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SGSiteGraph

lumendatabase.org

Lumen

Last scanned Jul 26, 2026, 5:17 AM · 2 views

70

Overall score

Fair

Summary

This website uses Nginx hosted on HARVARD-UNIV - Harvard University, US. SEO is fair (65/100) and accessibility is fair (60/100). Security scores good (80/100) and performance good (75/100). Top issue: Missing meta description.

United States
Hosted on HARVARD-UNIV - Harvard University, US

Top issues to fix

11 issues found · 4 high priority

  • Missing Strict-Transport-Security header

    Security

    Add HSTS so browsers always use HTTPS — this closes the protocol-downgrade attack window.

  • 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.

  • Over half of images are missing alt text

    Accessibility

    Add alt attributes to images — screen readers depend on them, and they help image SEO.

  • 2 cookies without Secure/HttpOnly flags

    Security

    Set Secure and HttpOnly on session cookies so they can't leak over HTTP or be read by injected scripts.

  • Missing canonical link

    SEO

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

+5 more issues — details in the sections below.

65

SEO

5 issue(s) found

75

Performance

461 ms

80

Security

HTTPS & header checks

60

Accessibility

2 issue(s) found

Not enough scan history yet to show a trend — check back after this site has been re-scanned a few more times.

Meta tags

Title
Lumen
Description
Canonical
Language
Charset
utf-8
Viewport
width=device-width, initial-scale=1.0
Robots meta
NOODP
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.

Ruby on RailsNginx

Hosting & CDN

CDN provider
—
IP address
128.103.64.94
ASN
AS1742 (HARVARD-UNIV - Harvard University, US)

DNS records

TypeValue
A
  • 128.103.64.94
AAAA—
MX
  • mail.lumendatabase.org
TXT
  • v=spf1 mx ip4:128.103.64.64/26 ?all
NS
  • ns-168-c.gandi.net
  • ns-223-b.gandi.net
  • ns-159-a.gandi.net
CAA—
CNAME—
IPv6 supportNo

TLS / SSL certificate

Version
TLS 1.3
Issuer
Let's Encrypt
Subject
eve.law.harvard.edu
Valid from
Jul 1, 2026
Valid to
Sep 29, 2026
Days until expiry
65
SAN domains
api-beta.chillingeffects.org, api-beta.lumendatabase.org, asklumen.com, asklumen.net, asklumen.org, chillingeffects.org, eve.law.harvard.edu, hyperpublic.org, ifrfa.org, images.chillingeffects.org, librarytestkitchen.org, lumendata.org, lumendatabase.com, lumendatabase.net, lumendatabase.org, lumenregister.com, lumenregister.net, lumenregister.org, lumenregistry.com, lumenregistry.net, lumenregistry.org, metalab.harvard.edu, preview.lumendatabase.org, static.chillingeffects.org, www.chillingeffects.org, www.hyperpublic.org, www.ifrfa.org, www.librarytestkitchen.org, www.lumendatabase.org

Security headers

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

Compression: gzip · 2 cookie(s) observed

Content & assets

Headings

H1 1 · H2 2 · H3 0

Links

60 internal · 0 external · 1 broken

Images

4 total · 4 missing alt

Scripts / Styles

3 scripts · 1 stylesheets

JS / CSS size

1.2 MB · 436 KB

Page size

10.1 KB

Robots.txt & Sitemap

robots.txt
Found
Disallow rules
9
sitemap.xml
Not found
URLs in sitemap
0

SEO issues

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

Accessibility issues

  • Over half of images are missing alt text
  • Missing <html lang> attribute

Scan details

Requested URL
https://lumendatabase.org
Final URL
https://lumendatabase.org
HTTP status
200
HTTP version
HTTP/2
Response time
461 ms
HTML size
10.1 KB
Redirect chain
https://lumendatabase.org

See something wrong on this report? Request a correction

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Frequently asked questions

What technology does lumendatabase.org use?
lumendatabase.org is built with Ruby on Rails, Nginx.
Is lumendatabase.org secure (HTTPS)?
Yes. lumendatabase.org uses TLS 1.3 with a certificate issued by Let's Encrypt, valid until Sep 29, 2026.
Who hosts lumendatabase.org?
lumendatabase.org is hosted on HARVARD-UNIV - Harvard University, US.
What is lumendatabase.org's SEO score?
lumendatabase.org scored 65/100 for SEO in the latest analysis (fair).
What is lumendatabase.org's overall website score?
lumendatabase.org has an overall SiteGraph score of 70/100, combining SEO, performance, security, and accessibility.