla.org data: mozilla.org www.googletagmanager.com www.google-analytics.com creativecommons.org images.ctfassets.net; font-src 'self'; style-src 'self' *.mozilla.net *.mozilla.org *.mozilla.com *.mozilla.org 'unsafe-inline'; default-src 'self' *.mozilla.net *.mozilla.org *.mozilla.com *.mozilla.org; frame-src 'self' *.mozilla.net *.mozilla.org *.mozilla.com *.mozilla.org www.googletagmanager.com www.google-analytics.com www.youtube-nocookie.com trackertest.org www.surveygizmo.com accounts.firefox.com accounts.firefox.com.cn www.youtube.com js.stripe.com; child-src 'self' *.mozilla.net *.mozilla.org *.mozilla.com *.mozilla.org www.googletagmanager.com www.google-analytics.com www.youtube-nocookie.com trackertest.org www.surveygizmo.com accounts.firefox.com accounts.firefox.com.cn www.youtube.com js.stripe.com; connect-src 'self' *.mozilla.net *.mozilla.org *.mozilla.com *.mozilla.org www.googletagmanager.com www.google-analytics.com region1.google-analytics.com sentry.prod.mozaws.net o1069899.sentry.io o1069899.ingest.sentry.io https://accounts.firefox.com/ stage.cjms.nonprod.cloudops.mozgcp.net cjms.services.mozilla.com; script-src 'self' *.mozilla.net *.mozilla.org *.mozilla.com *.mozilla.org 'unsafe-inline' 'unsafe-eval' www.googletagmanager.com www.google-analytics.com tagmanager.google.com www.youtube.com s.ytimg.com js.stripe.com
cache-controlmax-age=600
expiresMon, 15 Jan 2024 13:57:18 GMT
x-clacks-overheadGNU Terry Pratchett
x-backend-serverbedrock-5bd76b786c-dglgn.gcp-eu-west1
strict-transport-securitymax-age=31536000
x-content-type-optionsnosniff
x-xss-protection1; mode=block
referrer-policystrict-origin-when-cross-origin
via1.1 google, 1.1 df3b3b9f4fa0f79195c56a91cf242364.cloudfront.net (CloudFront)
content-encodinggzip
etagW/"ad479be809e55d6b998221b19bca9be1"
varyAccept-Encoding
x-cacheHit from cloudfront
x-amz-cf-popFRA60-P1
x-amz-cf-idBJ4nlsUZ1HO7VzBhXAy5CMDyPRyqNP38WAABBnRZN1t6wGl9WQxL7Q==
age185
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 3,564 referring domains.
This page has 316,869 backlinks.
This page has backlinks from 2,803 different ip addresses.
Facebook popularity
(Somewhat important)
The page has 0 shares and comments on Facebook.
Listed on Webwiki
(Nice to have)
This website is listed on Webwiki.

Search preview

www.mozilla.org › en-US
Internet for people, not profit — Mozilla (US)
Did you know? Mozilla — the maker of Firefox — fights to keep the internet a global public resource, open and accessible to all.

Most important keywords

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

KeywordResultRecheck
Mozilla74%Check
Mozilla Firefox67%Check
internet62%Check
people62%Check
Firefox61%Check
profit Mozilla60%Check
Mozilla VPN59%Check
Mozilla project58%Check
Mozilla Foundation57%Check
Mozilla corporation57%Check

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