What technology does gutenberg.org use?

gutenberg.org is built with Apache.

Is gutenberg.org secure (HTTPS)?

Yes. gutenberg.org uses TLS 1.3 with a certificate issued by Network Solutions L.L.C., valid until Nov 14, 2026.

Who hosts gutenberg.org?

gutenberg.org is hosted on UNC-CH - University of North Carolina at Chapel Hill, US.

What is gutenberg.org's SEO score?

gutenberg.org scored 70/100 for SEO in the latest analysis (fair).

What is gutenberg.org's overall website score?

gutenberg.org has an overall SiteGraph score of 82/100, combining SEO, performance, security, and accessibility.

gutenberg.org

Free eBooks | Project Gutenberg

Last scanned Jul 18, 2026, 8:49 PM

Overall score

Great

Top issues to fix

8 issues found · 3 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.
Missing X-Content-Type-Options header
Security
Add X-Content-Type-Options: nosniff to stop MIME-sniffing attacks.
Missing X-Frame-Options header
Security
Add X-Frame-Options (or a CSP frame-ancestors rule) to prevent clickjacking via hidden iframes.
Missing canonical link
SEO
Add <link rel="canonical"> so search engines know which URL variant to index.

+2 more issues — details in the sections below.

Summary

This website uses Apache hosted on UNC-CH - University of North Carolina at Chapel Hill, US. SEO is fair (70/100) and accessibility is excellent (100/100). Security scores fair (65/100) and performance excellent (100/100). Top issue: Missing meta description.

SEO

4 issue(s) found

100

Performance

243 ms

Security

HTTPS & header checks

100

Accessibility

0 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.

Organization

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

Facebook Facebook

Contact

Email, phone, and address published on this site's own pages.

Source: https://gutenberg.org/about/contact_information.html

Technologies

Detected frameworks, languages, and tools.

Apache

Hosting & CDN

Hosting provider: UNC-CH - University of North Carolina at Chapel Hill, US
CDN provider: —
IP address: 152.19.134.47
ASN: AS36850 (UNC-CH - University of North Carolina at Chapel Hill, US)

DNS records

Type	Value
A	152.19.134.47
AAAA	2610:28:3090:3000:0:bad:cafe:47
MX	aspmx4.googlemail.com aspmx2.googlemail.com aspmx3.googlemail.com alt1.aspmx.l.google.com alt2.aspmx.l.google.com aspmx.l.google.com aspmx5.googlemail.com
TXT	google-site-verification=Pdx3wFBIiPEEeFgk1mMu_nljd4YYt6W7royvvBURaSU
NS	ns2.unc.edu ns.unc.edu
CAA	—
CNAME	—
IPv6 support	Yes

TLS / SSL certificate

Version: TLS 1.3
Issuer: Network Solutions L.L.C.
Subject: *.gutenberg.org
Valid from: Oct 14, 2025
Valid to: Nov 14, 2026
Days until expiry: 119
SAN domains: *.gutenberg.org, gutenberg.org

Security headers

Strict-Transport-SecurityMissing
Content-Security-PolicyMissing
X-Frame-OptionsMissing
X-Content-Type-OptionsMissing
Referrer-PolicyMissing
Permissions-PolicyMissing

Compression: gzip · 0 cookie(s) observed

Content & assets

Headings

H1 1 · H2 0 · H3 8

Links

59 internal · 11 external · 0 broken

Images

28 total · 0 missing alt

Scripts / Styles

0 scripts · 1 stylesheets

JS / CSS size

0 B · 72.1 KB

Page size

25.4 KB

Robots.txt & Sitemap

robots.txt: Found
Disallow rules: 1
sitemap.xml: Not found
URLs in sitemap: 0

SEO issues

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

Scan details

Requested URL: https://gutenberg.org
Final URL: https://gutenberg.org
HTTP status: 200
HTTP version: HTTP/2
Response time: 243 ms
HTML size: 25.4 KB
Redirect chain: https://gutenberg.org

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