Audit complete
SEO results for https://stackoverflow.com/questions
60 SEO checks ran across on-page, technical, security, performance, mobile, and analytics.
A+
90
/100
Overall SEO Score
https://stackoverflow.com/questions
Excellent — your site is well-optimized.
46Passed
10To Improve
4Must Fix
⚠
Priority Issues
5 to fix firstThese have the highest impact on your score — fix these first for the biggest improvement.
CRITICAL
On-Page SEO
Meta Description
No meta description tag. Search engines may generate their own snippet from page content.
Use our Meta Tag Generator →
CRITICAL
On-Page SEO
W3C HTML Validity
64 W3C HTML errors. Significant markup issues — may affect parser/crawler behavior.
CRITICAL
Performance
External Resources
35 external files. Bundle and minify to improve load time significantly.
CRITICAL
Performance
Broken Link Check
1 of 1 crawled links returned 4xx/5xx — fix or redirect them. Examples: https://stackoverflow.com.
Run full broken-links scan →
MEDIUM
On-Page SEO
H1 Heading
Found 4 H1 headings. Best practice is exactly one H1 per page.
Fix all 4 critical issues faster with Baaed FREE SEO Suite Pro
Unlimited daily audits, batch export, priority queue, and full access to every fix tool.
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Category Scores
📱 Mobile
2 checks · 100/100
📝 On-Page SEO
18 checks · 75/100
🔒 Security
9 checks · 100/100
📊 Analytics
3 checks · 100/100
🔧 Technical SEO
16 checks · 91/100
⚡ Performance
12 checks · 75/100
Running check…
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Brand & Visual
A live snapshot of how the site looks today.
stackoverflow.com
Stack Overflow | The World’s Largest Online Community for Developers
Domain Identity & Registration
Public RDAP record for stackoverflow.com
Registrar
CSC Corporate Domains, Inc.
Domain Age
22 years, 7 mo
Created
Dec 26, 2003
Expires
Feb 2, 2027
153 days left
Authoritative Nameservers
damian.ns.cloudflare.comsureena.ns.cloudflare.com
Registry Status Flags
client transfer prohibited
Network & Hosting
Where the site lives — IPs, hosting provider, geographic location, and full DNS records.
IPv4
198.252.206.1
IPv6
No IPv6
Hosting Provider
—
CDN / WAF
Cloudflare
Reverse DNS
—
Location
New York City, New York, United States
US
ISP
Cloudflare, Inc.
ASN
AS13335 Stack Exchange, Inc.DNS Records
A
198.252.206.1
MX
1 · aspmx.l.google.com5 · alt1.aspmx.l.google.com5 · alt2.aspmx.l.google.com10 · alt3.aspmx.l.google.com10 · alt4.aspmx.l.google.com
NS
sureena.ns.cloudflare.comdamian.ns.cloudflare.com
TXT
google-site-verification=o3EMam8yBGo1yEjyybIiZcOunGHOQKpo8JmOtp9n1BUgoogle-site-verification=rdWtMbplKjbRHGr2dNONfwkqithlUvjr3u6i8QEz_moibmid=4e7cbbb3-5f12-40b4-96c7-5b064347b822make-domain-verification=eec31159-f381-4f38-9d89-e59123dd023eonetrust-domain-verification=0d9d67f856334905a54256085a5768b3onetrust-domain-verification=e445562296a64c649ae3d520230b8c4copenai-domain-verification=dv-GLNufzbWDzAq0fDXHD6jxeCKprofound-domain-verification-5p599x=hWudYd2Du6WOYOod5ko9Rwnp8v=MCPv1; k=ed25519; p=VhBofO8RaYvTvHT7q5tTty+HQeCU8R6h5Y8k/sj20So=v=spf1 ip4:52.38.191.241 include:_spf1.stackoverflow.com ~allwork-os-domain-verification-43a3e0=GoDUTSc5MMjDaiIC3s5yRKqMDMS=ms52592611ZOOM_verify_AbkNwz5bBl0eurcDKyhhukadobe-idp-site-verification=25ba5203f3687c9cd6ee3223ee5de1528917828d1da3ebd3bd9a44094cbfc4acanthropic-domain-verification-q70207=cKyy0llXkD10O4rDQpWz8tQ5Kapple-domain-verification=O9jlnJXAQ7sNSZqCatlassian-domain-verification=byLeZgl3MIcfOqwWuMhq8Fhr/1zem/jIaouJegvDZbBKUU5OqhwDjdpkyYg5CTzmcursor-domain-verification-sb0ayf=Pk6AyptQuTpzpcuSlfYGWloxvdocker-verification=d65aee54-9091-4ceb-b792-61f5d5804050docusign=4262531d-29f4-4a62-9f33-ae9f66f5247bgoogle-site-verification=2Bi6SYw5skkRexdtdLPL2gpxeIhLxnYVqITVP9Htl3wgoogle-site-verification=ctogLnZNAdc_CXq8yOhODMLpmugGynjxKecKHDz4oL8
SOA
- Primary:
damian.ns.cloudflare.com - Email:
dns.cloudflare.com - Serial:
2410325444
Running check…
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| IP | /24 (Class C) | Reverse DNS |
|---|---|---|
198.252.206.1 |
198.252.206.0/24 |
Want the full neighbour list? The Class C IP Checker accepts up to 40 candidate domains. Open Class C IP Checker →
SSL & Security
TLS certificate, HTTP security headers, and reputation checks.
