What powers ck12.org?
Last seen Jun 2026 · 85 technologies across 36 categories
Analytics
Alexa Certified Site Metrics
since Oct 2021
TikTok Pixel
since Feb 2026
Authentication
Apple Sign-in
since Sep 2025
Google Sign-in
since Oct 2021
Blogs
Medium
since Oct 2024
CDN
Amazon CloudFront
since Aug 2018
Amazon S3
since Aug 2018
cdnjs
since Nov 2024
Cloudflare
since Jun 2023
Fastly
since Feb 2023
Google Hosted Libraries
since Apr 2022
jsDelivr
since Aug 2024
CMS
WordPress
since Aug 2018
Databases
MySQL
since Aug 2018
Documentation
Zendesk
since Aug 2022
Amazon SES
since Aug 2022
Font scripts
Font Awesome
since Jun 2023
Google Font API
since Oct 2019
Issue trackers
Atlassian Statuspage
since Feb 2023
JavaScript frameworks
React
since Sep 2019
JavaScript graphics
JavaScript Libraries
Live chat
WhatsApp Business Chat
since Jan 2025
Load balancers
Amazon ALB
since Apr 2026
Maps
Google Maps
since Apr 2018
Marketing automation
Mautic
since Nov 2018
Miscellaneous
Google Code Prettify
since Feb 2023
HTTP/3
since Jan 2023
Open Graph
since Sep 2022
PWA
since May 2025
RSS
since Feb 2023
Twitter Emoji (Twemoji)
since Aug 2018
Webpack
since Jan 2019
Mobile frameworks
jQuery-pjax
since Jan 2019
Operating systems
Ubuntu
since Jun 2018
PaaS
Amazon Web Services
since Jan 2019
Page builders
Webflow
since Jun 2024
Payment processors
Braintree
since Aug 2018
Performance
Priority Hints
since Sep 2024
Programming Languages
Reverse proxies
Envoy
since Oct 2024
Rich text editors
CKEditor
since Aug 2018
RUM
Cloudflare Browser Insights
since Oct 2024
Datadog
since Oct 2024
Security
Tag managers
Google Tag Manager
since Apr 2018
UI frameworks
Video players
Web Frameworks
Ruby on Rails
since Aug 2018
UIKit
since Jun 2018
Web servers
Webmail
Apple iCloud Mail
since Mar 2024
Google Workspace
since Aug 2022
Widgets
Facebook
since Aug 2018
Google Plus
since Jun 2018
Top search keywords
| Keyword | Position | Est. monthly visits |
|---|---|---|
| ounces a gallon | #1 | 111,900 |
| how many grams per oz | #2 | 48,800 |
| 200 degrees c to f | #1 | 45,800 |
| 50cm to inches | #1 | 41,000 |
| 50cm to in | #1 | 41,000 |
| 50cm in inches | #1 | 41,000 |
| 60 inches in ft | #1 | 41,000 |
| 50 cm to inches | #1 | 41,000 |
| 50 cm to in | #1 | 41,000 |
| 50 centimeters to inches | #1 | 41,000 |
| 40 cm to inches | #1 | 41,000 |
| 40 cm to in | #1 | 41,000 |
| 40cm to inches | #1 | 41,000 |
| 40cm in inches | #1 | 41,000 |
| 15cm to inches | #1 | 41,000 |
| 30 centimeters to inches | #1 | 41,000 |
| 30cm to in | #1 | 41,000 |
| us gallon to oz | #3 | 35,800 |
| 72 inch to foot | #1 | 33,400 |
| 72 in to ft | #1 | 33,400 |
| 6 feet to inches | #1 | 33,400 |
| 6 feet into inches | #1 | 33,400 |
| 10cm to in | #1 | 33,400 |
| 10cm inch | #1 | 33,400 |
| 10 cm to in | #1 | 33,400 |
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.
Audience
- 79% phone
- 18% desktop
- 3% tablet
India
Philippines
Peru
Nigeria
Algeria
Venezuela
Countries where the site has Chrome traffic, strongest markets first.
Open Page Rank
7.38 / 10 · ranked #24,874 of all domains
1,242 referring domains · OpenPageRank
Search traffic
18,714,800 est. monthly organic visits (US)
900,299 keywords in Google's top 30
Core Web Vitals
| LCP | 2.5 s |
| INP | 300 ms |
| CLS | 0.05 |
| TTFB | 900 ms |
Real user p75, Chrome UX Report, Jun 2026.
Page
- Language: Spanish
- CDN: Amazon CloudFront
- Weight: 3.2 MB · 75 requests
- Structured data: JSON-LD, Microdata, OpenGraph, Twitter Cards
Homepage as crawled by the HTTP Archive, Jul 2026.
Subdomains
| Host | Techs |
|---|---|
| braingenie.ck12.org | 26 |
| blog.ck12.org | 24 |
| flexbooks.ck12.org | 23 |
| india.ck12.org | 21 |
| odisha.ck12.org | 21 |
| status.ck12.org | 21 |
| rd.ck12.org | 20 |
| www.ck12.org | 20 |
| master.ck12.org | 19 |
| cbse.ck12.org | 17 |
| ck12.org | 17 |
| info.ck12.org | 17 |
| stoodle.ck12.org | 17 |
| help.ck12.org | 16 |
| int-www.ck12.org | 14 |
| interactives.ck12.org | 13 |
| flexmath.ck12.org | 12 |
| simtest.ck12.org | 8 |
Full technology history →
Report an incorrect detection
Recent changes
- detected Mautic Jun 2026
- dropped Dynatrace May 2026
- detected Amazon ALB Apr 2026
- dropped Branch Apr 2026
- detected Dynatrace Mar 2026
- detected TikTok Pixel Feb 2026
- dropped Unpkg Oct 2025
- detected Apple Sign-in Sep 2025
- detected Unpkg Aug 2025