Mozilla.org - SEO Checker

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Overview of the SEO Check
Meta information
90% 
Page quality
86% 
Page structure
28% 
Link structure
75% 
Server
92% 
External factors
100% 
SEO Score
Response time
0.55 s
File size
106.10 kB
Words
927
Media files
32
Number of links
35 internal / 51 external

Task list of SEO Improvements

Meta specifications

Title
(Critically important)
Mozilla - Internet for people, not profit (US)
The length of the page title is perfect. (382 pixels out of 580 max pixel length)
There are no duplicate words in the title
Meta description
(Critically important)
We’re working to put control of the internet back in the hands of the people using it.
The length of the meta description is perfect. (510 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
descriptionWe’re working to put control of the internet back in the hands of the people using it.
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/m24/og.5b9d3fdd1709.png
og:titleMozilla - Internet for people, not profit (US)
og:descriptionWe’re working to put control of the internet back in the hands of the people using it.
charsetutf-8

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Page quality

Content
(Critically important)
This page contains 927 words. That's ok.
31.6% 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.
15 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 13.79 words is good.
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 following tag is repeated too often: :
Image SEO
(Somewhat important)
16 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
.../logos/m24/lockup-black.f2ddba3f0724.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
...os/firefox/browser/logo.eb1324e44442.svgNo alt attribute provided
...efox/browser/focus/logo.aac3e33175cb.svgNo alt attribute provided
.../logos/mozilla/vpn/logo.c648f487bfb8.svgNo alt attribute provided
...os/firefox/monitor/logo.d97e5516f9e6.svgNo alt attribute provided
...irefox/relay/logo-white.d42a8b52e44c.svgNo alt attribute provided
...l/img/logos/pocket/logo.17446bc33a5d.svgNo alt attribute provided
...logos/mdn/mdn-plus-logo.c615b46ca4ce.svgNo alt attribute provided
...ogos/fakespot/logo-blue.3973b8fe9631.svgNo alt attribute provided
...erbird/logo-thunderbird.121e9c0fed45.svgNo alt attribute provided
...g/home/2024/donate-1450.35972e7600d7.jpgNo alt attribute provided
...allery/voice-mobile-720.9eb39c7d18a1.jpgNo alt attribute provided
.../trustworthy-mobile-720.4e1cd1d6b0a2.jpgMark Surman, President of Mozilla.
...ry/lumigator-mobile-720.5f2df6827690.jpgLumigator logo.
...ery/ventures-mobile-720.0e636a424d6e.jpgSpeaker on stage with multiple product logos.
...ry/llamafile-mobile-720.6edf93f3f119.jpgLlamafile logo.
...ery/builders-mobile-720.7e78f84a25ad.jpgBuilders
.../2024/media/chambers-72.ea274b8303a1.jpgLaura Chambers
.../2024/media/khalifah-72.021753cc3648.jpgSaoud Khalifah
...2024/media/irl-green-72.109594156c15.pngIRL Podcast
...ome/2024/media/smith-72.4a9a8d9345f5.jpgRebecca Smith
.../2024/media/irl-pink-72.d983f490bc2f.pngIRL Podcast
...024/media/irl-orange-72.5f1809127d78.pngIRL Podcast
...ome/2024/media/bravo-72.660e14314973.jpgKristina Bravo
...4/showcase/showcase-som.6d37c34fdc55.svgAbstract pixel art in shades of green, orange and pink
...ome/2024/issues/pni-720.b525e8f0d002.jpgSmart devices with caution icon.
...ome/2024/issues/irl-720.113c6f42ddf9.jpgBridget Todd, host of IRL Podcast.
.../logos/m24/symbol-white.05fe537b39ce.svgNo alt attribute provided
...ogos/m24/wordmark-white.2d673bb5b33a.svgNo alt attribute provided

