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SGSiteGraph

mos.org

Home | Museum of Science

Last scanned Aug 3, 2026, 5:00 PM · 19 views

89

Overall score

Great

Summary

This website uses Drupal behind Cloudflare CDN. SEO is good (80/100) and accessibility is good (85/100). Security scores excellent (90/100) and performance excellent (100/100). Top issue: Missing meta description.

Top issues to fix

6 issues found · 2 high priority

  • Missing Content-Security-Policy header

    Security

    Add a CSP to control which sources can run scripts — the strongest single defense against XSS.

  • Missing meta description

    SEO

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

  • robots.txt not found

    SEO

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

  • sitemap.xml not found

    SEO

    Publish an XML sitemap and reference it from robots.txt to speed up page discovery.

  • More than 20% of images are missing alt text

    Accessibility

    Add alt attributes to the remaining images (use alt="" for purely decorative ones).

  • 4 broken links on the page

    SEO

    Fix or remove broken links — they waste crawl budget and erode user trust.

80

SEO

3 issue(s) found

100

Performance

692 ms

90

Security

HTTPS & header checks

85

Accessibility

1 issue(s) found

Score history

+3 overall since Jul 26, 2026

Overall
89
SEO
80
Security
90
Performance
100
Accessibility
85

Organization

Company details published in this site's own structured data.

Meta tags

Title
Home | Museum of Science
Description
Canonical
https://www.mos.org
Language
en
Charset
utf-8
Viewport
width=device-width, initial-scale=1.0
Robots meta
Manifest

OpenGraph & Twitter Card

OpenGraph

og:title
Home
og:description
The Museum of Science features a revolving schedule of temporary exhibits, IMAX films, and Planetarium shows, plus details on more than 700 interactive permanent exhibits, live presentations, and more!
og:type
og:url
https://www.mos.org

Twitter Card

twitter:card
summary
twitter:title
Home
twitter:description
The Museum of Science features a revolving schedule of temporary exhibits, IMAX films, and Planetarium shows, plus details on more than 700 interactive permanent exhibits, live presentations, and more!

Technologies

Detected frameworks, languages, and tools.

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
Google Trust Services
Subject
mos.org
Valid from
Jul 26, 2026
Valid to
Oct 24, 2026
Days until expiry
82
SAN domains
mos.org, *.mos.org

Security headers

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

Compression: gzip · 0 cookie(s) observed

Content & assets

Headings

H1 1 · H2 14 · H3 18

Links

84 internal · 16 external · 4 broken

Images

50 total · 19 missing alt

Scripts / Styles

45 scripts · 8 stylesheets

JS / CSS size

7.8 KB · 18.9 KB

Page size

145 KB

Robots.txt & Sitemap

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

SEO issues

  • Missing meta description
  • robots.txt not found
  • sitemap.xml not found

Accessibility issues

  • More than 20% of images are missing alt text

Scan details

Requested URL
https://mos.org
Final URL
https://www.mos.org/
HTTP status
200
HTTP version
HTTP/2
Response time
690 ms
HTML size
145 KB
Redirect chain
https://mos.org → https://www.mos.org/

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Frequently asked questions

What technology does mos.org use?
mos.org is built with Drupal, jQuery, Google Analytics, Cloudflare Analytics, Google Ads, Meta Pixel, TikTok Pixel.
Is mos.org secure (HTTPS)?
Yes. mos.org uses TLS 1.3 with a certificate issued by Google Trust Services, valid until Oct 24, 2026.
Who hosts mos.org?
Hosting provider information for mos.org is not available yet.
What is mos.org's SEO score?
mos.org scored 80/100 for SEO in the latest analysis (great).
What is mos.org's overall website score?
mos.org has an overall SiteGraph score of 89/100, combining SEO, performance, security, and accessibility.
Has mos.org's score changed over time?
mos.org's overall score has improved by 3 points (from 86 to 89) since Jul 26, 2026.