Audit complete
SEO results for https://github.com/
60 SEO checks ran across on-page, technical, security, performance, mobile, and analytics.
A+
90
/100
Overall SEO Score
https://github.com/
Excellent — your site is well-optimized.
50Passed
7To Improve
3Must 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
W3C HTML Validity
129 W3C HTML errors. Significant markup issues — may affect parser/crawler behavior.
CRITICAL
Performance
Browser Caching
Static asset https://github.githubassets.com/favicons/favicon.svg has no Cache-Control or Expires header. Every revisit re-downloads it. Add far-future cache headers via Apache/Nginx config or a CDN.
CRITICAL
Performance
External Resources
105 external files. Bundle and minify to improve load time significantly.
MEDIUM
On-Page SEO
Meta Description
Description is 186 characters — may be truncated on mobile SERPs. Aim for 140–160.
Use our Meta Tag Generator →
MEDIUM
On-Page SEO
H1 Heading
Found 4 H1 headings. Best practice is exactly one H1 per page.
Fix all 3 critical issues faster with Baaed FREE SEO Suite Pro
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Category Scores
📱 Mobile
2 checks · 100/100
📝 On-Page SEO
18 checks · 86/100
🔒 Security
9 checks · 100/100
📊 Analytics
3 checks · 83/100
🔧 Technical SEO
16 checks · 94/100
⚡ Performance
12 checks · 79/100
Brand & Visual
A live snapshot of how the site looks today.
github.com
Join the world's most widely adopted, AI-powered developer platform where millions of developers, businesses, and the largest open source community build software that advances humanity.
Domain Identity & Registration
Public RDAP record for github.com
Registrar
MarkMonitor Inc.
Domain Age
18 years, 7 mo
Created
Oct 9, 2007
Expires
Oct 9, 2026
127 days left
Authoritative Nameservers
dns1.p08.nsone.netdns2.p08.nsone.netdns3.p08.nsone.netdns4.p08.nsone.netns-1283.awsdns-32.orgns-1707.awsdns-21.co.ukns-421.awsdns-52.comns-520.awsdns-01.net
Registry Status Flags
client delete prohibited
client transfer prohibited
client update prohibited
Network & Hosting
Where the site lives — IPs, hosting provider, geographic location, and full DNS records.
IPv4
140.82.112.4
IPv6
No IPv6
Hosting Provider
—
CDN / WAF
Direct (no CDN detected)
Reverse DNS
lb-140-82-112-4-iad.github.com
Location
San Francisco, California, United States
US
ISP
Github, Inc.
ASN
AS36459 Github, Inc.DNS Records
A
140.82.112.4
MX
0 · github-com.mail.protection.outlook.com
NS
dns1.p08.nsone.netdns2.p08.nsone.netdns3.p08.nsone.netdns4.p08.nsone.netns-1283.awsdns-32.orgns-1707.awsdns-21.co.ukns-421.awsdns-52.comns-520.awsdns-01.net
TXT
adobe-idp-site-verification=b92c9e999aef825edc36e0a3d847d2dbad5b2fc0e05c79ddd7a16139b48ecf4bapple-domain-verification=RyQhdzTl6Z6x8ZP4atlassian-domain-verification=jjgw98AKv2aeoYFxiL/VFaoyPkn3undEssTRuMg6C/3Fp/iqhkV4HVV7WjYlVeF8calendly-site-verification=at0DQARi7IZvJtXQAWhMqpmIzpvoBNF7aam5VKKxPdocusign=087098e3-3d46-47b7-9b4e-8a23028154cdfacebook-domain-verification=39xu4jzl7roi7x0n93ldkxjiaarx50google-site-verification=82Le34Flgtd15ojYhHlGF_6g72muSjamlMVThBOJpksgoogle-site-verification=UTM-3akMgubp6tQtgEuAkYNYLyYAvpTnnSrDMWoDR3ojamf-site-verification=XtaPNIYghF_e_xRDI8CjgQkrisp-domain-verification=ZlyiK7XLhnaoUQb2hpak1PLY7dFkl1WEloom-site-verification=f3787154f1154b7880e720a511ea664dmiro-verification=d2e174fdb00c71e0bcf58f8e58c3da2dd80dcfa9shopify-verification-code=t1YPwcmvnxZyBycaCpk1MPyWoFs72ostripe-verification=f88ef17321660a01bab1660454192e014defa29ba7b8de9633c69d6b4912217fv=spf1 ip4:192.30.252.0/22 include:spf.protection.outlook.com include:_netblocks.google.com include:_netblocks2.google.com include:mail.zendesk.com include:_spf.salesforce.com include:servers.mcsv.net include:mktomail.co...00Dd0000000hHE0=1TBKg000000TN2rMS=6BF03E6AF5CB689E315FB6199603BABF2C88D805MS=ms44452932MS=ms58704441TAILSCALE-xOzoDvFUzZr5YYVCQFuD
SOA
- Primary:
ns-1707.awsdns-21.co.uk - Email:
awsdns-hostmaster.amazon.com - Serial:
1
Running check…
Something went wrong.