Certificate Status
Valid
51 days left
Subject (CN)
stackoverflow.comIssuer
YE2
Valid From → To
Jun 17, 2026
→
Sep 15, 2026
Wildcard
Yes
Self-signed
No
2 Subject Alternative Names
*.stackoverflow.comstackoverflow.com
Running check…
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Clean
No listings across 7 zones for
198.252.206.1.
- Spamhaus ZEN Clean
- SpamCop Clean
- Barracuda Clean
- SORBS Clean
- SORBS spam Clean
- UCEPROTECT-1 Clean
- CBL Clean
Running check…
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Unknown
Live Safe Browsing API key isn't configured. Check the public report instead.
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Looks fine
Composite score: 0
No name-shape heuristics flagged this domain.
DNSBL: 0 of 7 zones listed. Open Suspicious Domain Checker →
TLD Variants & Brand Protection
Same brand on other top-level domains. 2 of 8 still available — grab them before a typo-squatter does.
.com
Audited
stackoverflow.com
.net
Unknown
stackoverflow.net
.org
Taken
stackoverflow.org
.ai
Taken
stackoverflow.ai
.app
Taken
stackoverflow.app
.dev
Taken
stackoverflow.dev
Running check…
Something went wrong.
4 grabbable
4 of 10 typo variants are available — register them defensively.
Site History
When was this site first seen on the public web? One click to scan the Wayback Machine.
Deep Research Shelf
15 follow-up tools — every link stays on-site, pre-filled with this domain.
Detailed Breakdown
Key insights, stats, and content signals — organized by importance.
1Key InsightsHow your page looks & reads
🔍 Google SERP Preview
https://stackoverflow.com/questions
Newest Questions - Stack Overflow
Keep titles under 60 chars · descriptions 140–160 chars for best display.
☀ Keyword Cloud
data (36)
quot (27)
true (43)
asked (50)
brand (26)
false (29)
hours (47)
https (38)
score (103)
stack (39)
views (102)
votes (46)
answer (34)
loader (87)
return (48)
script (88)
survey (26)
window (35)
answers (69)
console (91)
options (35)
require (30)
webpack (46)
document (24)
function (44)
classlist (27)
googletag (42)
targeting (30)
reputation (51)
stackoverflow (32)
Top body terms sized by frequency. These are what search engines consider your core topic.
2At-a-Glance StatsPrivacy · Presence
✉ Email Privacy
1 exposed
Scrapers can harvest these for spam. Use a contact form or obfuscate.
📰 Social Profiles
0 linked
No social profile links found. Add them for brand-signal SEO.
📦 Page Weight
74 KB
Total HTML transferred. Aim under 1 MB for fast first paint.
⚡ Response Time
117 ms
Time to first byte from origin server.
3Content & Link SignalsWhat crawlers see on the page
📷 Alt Attribute Issues
0missing
✓ Every image on the page has descriptive alt text. Great for accessibility and image-search SEO.
🔗 In-Page Links
424total
Show link details →
Showing first 30 of 80 links.
4Deep DiveClick to expand any row
📄 Heading Structure 4 H1s 2 H2 53 H3 1 H4 5 H5 ▾
4
<H1>
2
<H2>
53
<H3>
1
<H4>
5
<H5>
0
<H6>
H1 text: Newest Questions
🌐 Language Declared: en ▾
Declared (html lang)en
All Metrics
- All (60)
- ⚠ Issues (14)
- Mobile
- On-Page SEO
- Security
- Analytics
- Technical SEO
- Performance
Meta Description
fail
No meta description tag. Search engines may generate their own snippet from page content.
Use our Meta Tag Generator →
W3C HTML Validity
fail
64 W3C HTML errors. Significant markup issues — may affect parser/crawler behavior.
External Resources
fail
35 external files. Bundle and minify to improve load time significantly.
Broken Link Check
fail
1 of 1 crawled links returned 4xx/5xx — fix or redirect them. Examples: https://stackoverflow.com.
Run full broken-links scan →
H1 Heading
warn
Found 4 H1 headings. Best practice is exactly one H1 per page.
Character Encoding
warn
No character encoding declared. May cause rendering issues for non-ASCII content.
Custom 404 Page
warn
Missing URL returned HTTP 429 instead of 404. Crawlers may interpret soft-404s incorrectly.
Text to HTML Ratio
warn
Text/HTML ratio: 15.8%. Aim for 25%+ for stronger SEO signal.
robots.txt
warn
robots.txt not found (HTTP 418). Add one to control crawler access.
Generate robots.txt with our tool →
XML Sitemap
warn
No sitemap found at standard locations (/sitemap.xml, /sitemap_index.xml) or declared in robots.txt. Generate and submit one to Google Search Console.
Generate XML Sitemap →
Inline <script> Tags
warn
17 inline scripts. Move to external files to enable caching and a stricter CSP.
