web.dev
web.dev
Last scanned Jul 29, 2026, 2:00 PM · 11 views
Overall score
Excellent
Summary
Guidance to build modern web experiences that work in every browser. This website uses Google Analytics. SEO is good (80/100) and accessibility is excellent (90/100). Security scores excellent (90/100) and performance excellent (100/100). Top issue: No H1 heading found.
web.dev
Guidance to build modern web experiences that work in every browser.
Top issues to fix
5 issues found · 1 high priority
No H1 heading found
SEOAdd exactly one H1 describing the page's main topic — it anchors the document outline for search engines and screen readers.
Missing X-Frame-Options header
SecurityAdd X-Frame-Options (or a CSP frame-ancestors rule) to prevent clickjacking via hidden iframes.
robots.txt not found
SEOPublish /robots.txt with a Sitemap: directive to guide crawlers.
sitemap.xml not found
SEOPublish an XML sitemap and reference it from robots.txt to speed up page discovery.
20 broken links on the page
SEOFix or remove broken links — they waste crawl budget and erode user trust.
SEO
3 issue(s) found
Performance
598 ms
Security
HTTPS & header checks
Accessibility
1 issue(s) found
Score history
+4 overall since Jul 18, 2026
- Overall
- 90
- SEO
- 80
- Security
- 90
- Performance
- 100
- Accessibility
- 90
Organization
Company details published in this site's own structured data.
Meta tags
- Title
- web.dev
- Description
- Guidance to build modern web experiences that work in every browser.
- Canonical
- https://web.dev/
- Language
- en
- Charset
- utf-8
- Viewport
- width=device-width, initial-scale=1
- Robots meta
- Manifest
- https://web.dev/_pwa/web/manifest.json
Technologies
Detected frameworks, languages, and tools.
Hosting & CDN
- Hosting provider
- —
- CDN provider
- —
- IP address
- —
- ASN
- —
DNS records
| Type | Value |
|---|---|
| A | — |
| AAAA | — |
| MX | — |
| TXT | — |
| NS | — |
| CAA | — |
| CNAME | — |
| IPv6 support | No |
TLS / SSL certificate
- Version
- TLS 1.3
- Issuer
- Google Trust Services
- Subject
- devsite-sni.developers.google.com
- Valid from
- Jun 29, 2026
- Valid to
- Sep 21, 2026
- Days until expiry
- 53
- SAN domains
- devsite-sni.developers.google.com, docs.actifio.com, d.actifio.com, apigee.com, *.apigee.com, appdefensealliance.dev, *.appdefensealliance.dev, bazel.build, *.bazel.build, builders.google, *.builders.google, cel.dev, *.cel.dev, deepmind.google.com, *.deepmind.google.com, developer.nest.com, developers.nest.com, devsitetest.how, *.devsitetest.how, fuchsia.dev, *.fuchsia.dev, issues.fuchsia.dev, *.issues.fuchsia.dev, generativeai.google, *.generativeai.google, *.generativeai.google.com, google.dev, ai.google.dev, www.ai.google.dev, *.google.dev, intrinsic.ai, *.intrinsic.ai, jibemobile.com, *.jibemobile.com, learn.mapsplatform.google.com, *.learn.mapsplatform.google.com, onboarding.off.goog, *.onboarding.off.goog, openthread.io, *.openthread.io, openweave.io, *.openweave.io, openxla.org, *.openxla.org, preview.source.android.com, privacysandbox.google.com, *.privacysandbox.google.com, quantumai.google, *.quantumai.google, tensorflow.org, *.tensorflow.org, web.dev, *.web.dev, webrtc.org, www.webrtc.org, wing.com, *.wing.com, wing.dev, *.wing.dev, devsite.google, *.devsite.google, mediapipe.dev, *.mediapipe.dev, ai.dev, *.ai.dev, ai.studio, *.ai.studio, app.new, *.app.new, chat.new, *.chat.new, bot.new, *.bot.new, agent.new, *.agent.new, ai.app, *.ai.app
Security headers
- Strict-Transport-SecurityEnabled
- Content-Security-PolicyEnabled
- X-Frame-OptionsMissing
- X-Content-Type-OptionsEnabled
- Referrer-PolicyMissing
- Permissions-PolicyMissing
Compression: gzip · 0 cookie(s) observed
Content & assets
Headings
H1 0 · H2 9 · H3 40
Links
50 internal · 12 external · 20 broken
Images
10 total · 0 missing alt
Scripts / Styles
3 scripts · 4 stylesheets
JS / CSS size
7.0 KB · 1.0 KB
Page size
131 KB
Robots.txt & Sitemap
- robots.txt
- Not found
- Disallow rules
- 0
- sitemap.xml
- Not found
- URLs in sitemap
- 0
SEO issues
- No H1 heading found
- robots.txt not found
- sitemap.xml not found
Accessibility issues
- No H1 heading found
Scan details
- Requested URL
- https://web.dev
- Final URL
- https://web.dev
- HTTP status
- 200
- HTTP version
- HTTP/2
- Response time
- 596 ms
- HTML size
- 131 KB
- Redirect chain
- https://web.dev
See something wrong on this report? Request a correction
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Frequently asked questions
- What technology does web.dev use?
- web.dev is built with Google Analytics.
- Is web.dev secure (HTTPS)?
- Yes. web.dev uses TLS 1.3 with a certificate issued by Google Trust Services, valid until Sep 21, 2026.
- Who hosts web.dev?
- Hosting provider information for web.dev is not available yet.
- What is web.dev's SEO score?
- web.dev scored 80/100 for SEO in the latest analysis (great).
- What is web.dev's overall website score?
- web.dev has an overall SiteGraph score of 90/100, combining SEO, performance, security, and accessibility.
- What company operates web.dev?
- web.dev is operated by web.dev. Guidance to build modern web experiences that work in every browser.
- Has web.dev's score changed over time?
- web.dev's overall score has improved by 4 points (from 86 to 90) since Jul 18, 2026.
OpenGraph & Twitter Card
OpenGraph
Twitter Card