Page structure

H1 heading
(Critically important)
Welcome to Mozilla
The H1 heading contains the words Welcome to! Use important keywords instead.
The H1 heading is too short (18 characters). It should be at least 20 Characters long.
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 Welcome to Mozilla
H2 Firefox for Desktop
H2 Firefox for iOS
H2 Firefox for Android
H2 Firefox Focus
H2 Firefox blog
H2 Mozilla VPN
H2 Mozilla Monitor
H2 Firefox Relay
H2 Pocket
H2 MDN Plus
H2 Fakespot
H2 Thunderbird
H2 About Mozilla
H2 The Mozilla Manifesto
H2 Get Involved
H2 Innovation Projects
H2 Blog
H2 Mozilla Foundation
H2 Mozilla.ai
H2 Mozilla Ventures
H2 Mozilla Advertising
H2 Mozilla Builders
H2 Love the internet again
H2 Donate to the Mozilla non-profit
H2 Join the movement: AI for the people
H2 State of Mozilla
H2 Explore issues shaping the future of the internet
H2 Company
H2 Support
H2 Resources
H2 Developers
H2 Follow @Mozilla
H2 Follow @Firefox
H3 Common Voice
H3 Can AI be trustworthy?
H3 Lumigator
H3 Mozilla Ventures Duplicate text
H3 Llamafile
H3 Mozilla Builders Duplicate text
H3 You, AI and the internet — what’s really going on?
H3 2024
H3 *Privacy Not Included
H3 IRL Podcast
H3 Love the Web
H3 Thanks!
The number of internal links is ok.
Every linktext is unique.
None of the anchor texts is too long.
All internal links are not using dynamic parameters.
There are too many external links (51) on this page.

