Technology history for harpercollins.com
Stack size over time
From 3 detected technologies in Apr 2018 to 110 in Jun 2026.
Currently detected
- Sizmek since Apr 2018
- Cloudflare since Apr 2018
- Google Tag Manager since Apr 2018
- MySQL since Jun 2018
- New Relic since Jun 2018
- Slick since Jun 2018
- WordPress since Jun 2018
- Handlebars since Jun 2018
- Font Awesome since Jun 2018
- Google Analytics since Jun 2018
- Lodash since Jun 2018
- jQuery UI since Jun 2018
- Google Analytics Enhanced eCommerce since Jun 2018
- jQuery since Jun 2018
- Facebook since Jun 2018
- PHP since Jun 2018
- Quantcast Measure since Jun 2018
- Twitter Emoji (Twemoji) since Aug 2018
- Yoast SEO since Aug 2018
- Apache HTTP Server since Aug 2018
- Bootstrap since Aug 2018
- jQuery Migrate since Aug 2018
- FancyBox since Aug 2018
- MediaElement.js since Aug 2018
- Nginx since Aug 2018
- Crazy Egg since Jan 2019
- Ensighten since Jan 2019
- Moment.js since Mar 2020
- Kinsta since Mar 2020
- AddThis since Mar 2020
- Google Font API since Mar 2020
- Sucuri since May 2020
- Shopify since Jul 2020
- Swiper Slider since Jul 2020
- jsDelivr since Jul 2020
- Polyfill since Jul 2020
- Vue.js since Jul 2020
- Webpack since Aug 2020
- Cart Functionality since Aug 2020
- Quantcast Choice since Aug 2020
- Popper since Feb 2021
- Moat since Feb 2021
- Sailthru since May 2021
- ExitIntel since May 2021
- LiveIntent since Jun 2021
- Cloudflare Browser Insights since Jun 2021
- Pinterest Conversion Tag since Jul 2021
- Algolia since Jul 2021
- Axios since Jul 2021
- Boomerang since Jul 2021
- Facebook Pixel since Jul 2021
- Google Ads Conversion Tracking since Jul 2021
- Google Optimize since Jul 2021
- React since Jul 2021
- core-js since Aug 2021
- Shogun since Sep 2021
- Wheelio since Sep 2021
- Optimizely since Sep 2021
- TikTok Pixel since Oct 2021
- Cloudflare Bot Management since Oct 2021
- cdnjs since Nov 2021
- PayPal since Nov 2021
- Venmo since Nov 2021
- OWL Carousel since Dec 2021
- YUI since Dec 2021
- AlloyUI since Dec 2021
- Amazon ALB since Dec 2021
- Amazon Web Services since Dec 2021
- Java since Dec 2021
- Liferay since Dec 2021
- Osano since Dec 2021
- reCAPTCHA since Dec 2021
- AOS since Mar 2022
- LazySizes since Mar 2022
- theTradeDesk since Jun 2022
- Node.js since Aug 2022
- PWA since Aug 2022
- styled-components since Aug 2022
- Amplience since Aug 2022
- Bugcrowd since Aug 2022
- Dropbox since Aug 2022
- Netlify since Aug 2022
- Next.js since Aug 2022
- Swiper since Sep 2022
- HSTS since Sep 2022
- Open Graph since Sep 2022
- Shogun Landing Page Builder since Jan 2023
- Shogun Page Builder since Jan 2023
- Priority Hints since Feb 2023
- Google Hosted Libraries since Apr 2023
- OneTrust since May 2023
- Auth0 since May 2023
- Auth0 Lock since May 2023
- DocuSign since Jan 2024
- Amazon CloudFront since Mar 2024
- VWO since Nov 2024
- Shop Pay since Dec 2024
- Apple Pay since Dec 2024
- HTTP/3 since Jan 2025
- Microsoft Advertising since Feb 2025
- Twenty Nineteen since Apr 2025
- WordPress Block Editor since Apr 2025
- RSS since Apr 2025
- Site Kit since Aug 2025
- WordPress Multisite since Aug 2025
- Spectra since Aug 2025
- Astra since Aug 2025
