190 Countries, Zero API Calls: Shipping Static Data in a Chrome Extension

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Learn how to ship static data in a Chrome extension without making API calls, useful for optimizing performance and reducing dependencies

intermediate Published 23 May 2026
Action Steps
  1. Build a data matrix for 190 countries using a spreadsheet or data processing tool
  2. Convert the data matrix into a JSON file for easy consumption by the Chrome extension
  3. Bundle the JSON file with the Chrome extension's codebase using a build tool like Webpack or Rollup
  4. Configure the Chrome extension to load the static data from the bundled JSON file at runtime
  5. Test the Chrome extension to ensure the static data is loaded correctly and functions as expected
Who Needs to Know This

This technique benefits frontend developers and Chrome extension creators who need to manage large datasets without relying on external APIs, improving their extension's overall performance and user experience

Key Insight

💡 Bundling static data with your Chrome extension can improve performance and reduce reliance on external APIs

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Ship static data in your Chrome extension without API calls! Learn how to optimize performance and reduce dependencies

Key Takeaways

Learn how to ship static data in a Chrome extension without making API calls, useful for optimizing performance and reducing dependencies

Full Article

How I structured and bundled a 190-country visa requirements matrix into a Chrome extension without hitting any external API at runtime.
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