Server Location / Host
warn
No reverse-DNS — hosting provider could not be inferred.
Inline <style> Tags
warn
2 inline style blocks. A small amount can be fine (critical CSS), but keep it minimal.
Title Tag
pass
Title present, 33 characters. Good: "Newest Questions - Stack Overflow"
Meta Keywords
pass
No meta keywords tag present — this is modern best practice. Google ignores this tag since 2009.
Heading Hierarchy
pass
Logical heading structure: H1:4 H2:2 H3:53 H4:1 H5:5 H6:0.
Image Alt Text
pass
All 50 images have alt text. Excellent for accessibility and SEO.
Internal vs External Links
pass
356 internal, 68 external. Internal link ratio is healthy (84%).
Follow / Nofollow
pass
422 dofollow, 2 nofollow. Link equity flows through dofollow links to linked pages.
Language Attribute
pass
Page declares lang="en".
DOCTYPE
pass
HTML5 DOCTYPE declared correctly.
Total Link Count
pass
424 links on page.
Author Meta
pass
No author meta tag. Optional — relevant for blogs and news sites.
Readability Proxy
pass
Average sentence length ~6 words — good readability range.
Viewport Meta Tag
pass
Responsive viewport declared: width=device-width, height=device-height, initial-scale=1.0, minimum-scale=1.0.
Robots Meta Tag
pass
No restrictive robots meta — default is index,follow (good).
Structured Data (Schema)
pass
Structured data present — JSON-LD: WebSite, Organization, ContactPoint; 5 Microdata items; RDFa detected. Eligible for rich results.
Structured Data Richness
pass
8 distinct schema types — rich signal for search engines.
Open Graph Tags
pass
All core Open Graph tags present (title, description, image, url, type).
Twitter Card
pass
Twitter Card configured: type "summary".
AMP
pass
Page is not AMP. This is fine — AMP is optional and declining in Google's ranking signals.
Favicon
pass
Favicon declared: https://stackoverflow.com/Content/Sites/stackoverflow/Img/favicon.ico?v=562fb39d93c8.
Hreflang
pass
No hreflang tags. This is correct for single-language sites.
ads.txt
pass
ads.txt file present — IAB anti-fraud standard for programmatic ads.
Server IP / Location
pass
Resolved to 198.252.206.1.
www / non-www canonical
pass
www redirects to apex. Single canonical hostname configured correctly.
Domain Age
pass
Registered 2003-12-26 (22 year(s) old). Mature domain — Google trusts age modestly.
HTTPS
pass
Page served over HTTPS. Good for SEO, privacy, and user trust.
HSTS
pass
Strict-Transport-Security header present. Forces HTTPS on future visits.
Content Security Policy
pass
Content-Security-Policy header present. Protects against XSS.
X-Frame-Options / CSP frame-ancestors
pass
Clickjacking protection is in place.
Mixed Content
pass
No mixed content — all resources loaded over HTTPS.
Server Header Disclosure
pass
Server header present but version hidden: "cloudflare".
X-Powered-By Disclosure
pass
No X-Powered-By header — good.
security.txt
pass
No security.txt file. Add /.well-known/security.txt to give security researchers a contact channel.
DNSBL / Spam Blocklist
pass
IP is clean on the 5 major DNSBL zones spot-checked (Spamhaus, SpamCop, Barracuda, SORBS, PSBL).
HTTP Status
pass
Server returned HTTP 200.
Response Time
pass
Fast TTFB: 117ms. Well under Google's 800ms target.
Page Size
pass
Page weight: 74 KB. Lightweight — good for mobile users on slow connections.
Compression
pass
Gzip compression active. Consider upgrading to Brotli for ~15-20% smaller responses.
Browser Caching
pass
No probeable static asset, but the page emits a Cache-Control header (private).
HTTP Version
pass
Serving over HTTP/2 — multiplexed and modern.
Iframes
pass
No iframes — keeps load time predictable.
Image Count
pass
50 images.
Mobile Viewport
pass
Mobile viewport correctly configured.
Flash Content
pass
No Flash content — good, Flash has been discontinued since 2020.
Google Analytics
pass
Google Analytics 4 (GA4) detected.
Google Tag Manager
pass
No GTM detected. Optional — only worth adding if you run many tracking pixels.
Facebook Pixel
pass
No Facebook Pixel detected. Optional — only worth adding if you run Meta ads and need retargeting.
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About the Website SEO Checker
One audit, every signal that matters: meta tags, headings, alt-text coverage, link balance, HTTPS, security headers, page weight, response time, mobile viewport, structured data, social tags, and more. Each finding includes a fix you can act on — and links to the right free tool when one of ours can repair the issue.
Frequently asked questions
How long does a scan take? #
Most sites complete in under 30 seconds. Sites behind a slow origin or large pages may take up to two minutes.
Why does some site fail to audit? #
Some sites use WAFs (Cloudflare, Akamai, Amazon, Sucuri) that block automated requests. We tell you which one when this happens.
Do you store the URLs I scan? #
Yes — scans are saved so you can come back to them. We do not crawl the URL beyond the single page you submit.