libraries.io
Libraries.io - security & maintenance data for open source software
Last scanned Jul 26, 2026, 5:34 AM
Overall score
Great
Summary
Discover open source packages, modules and frameworks you can use in your code. This website uses Google Analytics hosted on Google Cloud. SEO is good (85/100) and accessibility is fair (70/100). Security scores excellent (90/100) and performance excellent (100/100). Top issue: Title longer than 60 characters.
Libraries.io
Discover open source packages, modules and frameworks you can use in your code
- United States
- Hosted on Google Cloud
Top issues to fix
6 issues found · 2 high priority
Missing Content-Security-Policy header
SecurityAdd a CSP to control which sources can run scripts — the strongest single defense against XSS.
Over half of images are missing alt text
AccessibilityAdd alt attributes to images — screen readers depend on them, and they help image SEO.
Title longer than 60 characters
SEOShorten the title to under 60 characters so search results don't truncate it.
Missing canonical link
SEOAdd <link rel="canonical"> so search engines know which URL variant to index.
sitemap.xml not found
SEOPublish an XML sitemap and reference it from robots.txt to speed up page discovery.
11 broken links on the page
SEOFix or remove broken links — they waste crawl budget and erode user trust.
SEO
3 issue(s) found
Performance
371 ms
Security
HTTPS & header checks
Accessibility
1 issue(s) found
Organization
Company details published in this site's own structured data.
Libraries.io
Discover open source packages, modules and frameworks you can use in your code
Contact
Email, phone, and address published on this site's own pages.
- support@libraries.io
Meta tags
- Title
- Libraries.io - security & maintenance data for open source software
- Description
- Discover open source packages, modules and frameworks you can use in your code.
- Canonical
- Language
- en
- Charset
- Viewport
- width=device-width, initial-scale=1
- Robots meta
- Manifest
Technologies
Detected frameworks, languages, and tools.
Hosting & CDN
- Hosting provider
- Google Cloud
- CDN provider
- —
- IP address
- 35.244.128.241
- ASN
- AS396982 (GOOGLE-CLOUD-PLATFORM - Google LLC, US)
DNS records
| Type | Value |
|---|---|
| A |
|
| AAAA | — |
| MX |
|
| TXT |
|
| NS |
|
| CAA |
|
| CNAME | — |
| IPv6 support | No |
TLS / SSL certificate
- Version
- TLS 1.3
- Issuer
- Google Trust Services
- Subject
- libraries.io
- Valid from
- Jun 29, 2026
- Valid to
- Sep 27, 2026
- Days until expiry
- 63
- SAN domains
- libraries.io, *.libraries.io
Security headers
- Strict-Transport-SecurityEnabled
- Content-Security-PolicyMissing
- X-Frame-OptionsEnabled
- X-Content-Type-OptionsEnabled
- Referrer-PolicyEnabled
- Permissions-PolicyMissing
Compression: none · 1 cookie(s) observed
Content & assets
Headings
H1 1 · H2 4 · H3 0
Links
45 internal · 24 external · 11 broken
Images
2 total · 2 missing alt
Scripts / Styles
5 scripts · 1 stylesheets
JS / CSS size
312 KB · 148 KB
Page size
25.0 KB
Robots.txt & Sitemap
- robots.txt
- Found
- Disallow rules
- 16
- sitemap.xml
- Not found
- URLs in sitemap
- 0
SEO issues
- Title longer than 60 characters
- Missing canonical link
- sitemap.xml not found
Accessibility issues
- Over half of images are missing alt text
Scan details
- Requested URL
- https://libraries.io
- Final URL
- https://libraries.io
- HTTP status
- 200
- HTTP version
- HTTP/2
- Response time
- 371 ms
- HTML size
- 25.0 KB
- Redirect chain
- https://libraries.io
See something wrong on this report? Request a correction
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Frequently asked questions
- What technology does libraries.io use?
- libraries.io is built with Ruby on Rails, Google Analytics.
- Is libraries.io secure (HTTPS)?
- Yes. libraries.io uses TLS 1.3 with a certificate issued by Google Trust Services, valid until Sep 27, 2026.
- Who hosts libraries.io?
- libraries.io is hosted on Google Cloud.
- What is libraries.io's SEO score?
- libraries.io scored 85/100 for SEO in the latest analysis (great).
- What is libraries.io's overall website score?
- libraries.io has an overall SiteGraph score of 87/100, combining SEO, performance, security, and accessibility.
- What company operates libraries.io?
- libraries.io is operated by Libraries.io. Discover open source packages, modules and frameworks you can use in your code
OpenGraph & Twitter Card
OpenGraph
Twitter Card