What powers ef.com?
Last seen Jun 2026 · 166 technologies across 45 categories
A/B Testing
Google Optimize
since Jul 2021
Optimizely
since Jul 2023
Advertising
Microsoft Advertising
since Feb 2021
Reddit Ads
since May 2023
Snap Pixel
since Jul 2021
Twitter Ads
since May 2024
Analytics
Adobe Analytics
since Jun 2018
Amplitude
since Apr 2021
Branch
since Feb 2023
Cloudflare Browser Insights
since Feb 2021
Google Ads Conversion Tracking
since Jul 2021
Google Analytics
since Jun 2018
Hotjar
since Aug 2018
Leadinfo
since Jul 2021
Linkedin Insight Tag
since Feb 2021
Microsoft Clarity
since Dec 2021
Oracle Infinity
since May 2026
TikTok Pixel
since Jul 2021
Authentication
Azure AD B2C
since Feb 2022
Blogs
WordPress
since Aug 2018
Caching
CDN
Amazon CloudFront
since Aug 2018
Amazon S3
since Jul 2019
cdnjs
since Nov 2021
Cloudflare
since Aug 2018
Google Hosted Libraries
since Feb 2022
jQuery CDN
since Feb 2022
jsDelivr
since Jul 2021
KeyCDN
since Jun 2018
Unpkg
since Jul 2021
CMS
Storyblok
since Jul 2023
Cookie compliance
OneTrust
since Jul 2023
CRM
Customer data platform
Databases
MySQL
since Aug 2018
Development
Microsoft Visual Studio
since Feb 2023
Ecommerce
Cart Functionality
since Apr 2022
Font scripts
Font Awesome
since Aug 2018
Google Font API
since Apr 2019
Hosting
Bluehost
since Aug 2022
Hosting panels
Tencent Waterproof Wall
since Nov 2022
Issue trackers
JavaScript Frameworks
JavaScript graphics
Chart.js
since May 2022
JavaScript libraries
Axios
since May 2024
Closure Library
since Nov 2023
FancyBox
since Aug 2022
Howler.js
since Jan 2022
jPlayer
since Feb 2024
Keen-Slider
since Dec 2024
Marked
since May 2024
MobX
since Mar 2020
Preact
since Oct 2021
Select2
since May 2024
Slick
since Sep 2021
Underscore.js
since May 2024
web-vitals
since Feb 2022
Live chat
Load balancers
Maps
Google Maps
since Jan 2019
Marketing automation
Pardot
since Aug 2022
Salesforce Marketing Cloud Account Engagement
since Dec 2022
Salesloft
since Dec 2024
Sendinblue
since Jan 2023
Miscellaneous
Babel
since Feb 2020
HTTP/3
since Sep 2022
LottieFiles
since Feb 2022
Open Graph
since Sep 2022
PWA
since Aug 2022
Twitter Emoji (Twemoji)
since Aug 2018
Webpack
since Jan 2019
Mobile frameworks
jQuery-pjax
since May 2024
Operating systems
Windows Server
since Aug 2018
PaaS
Page builders
Performance
Cloudflare Rocket Loader
since Dec 2022
Priority Hints
since Sep 2025
Programming languages
Retargeting
Google Remarketing Tag
since Jul 2021
RUM
Datadog
since Jul 2021
Google Core Web Vitals
since Sep 2021
Security
Cloudflare Bot Management
since Feb 2022
Detectify
since Jul 2023
HSTS
since Sep 2022
reCAPTCHA
since Jan 2021
SEO
Social logins
Facebook Login
since Jul 2021
Tag managers
Google Tag Manager
since Apr 2018
Translation
Weglot
since Dec 2021
UI frameworks
Aura
since Oct 2022
Bootstrap
since Aug 2018
Bulma
since Sep 2021
Headless UI
since Dec 2022
Material Design Lite
since May 2022
MUI
since Apr 2022
Pure CSS
since Aug 2022
Radix UI
since Mar 2024
Tailwind CSS
since Apr 2022
TDesign
since Sep 2025
Video players
Web frameworks
Web Servers
Apache HTTP Server
since Aug 2018
OpenResty
since Jan 2019
Webmail
Widgets
Top search keywords
| Keyword | Position | Est. monthly visits |
|---|---|---|
| fourth of july | #40 | 5,800 |
| football in us | #18 | 2,700 |
| america and united states | #61 | 2,100 |
| football united states | #51 | 1,700 |
| mayday day | #6 | 1,700 |
| statue of liberty statue of liberty | #56 | 1,400 |
| english | #17 | 1,300 |
| america | #66 | 1,200 |
| brooklyn bridge | #25 | 1,100 |
| adjectively | #45 | 770 |
| grand central terminal new york | #14 | 760 |
| inspirational quotes quotes | #51 | 710 |
| nationality | #10 | 680 |
| how to relax | #59 | 630 |
| english grammar | #62 | 630 |
| english and grammar | #94 | 630 |
| english and grammar | #64 | 630 |
| july of fourth | #17 | 580 |
| hyphen | #15 | 560 |
| english in bangladesh | #15 | 560 |
| vocabulario en ingles | #1 | 550 |
| germanisms | #4 | 530 |
| german sayings | #1 | 490 |
| eng to ru | #81 | 470 |
| difficult words to pronounce | #3 | 430 |
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
- 53% desktop
- 44% phone
- 3% tablet
Chile
Rwanda
India
Germany
Brazil
France
Countries where the site has Chrome traffic, strongest markets first.
Open Page Rank
7.67 / 10 · ranked #13,999 of all domains
2,853 referring domains · OpenPageRank
Search traffic
80,400 est. monthly organic visits (US)
50,979 keywords in Google's top 30
Core Web Vitals
| LCP | 6 s |
| INP | 525 ms |
| CLS | 0.45 |
| TTFB | 2600 ms |
Real user p75, Chrome UX Report, Jun 2026.
Page
- Language: English
- Weight: 4.7 MB · 62 requests
- Structured data: OpenGraph, Twitter Cards
Homepage as crawled by the HTTP Archive, Jul 2026.
Subdomains
| Host | Techs |
|---|---|
| hostwith.ef.com | 35 |
| class.ef.com | 27 |
| tw.hello.ef.com | 27 |
| zh.hello.ef.com | 27 |
| accounts.ef.com | 26 |
| teacherblog.ef.com | 26 |
| www.ef.com | 26 |
| we-are-ef.ef.com | 24 |
| school.englishlive.ef.com | 23 |
| corporatelearning.ef.com | 22 |
| englishlive.ef.com | 22 |
| careers.ef.com | 21 |
| app.hello.ef.com | 20 |
| hello.ef.com | 20 |
| www.hello.ef.com | 20 |
| world-languages-corporate.ef.com | 19 |
| campusconnect.ef.com | 18 |
| my.ef.com | 18 |
| checkout.englishlive.ef.com | 17 |
| impact.ef.com | 17 |
| jobs.ef.com | 17 |
| 789win.efte.athena.ef.com | 16 |
| assessment.kids.ef.com | 16 |
| qa-careers.ef.com | 16 |
Full technology history →
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Recent changes
- dropped Vimeo Mar 2026
- dropped Leadfeeder Dec 2025
- detected YouTube Nov 2025