Found links on this page

LinkAttributesAnchor text
https://www.mozilla.org/en-US/IMG-ALT Mozilla
/en-US/firefox/Firefox browsers
/en-US/firefox/new/Firefox for Desktop
/en-US/firefox/browsers/mobile...Firefox for iOS
/en-US/firefox/browsers/mobile...Firefox for Android
/en-US/firefox/browsers/mobile...Firefox Focus
https://blog.mozilla.org/firef...External Subdomain Firefox blog
/en-US/products/Products
/en-US/products/vpn/Mozilla VPN
https://monitor.mozilla.org/?u...External Subdomain Mozilla Monitor
https://relay.firefox.com/?utm...External Subdomain Firefox Relay
https://getpocket.com/firefox_...External Pocket
https://developer.mozilla.org/...External Subdomain MDN Plus
https://fakespot.com/?utm_sour...External Fakespot
https://www.thunderbird.net/?u...External Subdomain Thunderbird
/en-US/products/All products
/en-US/about/About us
/en-US/about/About Mozilla
/en-US/about/manifesto/The Mozilla Manifesto
/en-US/contribute/Get Involved
https://future.mozilla.org/?ut...External Subdomain Innovation Projects
https://blog.mozilla.org/?utm_...External Subdomain Blog
https://foundation.mozilla.org...External Subdomain Mozilla Foundation
https://www.mozilla.ai/?utm_so...External Subdomain Mozilla.ai
https://mozilla.vc/?utm_source...External Mozilla Ventures
/en-US/advertising/Mozilla Advertising
https://builders.mozilla.org/?...External Subdomain Mozilla Builders
/en-US/about/Learn about us
/en-US/firefox/Firefox: Get the gold standard for browsing with speed, privacy and control.
https://www.thunderbird.net/?u...External Subdomain Thunderbird: Go chaos-free with one app for all your emails, calendars and contacts.
https://www.fakespot.com/?utm_...External Subdomain Fakespot: Spot fake reviews, products and maybe one day, even fake laughs ;)
https://getpocket.com/signup?u...External Pocket: Save the internet’s best content on any device — because who has time to read everything now?
/en-US/products/vpn/Mozilla VPN: Keep your location and online adventures private — stream like a local, anywhere.
https://monitor.mozilla.org/?u...External Subdomain Mozilla Monitor: Get a heads-up if your personal info is at risk and lock it down like a pro.
https://relay.firefox.com/??ut...External Subdomain Firefox Relay: Mask your email and phone number so you only get the messages you want.
/en-US/products/Explore our products
https://foundation.mozilla.org...External Subdomain Donate
https://commonvoice.mozilla.or...New window External Subdomain Common Voice
https://www.youtube.com/watch?...New window External Subdomain Can AI be trustworthy?
https://blog.mozilla.ai/introd...New window External Subdomain Lumigator
https://mozilla.vc/?utm_source...New window External Text duplicate Mozilla Ventures
https://builders.mozilla.org/p...New window External Subdomain Llamafile
https://builders.mozilla.org/?...New window External Subdomain Text duplicate Mozilla Builders
https://blog.mozilla.org/en/mo...External Subdomain Article Laura Chambers Privacy & Security Introducing Anonym: Raising the bar for privacy-preserving digital advertising.
IMG-ALT Laura Chambers
https://blog.mozilla.org/en/mo...External Subdomain Article Saoud Khalifah Artificial Intelligence Keeping GenAI technologies secure is a shared responsibility.
IMG-ALT Saoud Khalifah
https://irlpodcast.org/season7...External Podcast IRL Podcast Artificial Intelligence From Hollywood to hip hop, artists are negotiating AI consent.
IMG-ALT IRL Podcast
https://blog.mozilla.org/en/pr...External Subdomain Video Rebecca Smith News Mozilla celebrates groundbreaking creators in new docuseries “Firefox Presents.”
IMG-ALT Rebecca Smith
https://irlpodcast.org/season7...External Podcast IRL Podcast Artificial Intelligence Big tech’s power over language means power over people. Bridget Todd talks to language community leaders paving t...
IMG-ALT IRL Podcast
https://irlpodcast.org/season7...External Podcast IRL Podcast Artificial Intelligence Why does it so often feel like we’re part of a mass AI experiment? What is the responsible way to test new techno...
IMG-ALT IRL Podcast
https://blog.mozilla.org/en/in...External Subdomain Article Kristina Bravo Privacy & Security Kids are growing up in a very online world. What’s a concerned parent to do?
IMG-ALT Kristina Bravo
/en-US/foundation/annualreport...Read the report
https://foundation.mozilla.org...New window External Subdomain *Privacy Not Included
https://irlpodcast.org/?utm_so...External IRL Podcast
/en-US/privacy/websites/this Privacy Notice
/en-US/about/leadership/Leadership
https://blog.mozilla.org/categ...External Subdomain Press Center
/en-US/careers/Careers
/en-US/contact/Contact
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/advertising/Advertise with Mozilla
/firefox/135.0/releasenotes/Firefox Release Notes
/en-US/firefox/developer/Developer Edition
/en-US/firefox/enterprise/Enterprise
https://firefox-source-docs.mo...External Subdomain Tools
https://developer.mozilla.org/...External Subdomain MDN
https://bsky.app/profile/mozil...External Bluesky (@mozilla.org)
https://www.instagram.com/mozi...External Subdomain Instagram (@mozilla)
https://www.linkedin.com/compa...External Subdomain LinkedIn (@mozilla)
https://www.tiktok.com/@mozillaExternal Subdomain TikTok (@mozilla)
https://open.spotify.com/show/...External Subdomain Spotify (@mozilla)
https://bsky.app/profile/firef...External Bluesky (@firefox.com)
https://www.instagram.com/fire...External Subdomain Instagram (@firefox)
https://www.youtube.com/user/f...External Subdomain YouTube (@firefoxchannel)
https://www.tiktok.com/@firefoxExternal Subdomain TikTok (@firefox)
https://foundation.mozilla.org...External Subdomain Text duplicate Donate
https://www.mozilla.org/locales/All languages
https://www.mozilla.org/en-US/Mozilla Corporation’s
https://foundation.mozilla.org...External Subdomain Text duplicate Mozilla Foundation
/en-US/foundation/licensing/we...Creative Commons license
/en-US/privacy/websites/Website Privacy Notice
/en-US/privacy/websites/cookie...Cookies
/en-US/about/legal/Legal
/en-US/about/governance/polici...Community Participation Guidelines
/en-US/about/this-site/About this site

Server configuration

HTTP redirects
(Critically important)
This page redirects to "https://www.mozilla.org/en-US/"
HTTP header
(Important)
No X-Powered HTTP header is sent.
This page uses GZip for compressed data transmission.
Performance
(Somewhat important)
The page response time of 0.55 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.
The file size of the HTML document is fine (106 kB).