- Reddit Ads since Nov 2025
- Attentive since Apr 2026
- Mautic since Jun 2026
Previously used
- Envoy Apr 2024 to Apr 2024 · 1 mo
- Choices Dec 2021 to Nov 2022 · 11 mo
- Cloudflare Network Error Logging Aug 2022 to Oct 2022 · 2 mo
- ShareThis Feb 2022 to Oct 2022 · 8 mo
- jQuery CDN Feb 2022 to Aug 2022 · 6 mo
- Tawk.to Dec 2021 to Aug 2022 · 8 mo
- Instafeed May 2022 to May 2022 · 1 mo
- Amazon Associates Apr 2022 to Apr 2022 · 1 mo
- Easy Redirects Apr 2022 to Apr 2022 · 1 mo
- Tailwind CSS Apr 2022 to Apr 2022 · 1 mo
- Google Remarketing Tag Dec 2021 to Jan 2022 · 1 mo
- BugSnag Jul 2020 to Jun 2021 · 11 mo
- Babel Apr 2020 to Jan 2021 · 9 mo
- Hammer.js May 2020 to Jan 2021 · 8 mo
- IIS May 2020 to Jun 2020 · 1 mo
- Microsoft ASP.NET May 2020 to Jun 2020 · 1 mo
- Windows Server May 2020 to Jun 2020 · 1 mo
- WP Engine May 2019 to Jul 2019 · 2 mo
- Underscore.js Jun 2018 to Jun 2018 · 1 mo
Timeline
2026 2 added
2025 3 added · 1 dropped
- added Reddit Ads Nov 2025 · Advertising
- added Osano Jun 2025 · Cookie compliance
- added Microsoft Advertising Feb 2025 · Advertising
- dropped New Relic Jan 2025 · RUM
2024 5 added · 2 dropped
- added Apple Pay Dec 2024 · Payment processors
- added Shop Pay Dec 2024 · Payment processors
- added VWO Nov 2024 · Analytics
- dropped Envoy Jun 2024 · Reverse proxies
- added Envoy Apr 2024 · Reverse proxies
- dropped Osano Mar 2024 · Cookie compliance
- added DocuSign Jan 2024 · Miscellaneous
2023 6 added · 2 dropped
- added Google Hosted Libraries Jul 2023 · CDN
- dropped Google Hosted Libraries Jun 2023 · CDN
- added OneTrust May 2023 · Cookie compliance
- added Google Hosted Libraries Apr 2023 · CDN
- dropped Choices Feb 2023 · JavaScript libraries
- added Priority Hints Feb 2023 · Performance
- added Shogun Landing Page Builder Jan 2023 · Shopify apps
- added Shogun Page Builder Jan 2023 · Page builders
2022 29 added · 10 dropped · 2 switched
- dropped Cloudflare Network Error Logging Dec 2022 · Issue trackers
- dropped ShareThis Dec 2022 · Widgets
- dropped jQuery CDN Nov 2022 · CDN
- dropped Tawk.to Nov 2022 · Live chat
- added HSTS Sep 2022 · Security
- added Open Graph Sep 2022 · Miscellaneous
- added Swiper Sep 2022 · JavaScript libraries
- added AlloyUI Aug 2022 · JavaScript frameworks
- added Amazon ALB Aug 2022 · Load balancers
- added Amazon Web Services Aug 2022 · PaaS
- added Bugcrowd Aug 2022 · Security
- added cdnjs Aug 2022 · CDN
- added Choices Aug 2022 · JavaScript libraries
- added Cloudflare Network Error Logging Aug 2022 · Issue trackers
- added Dropbox Aug 2022 · Digital asset management
- dropped IIS Aug 2022 · Web servers
- added Java Aug 2022 · Programming languages
- added jQuery CDN Aug 2022 · CDN
- added Liferay Aug 2022 · CMS
- added Lodash Aug 2022 · JavaScript libraries
- dropped Microsoft ASP.NET Aug 2022 · Web frameworks
- added Osano Aug 2022 · Cookie compliance
- added OWL Carousel Aug 2022 · JavaScript libraries
- added reCAPTCHA Aug 2022 · Security
- added ShareThis Aug 2022 · Widgets
- added Sucuri Aug 2022 · CDN
- added Tawk.to Aug 2022 · Live chat
- added theTradeDesk Aug 2022 · Advertising
- added TikTok Pixel Aug 2022 · Analytics
- dropped Windows Server Aug 2022 · Operating systems
