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SGSiteGraph

nih.gov

Just a moment...

Last scanned Jul 29, 2026, 12:00 PM · 26 views

83

Overall score

Great

Summary

SEO is fair (50/100) and accessibility is excellent (90/100). Security scores excellent (100/100) and performance excellent (100/100). Top issue: Missing meta description.

Top issues to fix

7 issues found · 2 high priority

  • Missing meta description

    SEO

    Add a ~150-character meta description to control your search-result snippet and lift click-through rate.

  • No H1 heading found

    SEO

    Add exactly one H1 describing the page's main topic — it anchors the document outline for search engines and screen readers.

  • Missing canonical link

    SEO

    Add <link rel="canonical"> so search engines know which URL variant to index.

  • No structured data (JSON-LD) found

    SEO

    Add JSON-LD (Organization, Article, Product…) to become eligible for rich results.

  • Missing OpenGraph tags

    SEO

    Add og:title/og:description/og:image so shared links render a proper preview card.

  • robots.txt not found

    SEO

    Publish /robots.txt with a Sitemap: directive to guide crawlers.

+1 more issue — details in the sections below.

50

SEO

7 issue(s) found

100

Performance

560 ms

100

Security

HTTPS & header checks

90

Accessibility

1 issue(s) found

Score history

-5 overall since Jul 15, 2026

Overall
83
SEO
50
Security
100
Performance
100
Accessibility
90

Meta tags

Title
Just a moment...
Description
Canonical
Language
en-US
Charset
UTF-8
Viewport
width=device-width,initial-scale=1
Robots meta
noindex,nofollow
Manifest

OpenGraph & Twitter Card

OpenGraph

og:title
—
og:description
—
og:type
—
og:url
—

Twitter Card

twitter:card
—
twitter:title
—
twitter:description
—

Technologies

Detected frameworks, languages, and tools.

No technologies detected.

Hosting & CDN

Hosting provider
—
CDN provider
Cloudflare
IP address
—
ASN
—

DNS records

TypeValue
A—
AAAA—
MX—
TXT—
NS—
CAA—
CNAME—
IPv6 supportNo

TLS / SSL certificate

Version
TLS 1.3
Issuer
Let's Encrypt
Subject
nih.gov
Valid from
Jul 25, 2026
Valid to
Oct 23, 2026
Days until expiry
86
SAN domains
*.nih.gov, nih.gov

Security headers

  • Strict-Transport-SecurityEnabled
  • Content-Security-PolicyEnabled
  • X-Frame-OptionsEnabled
  • X-Content-Type-OptionsEnabled
  • Referrer-PolicyEnabled
  • Permissions-PolicyEnabled

Compression: gzip · 1 cookie(s) observed

Content & assets

Headings

H1 0 · H2 0 · H3 0

Links

0 internal · 0 external · 0 broken

Images

0 total · 0 missing alt

Scripts / Styles

1 scripts · 0 stylesheets

JS / CSS size

3.0 KB · 1.2 KB

Page size

5.4 KB

Robots.txt & Sitemap

robots.txt
Not found
Disallow rules
0
sitemap.xml
Not found
URLs in sitemap
0

SEO issues

  • Missing meta description
  • Missing canonical link
  • No H1 heading found
  • No structured data (JSON-LD) found
  • Missing OpenGraph tags
  • robots.txt not found
  • sitemap.xml not found

Accessibility issues

  • No H1 heading found

Scan details

Requested URL
https://nih.gov
Final URL
https://www.nih.gov/
HTTP status
403
HTTP version
HTTP/2
Response time
560 ms
HTML size
5.4 KB
Redirect chain
https://nih.gov → https://www.nih.gov/

See something wrong on this report? Request a correction

Frequently asked questions

What technology does nih.gov use?
We did not detect any specific technologies for nih.gov in the latest scan.
Is nih.gov secure (HTTPS)?
Yes. nih.gov uses TLS 1.3 with a certificate issued by Let's Encrypt, valid until Oct 23, 2026.
Who hosts nih.gov?
Hosting provider information for nih.gov is not available yet.
What is nih.gov's SEO score?
nih.gov scored 50/100 for SEO in the latest analysis (fair).
What is nih.gov's overall website score?
nih.gov has an overall SiteGraph score of 83/100, combining SEO, performance, security, and accessibility.
Has nih.gov's score changed over time?
nih.gov's overall score has declined by 5 points (from 88 to 83) since Jul 15, 2026.