# Introduction

- [Chrome Themes Overview](/introduction/chrome-themes-overview.md): A theme is a special kind of extension that changes the way the browser looks. Themes are packaged like regular extensions, but they don't contain JavaScript or HTML code.
- [Manifest.json v3](/introduction/manifest.json-v3.md)
- [Deploying and Testing Chrome Themes](/introduction/deploying-and-testing-chrome-themes.md)
- [API REFERENCE](/introduction/api-reference.md)