β οΈRequests 1 sensitive permission β
Recently updated
Description
π A/B Test Identifier β 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.
π Key Features
β’ Automatic detection of leading testing & personalization platforms:
Optimizely, AB Tasty, VWO, Kameleoon, Dynamic Yield (and more to come)
β’ Reveals active experiments and variations β includes test names, campaign IDs, and exposure status
β’ Server-side experiment detection for Dynamic Yield (Choose API) and AB Tasty Flagship (Decision API)
β’ Live monitoring mode β track new experiment exposures in real-time as you browse
β’ Exposure notifications β get notified instantly when you're exposed to an A/B test
β’ Side panel interface β view experiment details alongside the page without obstruction
β’ Compatible with e-commerce stores, SaaS platforms, landing pages, and marketing sites
β’ Lightweight & privacy-first: all detection happens locally in your browser
π₯ Who It's For
β’ CRO and Growth Marketers β uncover competitor testing strategies
β’ UX/UI Designers & Web Analysts β enhance audit speed and depth
β’ Front-End Developers & QA Testers β identify unexpected changes
β’ Digital Consultants & Curious Explorers β spot optimization tactics on the fly
π What You Can Do
β’ Reveal A/B tests and personalization tactics on live websites
β’ Identify testing tools used by competitors or clients
β’ See which variation you're exposed to and monitor changes in real-time
β’ Clear A/B testing cookies to reset your variation assignment
β’ Accelerate UX audits, QA processes, and site evaluations
β’ Stay inspired by real-world experimentation examples
π 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
β FAQ β 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:
β’ The experiment name
β’ The type of experiment (e.g., A/B test, personalization)
β’ 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?
β’ A/B tests
β’ A/A tests
β’ Split URL tests
β’ Multivariate tests
β’ Dynamic content personalization
β’ 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:
β’ Cookie consent not granted β some tests require marketing cookies to activate
β’ Unsupported platform β we may not yet support the tool in use
β’ Server-side test β some server-side experiments don't expose client-side data
β’ No active experiments β the site may not be running any tests at the moment
β’ Async loading β 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.
π 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
Reviews
Loading reviews...
Permissions (7)
Permissions
activeTabβΉ Can access the current tab when you click the extension cookiesβΉ Can read and modify browser cookies notificationsβΉ Can show desktop notifications scriptingβΉ Can inject scripts into web pages sidePanel storageβΉ Can store data locally in your browser tabsβΉ Can see your open tabs and their URLs
Details
| Version | 2.0 |
| Updated | Mar 24, 2026 |
| Size | 363KiB |
| First Seen | Mar 27, 2026 |
Popular in tools
Zotero Connector
by Zotero
8M
β
3.96
tools
8M
β
3.96
tools
Browsec VPN - Free VPN for Chrome
by Browsec
7M
β
4.44
tools
7M
β
4.44
tools
AnyDoc Translator - Translate Web and PDF
by www.wps.com
7M
β
4.58
tools
7M
β
4.58
tools
WPS PDF - Read, Edit, Fill, Convert, and AI Chat PDF with Ease
by www.wps.com
7M
β
4.45
tools
7M
β
4.45
tools
Video DownloadHelper
by Aclap
5M
β
4.43
tools
5M
β
4.43
tools
Popular Extensions
Adobe Acrobat: PDF edit, convert, sign tools
by Adobe Inc.
331M
β
4.40
workflow
331M
β
4.40
workflow
AdBlock β block ads across the web
by AdBlock
62M
β
4.48
workflow
62M
β
4.48
workflow
θΏ
ι·δΈθ½½ζ―ζ
by Shenzhen Xunlei Network Technology Co., Ltd.
59M
β
2.77
workflow
59M
β
2.77
workflow
Grammarly: AI Writing Assistant and Grammar Checker App
by Grammarly
42M
β
4.50
communication
42M
β
4.50
communication
Adblock Plus - free ad blocker
by eyeo GmbH
41M
β
4.39
workflow
41M
β
4.39
workflow