GrowthBook DevTools

About

Features
- Visually create and edit experiments – Use the GrowthBook Visual Editor to design A/B tests without touching code.
- See feature flags and experiments in real time – Instantly view all active flags and experiments on any page.
- Test variations on the fly – Override feature flag values and experiment variations to explore different scenarios.
- Understand what’s happening – Get detailed debug logs explaining how flags and experiments are evaluated.
- Simulate user experiences – Override attributes to see how different users interact with your features.
- Use Archetypes for quick testing – Apply predefined user profiles for realistic testing.
- Debug back-end SDKs – Override and observe front-end, back-end, and hybrid environments.

Learn more in our docs (https://docs.growthbook.io/tools/chrome-extension)

Requirements
- Install the GrowthBook Javascript, React, or HTML Script Tag SDK to your site (https://docs.growthbook.io/lib)

GrowthBook is the open-source A/B testing and feature flagging platform. - https://www.growthbook.io


Recent Changes

*1.2.4* (2026-03-05)
- Visual editor bug fixes (CSP issues, invalid CSS selectors)
- Support holdouts
- Support OR conditions and new operator types
- Bump SDK support to 1.6.5

*1.2.3* (2025-08-06)
- Bug fixes (experiment tab crashes, experiment rule details not always rendering)

*1.2.2* (2025-04-30)
- Support for safe rollouts
- Align back-end interfaces with JS SDK ^1.5.0

*1.2.1* (2025-04-16)
- Support for backend SDK debugging (overrides, logs)
- Feature and Experiment views now show both simulated and live evaluations when available
- UI updates
- Bug fixes

*1.1.2* (2025-03-25)
- Persist feature and experiment search filter
- Bug fix: Improve association of debug logs to feature rules

*1.1.1* (2025-03-17)
- Choose between live, draft, and inactive revisions of features using the GrowthBook API
- Quickly apply feature overrides from feature rules
- Show feature descriptions and other meta information from the API

*1.1.0* (2025-03-11)
- Share DevTools session by link
- Import/export DevTools session by JSON blob
- Preview draft features & experiments not in SDK payload
- Bug fixes (occasional attributes tab crashes, mislabeled experiment overrides, theme flickering)

*1.0.4* (2025-03-05)
- Ability to clear individual attribute overrides
- Bug fixes (legacy SDK support, prevent attribute caching, fix search)

*1.0.3* (2025-03-03)
- Allow inspecting & overriding features not in the SDK payload (stale or unpublished features)
- Allow overriding feature value types
- Bug fixes (special chars in feature keys, legacy SDK support, type safety)
- Warn when using outdated SDK version

*1.0.2* (2025-02-27)
- Bug fixes (persist overrides between page loads, better handling of missing API keys)

*1.0.1* (2025-02-21)
- Dark mode
- Log tracking calls in debug logger
- Bug fixes and legacy SDK support

*1.0.0* (2025-02-21)
- Brand new DevTools application
- Runs docked or in popup mode (click the extension icon)
- Does not affect Visual Editor