Web.dev - SEO Checker

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Overview of the SEO Check
Meta information
59% 
Page quality
80% 
Page structure
58% 
Link structure
60% 
Server
88% 
External factors
100% 
SEO Score
Response time
0.66 s
File size
122.20 kB
Words
1092
Media files
10
Number of links
63 internal / 11 external

Task list of SEO Improvements

Meta specifications

Title
(Critically important)
web.dev
The page title is too short. (75 pixels of 580 max pixel length) Optimize title
The domain is used in the page's title.
There are no duplicate words in the title
Meta description
(Critically important)
Guidance to build modern web experiences that work on any browser.
There are more than one meta descriptions on the page. Only one is allowed.
Crawlability
(Critically important)
There are no problems in accessing the website.
Canonical URL
(Important)
https://web.dev/
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)
A writing system was incorrectly specified in alternate links.
The href language x-default is specified more than once in alternate links.
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
google-signin-client-id157101835696-ooapojlodmuabs2do2vuhhnf90bccmoi.apps.googleusercontent.com
google-signin-scopeprofile email https://www.googleapis.com/auth/developerprofiles https://www.googleapis.com/auth/developerprofiles.award
theme-color#3740ff
viewportwidth=device-width, initial-scale=1
descriptionGuidance to build modern web experiences that work in every browser.
langen
twitter:cardsummary
twitter:imagehttps://web.dev/static/images/social-wide.jpg
twitter:site@ChromiumDev
og:site_nameweb.dev
og:typewebsite
og:titleweb.dev
og:descriptionGuidance to build modern web experiences that work in every browser.
og:urlhttps://web.dev/
og:imagehttps://web.dev/images/social-wide.jpg
og:image:width1200
og:image:height675
og:localeen
X-UA-CompatibleIE=Edge
charsetutf-8

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Page quality

Content
(Critically important)
This page contains 1092 words. That's ok.
35.3% of the text are stop words.
The page contains a listing, which indicates a good text layout.
21 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 19 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 usage of strong and bold tags is perfect. We recommend the use of up to 22 tags for this page.
Image SEO
(Somewhat important)
9 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
https://web.dev/static/images/home-blue.pngNo alt attribute provided
...tic/baseline/image/baseline-wordmark.pngNo alt attribute provided
/static/images/ai-feature.pngNo alt attribute provided
/static/images/inp-cwv.v2.pngNo alt attribute provided
/static/identity/image/hero-identity.pngNo alt attribute provided
https://web.dev/static/learn/html/card.pngNo alt attribute provided
https://web.dev/static/learn/css/card.pngNo alt attribute provided
/static/learn/javascript/card.pngNo alt attribute provided
/static/images/blog-header.pngNo alt attribute provided

Page structure

H1 heading
(Critically important)
There is no H1 heading specified.
Headings
(Important)
Some headings occur twice on the page.
The structure of headings is missing one or more levels. Do not skip heading levels.
There are 45 headings on the page. The amount of headings should be in a more proper relation to the amount of text.

Heading structure

Heading levelContent
H2 CSS and UI design
H2 Core Web Vitals
H2 Progressive Web Apps
H2 Accessible for all
H2 Payments and identity
H2 Developer Newsletter
H3 Building a better web, together
H3 Baseline
H3 AI and the web
H3 Optimize INP
H3 Payments & Identity
H3 Explore the web platform
H3 HTML
H3 CSS
H3 JavaScript
H3 Learn the web platform
H3 Learn HTML
H3 Learn CSS
H3 Learn JavaScript
H3 Keep up on web development news
H3 Adapting typography to user preference using CSS
H3 New CSS color spaces and functions in all major engines
H3 What are source maps?
H3 CSS subgrid
H3 The most effective ways to improve Core Web Vitals
H3 How to optimize INP
H3 Common misconceptions about how to optimize LCP
H3 Best practices for measuring Web Vitals in the field
H3 Learn PWA
H3 TransformStream is now supported cross browser.
H3 New patterns for amazing apps
H3 Project Fugu API showcase
H3 Learn Accessibility
H3 Testing web design color contrast
H3 Building the main navigation for a website
H3 Community highlight: Melanie Sumner
H3 Create a passkey for passwordless logins
H3 Sign in with a passkey
H3 Web payments overview
H3 Payment and address form best practices
H3 web.dev
H3 web.dev Duplicate text
H3 Contribute
H3 Related Content
H3 Follow
Some internal links have dynamic parameters. All internal URLs, which are not marked as nofollow, should not contain dynamic parameters.
Some anchor texts are used more than once.
8 links don't have an anchor text.
The number of internal links is ok.
None of the anchor texts is too long.
There are 11 external links on this page.

