What powers librivox.app?
Last seen Sep 2026 · 12 technologies across 12 categories
Advertising
Google AdSense
since Feb 2020
Analytics
Google Analytics
since Feb 2020
CDN
Google Hosted Libraries
since Feb 2022
Cookie compliance
Funding Choices
since Sep 2023
Font scripts
Google Font API
since Nov 2022
IaaS
Google Cloud
since Apr 2022
JavaScript libraries
Performance
Google Cloud Trace
since Apr 2022
Programming languages
Java
since Feb 2022
Security
reCAPTCHA
since Apr 2022
UI frameworks
Webmail
Google Workspace
since May 2026
AI Crawlers
Doesn't mention any of the 33 AI crawlers we track in its robots.txt; all are allowed by default. Checked Oct 2026.
- robots.txt found
- llms.txt not found
- ai.txt not found
AI Crawlers
No AI crawlers blocked
Audience
- 54% desktop
- 46% phone
United States
Where the site's Chrome visitors come from, largest estimated audience first.
Open Page Rank
2.91 / 10 · ranked #1,745,093 of all domains
11 referring domains · OpenPageRank
Core Web Vitals
| LCP | 1.1 s |
| INP | 50 ms |
| CLS | 0 |
| TTFB | 600 ms |
Real user p75, Chrome UX Report, Sep 2026.
Page
- Language: English
- Weight: 0.9 MB · 76 requests
Homepage as crawled by the HTTP Archive, Oct 2026.
Infrastructure
- Hosted on Google (216.239.32.21, IPv6)
- DNS: Google Cloud DNS
- Email: no MX record returned, SPF names Google Workspace
- Email security: SPF (soft fail), DMARC monitor only, DNSSEC signed
- SSL: Google Trust Services, RSA 2048, expires Jan 2027
- Common Crawl link graph: rank 138,888, 2 hosts
- Verified with: Google
DNS records as swept Oct 2026, certificate as seen Oct 2026. How the web is hosted
Full technology history →
Report an incorrect detection
Recent changes
- detected Google Font API Sep 2026
- dropped Sendgrid Jun 2026
- dropped Google Font API May 2026
- dropped Google Tag Manager May 2026
- detected Google Workspace May 2026
- detected Google Font API Mar 2026
- detected Sendgrid Mar 2026
- dropped Google Font API Feb 2026
- detected Google Font API Dec 2025