HTTP Response Header

NameValue
content-typetext/html; charset=utf-8
x-content-type-optionsnosniff
strict-transport-securitymax-age=31536000
referrer-policystrict-origin-when-cross-origin
content-languageen-US
cross-origin-opener-policysame-origin
content-security-policy-report-onlydefault-src 'self'; script-src 'self' tagmanager.google.com 'unsafe-inline' js.stripe.com *.mozilla.com www.googletagmanager.com 'unsafe-eval' *.mozilla.org www.google-analytics.com www.youtube.com *.mozilla.net s.ytimg.com; media-src 'self' assets.mozilla.net videos.cdn.mozilla.net; img-src 'self' *.mozilla.com www.googletagmanager.com *.mozilla.org www.google-analytics.com images.ctfassets.net data: *.mozilla.net; base-uri 'none'; object-src 'none'; font-src 'self' *.mozilla.net *.mozilla.org *.mozilla.com; frame-ancestors 'none'; connect-src 'self' sentry.prod.mozaws.net o1069899.sentry.io o1069899.ingest.sentry.io www.googletagmanager.com *.mozilla.com region1.google-analytics.com stage.cjms.nonprod.cloudops.mozgcp.net https://accounts.firefox.com/ *.mozilla.org www.google-analytics.com *.mozilla.net cjms.services.mozilla.com; upgrade-insecure-requests; child-src 'self' js.stripe.com www.googletagmanager.com *.mozilla.com *.mozilla.org www.google-analytics.com accounts.firefox.com www.youtube.com *.mozilla.net; frame-src 'self' js.stripe.com www.googletagmanager.com *.mozilla.com *.mozilla.org www.google-analytics.com accounts.firefox.com www.youtube.com *.mozilla.net; style-src 'self' *.mozilla.com *.mozilla.org *.mozilla.net
x-clacks-overheadGNU Terry Pratchett
x-backend-serverbedrock-8586d7b7db-tp2g5.gcp-us-west1
servergranian
expiresThu, 13 Feb 2025 00:09:41 GMT
cache-controlmax-age=600
content-security-policydefault-src 'self' *.mozilla.net *.mozilla.org *.mozilla.com; script-src 'self' tagmanager.google.com 'unsafe-inline' js.stripe.com *.mozilla.com www.googletagmanager.com 'unsafe-eval' *.mozilla.org www.google-analytics.com www.youtube.com *.mozilla.net s.ytimg.com; img-src 'self' *.mozilla.com www.googletagmanager.com *.mozilla.org www.google-analytics.com images.ctfassets.net data: *.mozilla.net; font-src 'self' *.mozilla.net *.mozilla.org *.mozilla.com; frame-ancestors 'none'; connect-src 'self' sentry.prod.mozaws.net o1069899.sentry.io o1069899.ingest.sentry.io www.googletagmanager.com *.mozilla.com region1.google-analytics.com stage.cjms.nonprod.cloudops.mozgcp.net https://accounts.firefox.com/ *.mozilla.org www.google-analytics.com *.mozilla.net cjms.services.mozilla.com; upgrade-insecure-requests; child-src 'self' js.stripe.com www.googletagmanager.com *.mozilla.com *.mozilla.org www.google-analytics.com accounts.firefox.com www.youtube.com *.mozilla.net; frame-src 'self' js.stripe.com www.googletagmanager.com *.mozilla.com *.mozilla.org www.google-analytics.com accounts.firefox.com www.youtube.com *.mozilla.net; style-src 'self' 'unsafe-inline' *.mozilla.com *.mozilla.org *.mozilla.net
etag"87868ed194509bd0f22cfc23073e2a14"
via1.1 google, 1.1 varnish, 1.1 varnish
x-frame-optionsDENY
content-encodinggzip
accept-rangesbytes
age0
dateThu, 13 Feb 2025 00:24:50 GMT
x-served-bycache-fra-eddf8230037-FRA, cache-fra-etou8220179-FRA
x-cacheMISS, HIT
x-cache-hits0, 0
x-timerS1739406290.930603,VS0,VE311
varyAccept-Encoding
content-length22233
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 3,398 referring domains.
This page has 290,326 backlinks.
This page has backlinks from 2,389 different ip addresses.

Links from Wikipedia

You can find more links using Wikipedia search

Robots.txt

user-agent: *
disallow: /*/firstrun/
disallow: /*/newsletter/existing/
disallow: /*/whatsnew/
disallow: /*/etc/
Sitemap: https://www.mozilla.org/sitemap.xml

Similar sites

Search preview

www.mozilla.org › en-US
Mozilla - Internet for people, not profit (US)
We’re working to put control of the internet back in the hands of the people using it.

Most important keywords

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

KeywordResultRecheck
Mozilla80%Check
internet66%Check
Mozilla Firefox64%Check
Mozilla VPN64%Check
Mozilla Monitor64%Check
Mozilla Builders63%Check
people62%Check
Mozilla Ventures62%Check
Mozilla Foundation61%Check
Welcome50%Check
Show more keywords and terms

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