What powers readaloud.app?
Last seen Aug 2026 · 16 technologies across 13 categories
Advertising
Twitter Ads
since Jul 2021
Analytics
Google Analytics
since Apr 2019
Caching
Varnish
since Apr 2019
CDN
JavaScript libraries
Miscellaneous
Open Graph
since Sep 2022
PaaS
Amazon Web Services
since Aug 2022
GitHub Pages
since Apr 2019
Programming languages
Ruby
since Apr 2019
Security
Cloudflare Bot Management
since Mar 2025
Tag managers
Google Tag Manager
since Apr 2019
Web frameworks
Ruby on Rails
since Apr 2019
Webmail
Google Workspace
since Aug 2022
Widgets
Twitter
since Apr 2019
AI Crawlers
No robots.txt, so all AI crawlers are allowed by default. Checked Sep 2026.
- robots.txt not found
- llms.txt not found
- ai.txt not found
AI Crawlers
No robots.txt, all AI crawlers allowed
Audience
- 66% desktop
- 34% phone
United States
India
Where the site's Chrome visitors come from, largest estimated audience first.
Open Page Rank
4.12 / 10 · ranked #492,569 of all domains
44 referring domains · OpenPageRank
Core Web Vitals
| LCP | 1 s |
| INP | 50 ms |
| CLS | 0 |
| TTFB | 1300 ms |
Real user p75, Chrome UX Report, Aug 2026.
Page
- CDN: Fastly
- Weight: 0.6 MB · 19 requests
- Structured data: OpenGraph
Homepage as crawled by the HTTP Archive, Sep 2026.
Infrastructure
- Hosted on Fastly (185.199.108.153)
- DNS: Amazon Route 53
- Email: Google Workspace
- Email security: no SPF record, no DMARC record
- SSL: Let's Encrypt, RSA 2048, expires Nov 2026
- Common Crawl link graph: rank 124,016, 3 hosts
DNS records as swept Sep 2026, certificate as seen Sep 2026. How the web is hosted
Subdomains
| Host | Techs |
|---|---|
| readaloud.app | 13 |
| addon.readaloud.app | 9 |
Full technology history →
Report an incorrect detection
Recent changes
- detected Cloudflare May 2026
- detected Cloudflare Bot Management May 2026
- dropped Cloudflare Nov 2025
- dropped Cloudflare Bot Management Nov 2025