- added YUI Aug 2022 · JavaScript libraries
- dropped Google Remarketing Tag Jul 2022 · Retargeting
- dropped Amazon Associates Jun 2022 · Affiliate programs
- dropped Tailwind CSS Jun 2022 · UI frameworks
- added theTradeDesk Jun 2022 · Advertising
- switched Easy Redirects Instafeed May 2022 · Shopify apps
- added Amazon Associates Apr 2022 · Affiliate programs
- switched Instafeed Easy Redirects Apr 2022 · Shopify apps
- added Tailwind CSS Apr 2022 · UI frameworks
- added jQuery CDN Feb 2022 · CDN
- added ShareThis Feb 2022 · Widgets
2021 24 added · 5 dropped · 1 switched
- added Tawk.to Dec 2021 · Live chat
- added cdnjs Nov 2021 · CDN
- added PayPal Nov 2021 · Payment processors
- added Venmo Nov 2021 · Payment processors
- dropped React Oct 2021 · JavaScript libraries
- added TikTok Pixel Oct 2021 · Analytics
- added Optimizely Sep 2021 · A/B Testing
- added Shogun Sep 2021 · Page builders
- added Wheelio Sep 2021 · Widgets
- dropped BugSnag Aug 2021 · Analytics
- added core-js Aug 2021 · JavaScript libraries
- added Algolia Jul 2021 · Search engines
- added Axios Jul 2021 · JavaScript libraries
- added Boomerang Jul 2021 · RUM
- added Facebook Pixel Jul 2021 · Analytics
- added Google Ads Conversion Tracking Jul 2021 · Analytics
- added Google Optimize Jul 2021 · A/B Testing
- added Moment.js Jul 2021 · JavaScript libraries
- added Pinterest Conversion Tag Jul 2021 · Analytics
- added React Jul 2021 · JavaScript libraries
- added BugSnag Jun 2021 · Analytics
- added Cloudflare Browser Insights Jun 2021 · Analytics
- added LiveIntent Jun 2021 · Advertising
- dropped BugSnag May 2021 · Analytics
- added ExitIntel May 2021 · Marketing automation
- dropped Hammer.js May 2021 · JavaScript libraries
- added Sailthru May 2021 · Email
- dropped Moment.js Mar 2021 · JavaScript libraries
- added Moat Feb 2021 · Analytics
- switched Babel Popper Feb 2021 · Miscellaneous
2020 13 added · 3 dropped
- added BugSnag Dec 2020 · Analytics
- dropped Babel Sep 2020 · Miscellaneous
- dropped BugSnag Sep 2020 · Analytics
- dropped Hammer.js Sep 2020 · JavaScript libraries
- added Cart Functionality Aug 2020 · Ecommerce
- added Quantcast Choice Aug 2020 · Cookie compliance
- added Webpack Aug 2020 · Miscellaneous
- added BugSnag Jul 2020 · Analytics
- added jsDelivr Jul 2020 · CDN
- added Polyfill Jul 2020 · JavaScript libraries
- added Shopify Jul 2020 · Ecommerce
- added Swiper Slider Jul 2020 · Miscellaneous
- added Vue.js Jul 2020 · JavaScript frameworks
- added Hammer.js May 2020 · JavaScript libraries
- added Babel Apr 2020 · Miscellaneous
- added Kinsta Mar 2020 · PaaS
2019 9 added · 1 dropped
- dropped WP Engine Sep 2019 · PaaS
- added WP Engine May 2019 · PaaS
- added Crazy Egg Mar 2019 · Analytics
- added Ensighten Mar 2019 · Tag Managers
- added FancyBox Mar 2019 · JavaScript Libraries
- added MediaElement.js Mar 2019 · Video Players
- added Nginx Mar 2019 · Web Servers
- added Yoast SEO Mar 2019 · SEO
- added Crazy Egg Jan 2019 · Analytics
- added Ensighten Jan 2019 · Tag Managers
2018 3 dropped
- dropped New Relic Nov 2018 · Analytics
- dropped Lodash Aug 2018 · JavaScript Frameworks
- dropped Underscore.js Aug 2018 · JavaScript Frameworks