Daniel Osei is Editor-in-Chief at BrowserSource, where he leads coverage of browser extension development, extension security, and the Chromium and Firefox platform ecosystems.
Daniel has been building browser extensions for over a decade, with published extensions in both the Chrome Web Store and Firefox Add-ons. His technical background spans the full extension development stack — from manifest permissions and content scripts to background service workers and the cross-browser compatibility challenges introduced by Manifest V3. He has written and spoken about the tradeoffs between extension capability and user privacy, and follows browser extension policy changes at Google, Mozilla, and Microsoft closely.
At BrowserSource, Daniel focuses on extension reviews that go beyond basic functionality to examine the permissions model, update history, and developer transparency behind each tool. He also publishes guides on building extensions for developers new to the browser platform.