SSL & Security
TLS certificate, HTTP security headers, and reputation checks.
Certificate Status
Valid
63 days left
Subject (CN)
github.comIssuer
Sectigo Public Server Authentication CA DV E36
Valid From → To
May 5, 2026
→
Aug 2, 2026
Wildcard
No
Self-signed
No
2 Subject Alternative Names
github.comwww.github.com
Running check…
Something went wrong.
Running check…
Something went wrong.
Running check…
Something went wrong.
TLD Variants & Brand Protection
Same brand on other top-level domains. All eight checked TLDs are taken.
.com
Audited
github.com
.net
Unknown
github.net
.org
Unknown
github.org
.co
Unknown
github.co
.io
Unknown
github.io
.ai
Unknown
github.ai
.app
Unknown
github.app
.dev
Unknown
github.dev
Running check…
Something went wrong.
Site History
When was this site first seen on the public web? One click to scan the Wayback Machine.
Running check…
Something went wrong.
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://github.com/
GitHub · Change is constant. GitHub keeps you ahead. · GitHub
Join the world's most widely adopted, AI-powered developer platform where millions of developers, businesses, and the largest open source community build softwa
Keep titles under 60 chars · descriptions 140–160 chars for best display.
☀ Keyword Cloud
data (115)
home (107)
link (708)
tags (176)
text (91)
type (857)
webp (70)
asset (108)
entry (287)
image (80)
space (354)
title (143)
fields (177)
github (87)
locale (177)
master (176)
content (92)
copilot (120)
concepts (176)
customer (70)
linktype (672)
metadata (176)
nodetype (111)
revision (176)
createdat (176)
updatedat (176)
aevphvgewt (212)
contenttype (316)
environment (354)
publishedversion (176)
Top body terms sized by frequency. These are what search engines consider your core topic.
2At-a-Glance StatsPrivacy · Presence
✉ Email Privacy
Protected
✓ No plain-text emails found on the page.
📰 Social Profiles
0 linked
No social profile links found. Add them for brand-signal SEO.
📦 Page Weight
124 KB
Total HTML transferred. Aim under 1 MB for fast first paint.
⚡ Response Time
51 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.
https://github.githubassets.com/assets/particles-170bd1fd231f4669.png
//images.ctfassets.net/8aevphvgewt8/1Dt1ncaR6ZM4dQvknFzfBI/e5c2092be5bd53881622eced4fd37564/accordion-1-ce487d44c0bf.webp
//images.ctfassets.net/8aevphvgewt8/1uXZYDy7dMcH9QwxuAU06F/1cb167cc60d725b8cf7089faf9a4ed06/accordion-2-730955545f07.webp
//images.ctfassets.net/8aevphvgewt8/3xzVZaJhqo3B62R8NeHjX2/e37c81e4f26e9dac2aff1f23a0243087/accordion-3-52ca331d22ea.webp
//images.ctfassets.net/8aevphvgewt8/3cgNgdKFqflI27vyDh4Gpa/c459dc8690133e7663b8db2626cf2045/accordion-4-a26744b70ff7.webp
https://github.githubassets.com/assets/particles-170bd1fd231f4669.png
🔗 In-Page Links
140total
Show link details →
Showing first 30 of 80 links.
4Deep DiveClick to expand any row
📄 Heading Structure 4 H1s 10 H2 16 H3 ▾
4
<H1>
10
<H2>
16
<H3>
0
<H4>
0
<H5>
0
<H6>
H1 text: Search code, repositories, users, issues, pull requests...
