
GrowthBook DevTools by GrowthBook
GrowthBook DevTools helps you debug feature flags and experiments and design A/B tests visually — all from your browser.
You'll need Firefox to use this extension
Extension Metadata
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About this extension
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.
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
- 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.
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
Developer comments
We're open source! Contribute to this extension at https://github.com/growthbook/devtools
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This add-on needs to:
- Extend developer tools to access your data in open tabs
- Access your data for all websites
This add-on may also ask to:
- Access your data for all websites
More information
- Add-on Links
- Version
- 1.0.3
- Size
- 875 KB
- Last updated
- 22 days ago (Mar 4, 2025)
- Related Categories
- License
- MIT License
- Version History
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Release notes for 1.0.3
- Allow inspecting & overriding features not in the SDK payload (stale or unpublished features)
- Allow overriding feature value types
- Warn when using outdated SDK version
- Bug fixes (special chars in feature keys, legacy SDK support, type safety)
- Bug fixes (persist overrides between page loads, better handling of missing API keys)
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