What powers readabilityformulas.com?
Last seen Aug 2026 · 15 technologies across 14 categories
Advertising Networks
Analytics
CDN
CMS
Cookie compliance
Databases
Font scripts
Hosting
JavaScript Frameworks
Programming languages
Security
Tag managers
Web servers
Widgets
AI Crawlers
Doesn't name any of the 33 AI crawlers we track in its robots.txt. Catch-all rules (User-agent: *) restrict some paths for every crawler, AI or not. Checked Sep 2026.
- robots.txt found
- llms.txt not checked
- ai.txt not checked
Top search keywords
| Keyword | Position | Est. monthly visits |
|---|---|---|
| reading level checker | #2 | 580 |
| readability checker | #2 | 580 |
| reading level calculator | #2 | 120 |
| flesch reading ease | #8 | 110 |
| fry graph | #1 | 97 |
| flesch kincaid test | #9 | 81 |
| gunning fog index | #3 | 73 |
| coleman liau index | #2 | 52 |
| fry readability calculator | #1 | 43 |
| fry readability graph | #2 | 39 |
| free readability checker | #2 | 34 |
| free readability checker | #2 | 34 |
| text scoring | #1 | 33 |
| reading ease score | #4 | 32 |
| readable | #17 | 32 |
| readability test | #3 | 31 |
| cloze assessment | #6 | 30 |
| dale chall readability formula | #2 | 28 |
| dale chall | #2 | 28 |
| fry formula | #2 | 26 |
| readability tool | #3 | 25 |
| smog simple | #3 | 25 |
| define dale | #93 | 25 |
| flesch kincaid calculator | #9 | 24 |
| determine reading level of text | #2 | 23 |
The site's top keywords in Google (US), with the visits each one is estimated to bring per month.
Top backlinks
Top links pointing at the site, one per source domain, strongest first. The anchor text opens the page carrying the link.
AI Crawlers
No AI crawlers blocked
Audience
- 90% desktop
- 10% phone
United States
Australia
Canada
Philippines
India
Where the site's Chrome visitors come from, largest estimated audience first.
Open Page Rank
6.13 / 10 · ranked #101,140 of all domains
352 referring domains · OpenPageRank
Search traffic
3,500 est. monthly organic visits (US)
1,519 keywords in Google's top 30
Core Web Vitals
| LCP | 2.4 s |
| INP | 125 ms |
| CLS | 0.2 |
| TTFB | 900 ms |
Real user p75, Chrome UX Report, Aug 2026.
Page
- Weight: 4.5 MB · 116 requests
Homepage as crawled by the HTTP Archive, Sep 2026.
Infrastructure
- Hosted on Network Solutions (192.185.48.159)
- Email: readabilityformulas.com
- Email security: no SPF record, no DMARC record
- SSL: Let's Encrypt, RSA 2048, wildcard, expires Oct 2026
- Common Crawl link graph: rank 20,130, 3 hosts
DNS records as swept Sep 2026, certificate as seen Sep 2026. How the web is hosted
Subdomains
| Host | Techs |
|---|---|
| readabilityformulas.com | 13 |
| www.readabilityformulas.com | 8 |
Full technology history →
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Recent changes
- detected Google Font API Aug 2026
- dropped Snowplow Analytics Jun 2026
- dropped Google Font API May 2026
- detected Snowplow Analytics Apr 2026
- detected Google Font API Nov 2025