🌐 Language Declared: en ▾
Declared (html lang)en
All Metrics
- All (60)
- ⚠ Issues (10)
- Mobile
- On-Page SEO
- Security
- Analytics
- Technical SEO
- Performance
W3C HTML Validity
fail
129 W3C HTML errors. Significant markup issues — may affect parser/crawler behavior.
Browser Caching
fail
Static asset https://github.githubassets.com/favicons/favicon.svg has no Cache-Control or Expires header. Every revisit re-downloads it. Add far-future cache headers via Apache/Nginx config or a CDN.
External Resources
fail
105 external files. Bundle and minify to improve load time significantly.
Meta Description
warn
Description is 186 characters — may be truncated on mobile SERPs. Aim for 140–160.
Use our Meta Tag Generator →
H1 Heading
warn
Found 4 H1 headings. Best practice is exactly one H1 per page.
Custom 404 Page
warn
Page returns 404 but the body is only 9 bytes. Add a branded custom 404 page to keep visitors engaged.
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 →
Google Analytics
warn
No Google Analytics detected. Without analytics you can't measure traffic or conversions.
Structured Data Richness
warn
No schema types detected.
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, 61 characters. Good: "GitHub · Change is constant. GitHub keeps you ahead. · GitHub"
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 H2:10 H3:16 H4:0 H5:0 H6:0.
Image Alt Text
pass
All 24 images have alt text. Excellent for accessibility and SEO.
Internal vs External Links
pass
127 internal, 13 external. Internal link ratio is healthy (91%).
Follow / Nofollow
pass
140 dofollow, 0 nofollow. Link equity flows through dofollow links to linked pages.
Canonical URL
pass
Canonical tag present: https://github.com
Language Attribute
pass
Page declares lang="en".
Character Encoding
pass
UTF-8 charset declared — correct modern default.
DOCTYPE
pass
HTML5 DOCTYPE declared correctly.
Text to HTML Ratio
pass
Text/HTML ratio: 24.7% — healthy content-to-markup balance.
Total Link Count
pass
140 links on page.
Author Meta
pass
No author meta tag. Optional — relevant for blogs and news sites.
Readability Proxy
pass
Average sentence length ~26 words — good readability range.
Viewport Meta Tag
pass
Responsive viewport declared: width=device-width.
Robots Meta Tag
pass
No restrictive robots meta — default is index,follow (good).
robots.txt
pass
robots.txt is present at https://github.com/robots.txt.
Structured Data (Schema)
pass
Structured data present — RDFa detected. Eligible for rich results.
Open Graph Tags
pass
All core Open Graph tags present (title, description, image, url, type).
Twitter Card
pass
Twitter Card configured: type "summary_large_image".
AMP
pass
Page is not AMP. This is fine — AMP is optional and declining in Google's ranking signals.
Favicon
pass
Favicon declared: https://github.githubassets.com/favicons/favicon.svg.
Hreflang
pass
8 hreflang alternates declared.
ads.txt
pass
No ads.txt file. This is optional — add one only if you monetize via programmatic display ads.
Server IP / Location
pass
Resolved to 140.82.112.4.
Server Location / Host
pass
Hosting provider: Unknown (rDNS:
lb-140-82-112-4-iad.github.com).
www / non-www canonical
pass
www redirects to apex. Single canonical hostname configured correctly.
Domain Age
pass
Registered 2007-10-09 (18 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: "github.com".
X-Powered-By Disclosure
pass
No X-Powered-By header — good.
security.txt
pass
security.txt file present — RFC 9116 standard for security contact info.
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: 51ms. Well under Google's 800ms target.
Page Size
pass
Page weight: 124 KB. Lightweight — good for mobile users on slow connections.
Compression
pass
Gzip compression active. Consider upgrading to Brotli for ~15-20% smaller responses.
HTTP Version
pass
Serving over HTTP/2 — multiplexed and modern.
Inline <script> Tags
pass
No inline scripts — excellent for CSP and caching.
Iframes
pass
No iframes — keeps load time predictable.
Image Count
pass
24 images.
Broken Link Check
pass
Crawled 1 internal links — all returned a 2xx/3xx response.
Run full broken-links scan →
Mobile Viewport
pass
Mobile viewport correctly configured.
Flash Content
pass
No Flash content — good, Flash has been discontinued since 2020.
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.