mozilla/gecko-dev
Jun 2025 – Jul 2025
2 Months active
Languages Used
C++IDLJavaJavaScriptKotlin
Technical Skills
Android DevelopmentBrowser DevelopmentBrowser Extension DevelopmentBrowser ExtensionsC++ DevelopmentCSS
Emma Zuehlcke
PROFILE
Emma Zuehlcke
During their work on mozilla/gecko-dev, Emz developed and maintained privacy-focused features for Firefox, aligning mobile privacy controls with the desktop experience. They engineered enhancements such as Bounce Tracking Protection in strict Enhanced Tracking Protection mode for Fenix, using C++ and JavaScript to strengthen default privacy. Emz extended the URL classifier’s allow-list categories, enabling finer site compatibility management and user opt-in via the preferences UI. Their contributions included SmartBlock improvements for embedded content and comprehensive migration logic across anti-tracking components, supported by robust testing. Emz’s work demonstrated depth in browser internals, privacy engineering, and cross-component configuration management within a complex codebase.
Overall Statistics
Feature vs Bugs
80%Features
Repository Contributions
12Total
Bugs
1
Commits
12
Features
4
Lines of code
2,166
Activity Months2
Your Network
852 people
Work History
July 2025
5 Commits • 1 Features
Jul 1, 2025Monthly summary for 2025-07: Delivered a cross-component migration enabling ETP strict/custom URL classifier allow-list category handling with opt-in/out via the preferences UI. Implemented migration logic across the URL classifier and anti-tracking components, added startup ignorePrefs.json handling, and built comprehensive tests to validate migration across components.
5 Commits • 1 Features
Jul 1, 2025Monthly summary for 2025-07: Delivered a cross-component migration enabling ETP strict/custom URL classifier allow-list category handling with opt-in/out via the preferences UI. Implemented migration logic across the URL classifier and anti-tracking components, added startup ignorePrefs.json handling, and built comprehensive tests to validate migration across components.
July 2025
June 2025
7 Commits • 3 Features
Jun 1, 2025June 2025 — Privacy-preserving feature delivery and maintenance cleanups across mozilla/gecko-dev. Focused on aligning mobile privacy controls with Firefox Desktop, improving UX for embedded content, and reducing technical debt. Delivered new privacy features, UX improvements for embeds, and extended allow-list capabilities to improve site compatibility, while cleaning up obsolete shims. Key outcomes: - BTP in ETP strict mode for Fenix to align with Firefox Desktop and enhance privacy by default. - SmartBlock: Disqus embeds support and responsive placeholders improving UX on small screens. - UrlClassifierExceptionList extended with allow-list categories (baseline and convenience) for finer site compatibility. - Maintenance cleanup: Removed obsolete Blogger shims in webcompat extension to simplify maintenance and reduce surface area for regressions.
June 2025
7 Commits • 3 Features
Jun 1, 2025June 2025 — Privacy-preserving feature delivery and maintenance cleanups across mozilla/gecko-dev. Focused on aligning mobile privacy controls with Firefox Desktop, improving UX for embedded content, and reducing technical debt. Delivered new privacy features, UX improvements for embeds, and extended allow-list capabilities to improve site compatibility, while cleaning up obsolete shims. Key outcomes: - BTP in ETP strict mode for Fenix to align with Firefox Desktop and enhance privacy by default. - SmartBlock: Disqus embeds support and responsive placeholders improving UX on small screens. - UrlClassifierExceptionList extended with allow-list categories (baseline and convenience) for finer site compatibility. - Maintenance cleanup: Removed obsolete Blogger shims in webcompat extension to simplify maintenance and reduce surface area for regressions.
Activity
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Quality Metrics
Correctness94.2%
Maintainability93.2%
Architecture93.2%
Performance86.6%
AI Usage20.0%
Skills & Technologies
Programming Languages
C++IDLJavaJavaScriptKotlin
Technical Skills
Android DevelopmentBrowser DevelopmentBrowser Extension DevelopmentBrowser ExtensionsC++ DevelopmentCSSConfiguration ManagementFront-end DevelopmentJavaScriptJavaScript DevelopmentMobile DevelopmentMozilla InternalsPrivacy EngineeringPrivacy FeaturesTesting
Repositories Contributed To
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