What powers slow.co?
Last seen Jun 2026 · 26 technologies across 16 categories
Advertising
Twitter Ads
since May 2024
Analytics
Cloudflare Browser Insights
since Sep 2025
Google Analytics
since Jan 2025
Blogs
Beehiiv
since Sep 2025
Caching
Varnish
since May 2024
CDN
Font scripts
Google Font API
since May 2024
Issue trackers
Sentry
since Sep 2025
JavaScript frameworks
React
since Sep 2025
JavaScript libraries
Miscellaneous
PaaS
GitHub Pages
since May 2024
Performance
Priority Hints
since Dec 2025
Security
Cloudflare Bot Management
since Oct 2024
PerimeterX
since Sep 2025
UI frameworks
Web frameworks
Remix
since Sep 2025
Webmail
Google Workspace
since May 2024
AI Crawlers
Doesn't mention any of the 33 AI crawlers we track in its robots.txt; all are allowed by default. Checked Sep 2026.
- robots.txt found
- llms.txt not found
- ai.txt not found
AI Crawlers
No AI crawlers blocked
Audience
- 91% desktop
- 10% phone
United States
Where the site's Chrome visitors come from, largest estimated audience first.
Open Page Rank
4.69 / 10 · ranked #338,641 of all domains
103 referring domains · OpenPageRank
Core Web Vitals
| LCP | 0.6 s |
| CLS | 0 |
| TTFB | 300 ms |
Real user p75, Chrome UX Report, Aug 2026.
Page
- Language: English
- CDN: Fastly
- Weight: 1.1 MB · 20 requests
Homepage as crawled by the HTTP Archive, Sep 2026.
Subdomains
| Host | Techs |
|---|---|
| snailmail.slow.co | 16 |
| slow.co | 15 |
Full technology history →
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Recent changes
- dropped Amazon ALB Mar 2026
- dropped Amazon Web Services Mar 2026
- dropped Amazon S3 Feb 2026
- dropped Heroku Feb 2026
- dropped Stripe Feb 2026