Building a Timezone Converter Chrome Extension: Convert Time Case Study

📰 Dev.to · TikitaTech

Learn how to build a Chrome extension that converts timezones on hover, handling over 400 timezones

intermediate Published 26 Apr 2026
Action Steps
  1. Build a basic Chrome extension using HTML, CSS, and JavaScript
  2. Use the Internationalization API to handle timezone conversions
  3. Implement a hover effect to display the converted time
  4. Test the extension with different timezones and edge cases
  5. Configure the extension to handle user preferences and settings
Who Needs to Know This

Frontend developers and browser extension developers can benefit from this tutorial to create a useful tool for users who work with different timezones. The team can use this knowledge to build other productivity-focused extensions.

Key Insight

💡 Using the Internationalization API simplifies handling multiple timezones in a Chrome extension

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🕒️ Build a Chrome extension that converts timezones on hover! 🌎️

Key Takeaways

Learn how to build a Chrome extension that converts timezones on hover, handling over 400 timezones

Full Article

There are over 400 timezones. I built a Chrome extension that handles all of them on hover. Here's...
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