Emotion screenshot

Emotion

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Updated: 4 Nov 2025
17969 Stars

CSS-in-JS library designed for high performance style composition

Overview

Emotion is an innovative CSS-in-JS library that stands out for its high performance and flexibility in style composition. This library allows developers to write CSS rules in JavaScript, providing a seamless integration of styles with components. With its ability to manage dynamic styling based on component states, Emotion presents a powerful tool for creating modern and responsive user interfaces.

The convenience of Emotion extends to its lightweight and efficient design, making it a favorite among developers who prioritize performance without compromising on the aesthetics and customization of their applications. Whether building large-scale applications or simple projects, Emotion offers a robust solution for styling needs.

Features

  • High Performance: Emotion is optimized for speed, ensuring quick rendering of styles and reducing the impact on your application’s performance.

  • Dynamic Styling: Styles can change based on props or component state, allowing for responsiveness and interactivity without additional overhead.

  • Theming Support: Built-in theming capabilities make it easy to apply consistent styles across components, enhancing maintainability and visual appeal.

  • Scoped Styles: Emotion allows styles to be encapsulated at the component level, preventing collisions and ensuring they apply only where intended.

  • Server-Side Rendering: It supports server-side rendering, ensuring that styles are rendered correctly on initial load, improving SEO and user experience.

  • Lightweight Bundle Size: This library is designed to have a minimal footprint, which helps keep your overall bundle size low and improves load times.

  • Flexible Syntax: With support for both object and string styles, it caters to a wide range of preferences and use cases among developers.

  • Built-In CSS Support: Emotion supports the full CSS specification, meaning you can use all the powerful features of CSS within your styled components.