Welyft I A/B Tests identifier

Tracking since Apr 1, 2026.

Changelog

• Apr 1, 2026
  description

  🚀 A/B Test Identifier – Instantly Uncover A/B Tests on Any Website
  
  -Welyft A/B Test identifier is the ultimate Chrome extension for professionals in Conversion Rate Optimization (CRO), User Experience (UX), and web performance analysis. 
  
  -With a single click, detect hidden A/B tests, multivariate experiments, and dynamic personalization on any site you visit.
  
  🔍 Key Features
  
  -Automatic detection of leading testing & personalization platforms:
  Optimizely, AB Tasty, VWO, Kameleoon, Dynamic Yield,  ( and more to come) 
  
  -Reveals active experiments and variations – often includes test or campaign IDs.
  
  -Compatible with e-commerce stores, SaaS platforms, landing pages, and marketing sites.
  
  -Lightweight & privacy-first: no tracking, no data collection.
  
  👥 Who It’s For
  
  -CRO and Growth Marketers – uncover competitor testing strategies
  
  -UX/UI Designers & Web Analysts – enhance audit speed and depth
  
  -Front-End Developers & QA Testers – identify unexpected changes
  
  -Digital Consultants & Curious Explorers – spot optimization tactics on the fly
  
  📈 What You Can Do
  
  -Reveal A/B tests and personalization tactics on live websites
  
  -Identify testing tools used by competitors or clients
  
  -Accelerate UX audits, QA processes, and site evaluations
  
  -Stay inspired by real-world experimentation examples
  
  
  ❓ FAQ – Frequently Asked Questions
  
  How does A/B Test identifier identify experiments?
  
  -We use public front-end APIs exposed by A/B testing and personalization tools to collect experiment metadata. These APIs are typically available in the browser for testing/debugging purposes.
  
  Can the extension collect data from my experiments?
  
  No. A/B Test identifier only detects publicly exposed information, such as:
  
  -The experiment name
  -The type of experiment (e.g., A/B test, personalization)
  
  -It does not collect or expose private data, such as audience segments, performance metrics, targeting rules, or results. The extension operates read-only and does not send any data outside your browser.
  
  What types of tests can it detect?
  
  -A/B tests
  -Split URL tests
  -Multivariate tests
  -Dynamic content personalization
  
  Depending on the tool and setup, it may also detect which variation is being served.
  
  Which testing tools are supported?
  
  -We support a wide range of platforms including:
  -Optimizely, AB Tasty, VWO, Kameleoon, Dynamic Yield, (and more to come) 
  The detection engine is regularly updated to stay current with the ecosystem.
  
  Why am I not seeing any tests?
  
  Several possible reasons:
  
  -Cookie consent not granted – some tests require marketing cookies to activate.
  -Unsupported platform – we may not yet support the tool in use.
  -Server-side test – server-side experiments often don't expose client-side data.
  -No active experiments – the site may not be running any tests at the moment.
  
  Does the extension send any data to Welyft?
  
  -Absolutely not. All detections happen locally in your browser. No data about your browsing or detected experiments is sent to Welyft or any third party.
  
  Changelog: 
  
  1.2 : Fix on Kameleoon & ABTasty API

  🚀 A/B Test Identifier – Instantly Uncover A/B Tests on Any Website
  
  Welyft A/B Test Identifier is the ultimate Chrome extension for professionals in Conversion Rate Optimization (CRO), User Experience (UX), and web performance analysis.
  With a single click, detect hidden A/B tests, multivariate experiments, and dynamic personalization on any site you visit.
  