Found links on this page

LinkAttributesAnchor text
https://web.dev/Anchor Skip to main content
https://io.google/2025/registe...External Register now
https://web.dev/web.dev
https://web.dev/baselineNo Text
https://web.dev/baselineBaseline
https://web.dev/baselineLearn more
https://web.dev/explore/aiNo Text
https://web.dev/explore/aiAI and the web
https://web.dev/explore/aiText duplicate Learn more
/explore/how-to-optimize-inp?u...No Text
/explore/how-to-optimize-inp?u...Optimize INP
/explore/how-to-optimize-inp?u...Start measuring and optimizing
/explore/how-to-optimize-inp?u...Text duplicate Learn more
https://web.dev/identityNo Text
https://web.dev/identityPayments & Identity
https://web.dev/identityText duplicate Learn more
https://web.dev/htmlimage
https://web.dev/htmlHTML
https://web.dev/htmlText duplicate Learn more
https://web.dev/cssweb
https://web.dev/cssCSS
https://web.dev/cssText duplicate Learn more
https://web.dev/javascripttimer
https://web.dev/javascriptJavaScript
https://web.dev/javascriptText duplicate Learn more
https://web.dev/learn/htmlNo Text
https://web.dev/learn/htmlLearn HTML
https://web.dev/learn/htmlStart course
https://web.dev/learn/cssNo Text
https://web.dev/learn/cssLearn CSS
https://web.dev/learn/cssText duplicate Start course
https://web.dev/learn/javascriptNo Text
https://web.dev/learn/javascriptLearn JavaScript
https://web.dev/learn/javascriptText duplicate Start course
https://web.dev/baselineNo Text
https://web.dev/baselineKeep up on web development news
https://web.dev/baselineRead the blog
https://web.dev/cssExplore CSS
/articles/adapting-typography-...Adapting typography to user preference using CSS
/blog/color-spaces-and-functionsNew CSS color spaces and functions in all major engines
/articles/source-mapsWhat are source maps?
/articles/css-subgridCSS subgrid
https://web.dev/performanceExplore Core Web Vitals
https://web.dev/articles/top-cwvThe most effective ways to improve Core Web Vitals
/explore/how-to-optimize-inpHow to optimize INP
/blog/common-misconceptions-lcpCommon misconceptions about how to optimize LCP
/articles/vitals-field-measure...Best practices for measuring Web Vitals in the field
/explore/progressive-web-appsMore on PWA
https://web.dev/learn/pwaLearn PWA
/blog/transformstreamTransformStream is now supported cross browser.
/blog/new-patterns-for-amazing...New patterns for amazing apps
https://developer.chrome.com/f...External Subdomain Project Fugu API showcase
https://web.dev/accessibilityMore on accessibility
/learn/accessibilityLearn Accessibility
/testing-web-design-color-cont...Testing web design color contrast
/articles/website-navigationBuilding the main navigation for a website
/blog/community-highlights/mel...Community highlight: Melanie Sumner
https://web.dev/identityMore on identity
/articles/passkey-registrationCreate a passkey for passwordless logins
/articles/passkey-form-autofillSign in with a passkey
/articles/web-payments-overviewWeb payments overview
/articles/payment-and-address-...Payment and address form best practices
https://issuetracker.google.co...External Subdomain File a bug
https://issuetracker.google.co...External Subdomain See open issues
https://developer.chrome.com/External Subdomain Chrome for Developers
https://blog.chromium.org/External Subdomain Chromium updates
https://web.dev/case-studiesCase studies
https://web.dev/showsPodcasts & shows
https://twitter.com/ChromiumDevExternal @ChromiumDev on X
https://www.youtube.com/user/C...External Subdomain YouTube
https://www.linkedin.com/showc...External Subdomain Chrome for Developers on LinkedIn
/static/blog/feed.xmlRSS
https://policies.google.com/termsExternal Subdomain Terms
https://policies.google.com/pr...External Subdomain Privacy

Server configuration

HTTP redirects
(Critically important)
This page redirects to "https://web.dev/"
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 0.66 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 (122 kB).

HTTP Response Header

NameValue
last-modifiedWed, 15 Jan 2025 16:29:19 GMT
content-typetext/html; charset=utf-8
varyCookie
content-security-policybase-uri 'self'; object-src 'none'; script-src 'strict-dynamic' 'unsafe-inline' https: http: 'nonce-P53rLOjerqWSNmDqLtl+liKu/Zj7Xz' 'unsafe-eval'; report-uri https://csp.withgoogle.com/csp/devsite/v2
strict-transport-securitymax-age=63072000; includeSubdomains; preload
x-frame-optionsSAMEORIGIN
x-xss-protection0
x-content-type-optionsnosniff
cache-controlno-cache, must-revalidate
expires0
pragmano-cache
content-encodinggzip
x-cloud-trace-context70d734ee920ad919e049f271ac9a4ec4
dateTue, 18 Mar 2025 00:54:57 GMT
serverGoogle Frontend
content-length19757
alt-svch3=":443"; ma=2592000,h3-29=":443"; ma=2592000
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 86,295 referring domains.
This page has 95,479,575 backlinks.
This page has backlinks from 49,093 different ip addresses.

Links from Wikipedia

You can find more links using Wikipedia search

Robots.txt

User-agent: *
Disallow:
Sitemap: https://web.dev/sitemap.xml

Similar sites

Search preview

web.dev
web.dev
Guidance to build modern web experiences that work on any browser.

Most important keywords

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

KeywordResultRecheck
web79%Check
dev68%Check
Web Platform61%Check
Web Vitals61%Check
Core Web61%Check
Web Design61%Check
Web Apps61%Check
Web payments61%Check
Web Development60%Check
Progressive Web60%Check
Show more keywords and terms

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