  🔍 Key Features
  
  • Automatic detection of leading testing & personalization platforms:
    Optimizely, AB Tasty, VWO, Kameleoon, Dynamic Yield (and more to come)
  • Reveals active experiments and variations – includes test names, campaign IDs, and exposure status
  • Server-side experiment detection for Dynamic Yield (Choose API) and AB Tasty Flagship (Decision API)
  • Live monitoring mode – track new experiment exposures in real-time as you browse
  • Exposure notifications – get notified instantly when you're exposed to an A/B test
  • Side panel interface – view experiment details alongside the page without obstruction
  • Compatible with e-commerce stores, SaaS platforms, landing pages, and marketing sites
  • Lightweight & privacy-first: all detection happens locally in your browser
  
  👥 Who It's For
  
  • CRO and Growth Marketers – uncover competitor testing strategies
  • UX/UI Designers & Web Analysts – enhance audit speed and depth
  • Front-End Developers & QA Testers – identify unexpected changes
  • Digital Consultants & Curious Explorers – spot optimization tactics on the fly
  
  📈 What You Can Do
  
  • Reveal A/B tests and personalization tactics on live websites
  • Identify testing tools used by competitors or clients
  • See which variation you're exposed to and monitor changes in real-time
  • Clear A/B testing cookies to reset your variation assignment
  • Accelerate UX audits, QA processes, and site evaluations
  • Stay inspired by real-world experimentation examples
  
  🔒 Privacy
  
  All detections happen locally in your browser. A/B Test Identifier does not collect personal data.
  On first use, you may opt in to share anonymous, aggregated scan data (test name and domain only) to help build global A/B testing adoption statistics. This is entirely optional and can be changed at any time in the extension settings. More information in our privacy policy: https://www.welyft.com/en/politique-de-confidentialite
  
  ❓ FAQ – Frequently Asked Questions
  
  How does A/B Test Identifier detect experiments?
  We use public front-end APIs exposed by A/B testing and personalization tools to collect experiment metadata. These APIs are typically available in the browser for testing and debugging purposes.
  
  Can the extension access my experiment data?
  No. A/B Test Identifier only detects publicly exposed information, such as:
  • The experiment name
  • The type of experiment (e.g., A/B test, personalization)
  • The variation you are assigned to
  It does not collect or expose private data such as audience segments, performance metrics, targeting rules, or results. The extension operates read-only.
  
  What types of tests can it detect?
  • A/B tests
  • A/A tests
  • Split URL tests
  • Multivariate tests
  • Dynamic content personalization
  • Server-side experiments (Dynamic Yield, AB Tasty Flagship)
  Depending on the tool and setup, it also detects which variation is being served and whether you are exposed.
  
  Which testing tools are supported?
  We support a wide range of platforms including:
  Optimizely, AB Tasty, VWO, Kameleoon, Dynamic Yield (and more to come)
  The detection engine is regularly updated to stay current with the ecosystem.
  
  Why am I not seeing any tests?
  Several possible reasons:
  • Cookie consent not granted – some tests require marketing cookies to activate
  • Unsupported platform – we may not yet support the tool in use
  • Server-side test – some server-side experiments don't expose client-side data
  • No active experiments – the site may not be running any tests at the moment
  • Async loading – try reloading the page; some tools load after initial page render
  
  Does the extension send any data?
  By default, no data is sent. If you opt in during first use, only the test name and website domain are shared anonymously for aggregated statistics. No personal data, browsing history, or cookies are ever transmitted. You can opt out at any time.
  
  📋 Changelog
  1.2: Fix on Kameleoon & AB Tasty API
  2.0: New UI with side panel, server-side detection (Dynamic Yield Choose API, AB Tasty Flagship Decision API), live monitoring mode, exposure notifications, A/B testing cookie management, anonymous statistics opt-in, improved async tool detection

• Apr 1, 2026
  host_permissions

  (empty)

  <all_urls>

• Apr 1, 2026
  permissions

  activeTab, storage, scripting

  activeTab, storage, scripting, sidePanel, tabs, notifications, cookies

Permissions & access

Permissions

activeTabstoragescriptingsidePaneltabsnotificationscookies

Host access

<all_urls>

Screenshots

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