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Svelte vs React – Which Framework Is Better?

by Rajni
Svelte vs React FRAMEWORK
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Introduction to Svelte vs React

JavaScript frameworks have become the cornerstone of modern web development, enabling developers to build robust and interactive applications. Among the many JS Frameworks available, Svelte and (Svelte vs React) React have gained significant popularity. In this blog, we will dive into a detailed comparison of these two frameworks to help you decide which one might be better suited for your next project.

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What is JavaScript?

JavaScript is a high-level programming language that is primarily used for developing interactive and dynamic web applications. It was created by Brendan Eich at Netscape in 1995 and has since become one of the most widely used programming languages for both front-end and back-end web development.

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What are JavaScript Frameworks?

JavaScript frameworks are libraries or sets of pre-written code that provide developers with a foundation and structure to build web applications more efficiently. These frameworks offer reusable components, tools, and abstractions that simplify common tasks and provide solutions to common challenges faced during web development.

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Understanding Svelte Framework

Svelte is a modern JavaScript framework used for building user interfaces. It takes a different approach compared to other frameworks like React, Vue.js, or Angular. Rather than running in the browser, Svelte compiles your code during the build process to highly efficient JavaScript that manipulates the DOM directly.

Benefits of React
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What are the benefits of using the Svelte Framework?

Using the Svelte framework offers several benefits for web developers:

  • Performance: Svelte is known for its excellent performance. By compiling components to optimized JavaScript code during the build process, Svelte eliminates the need for a virtual DOM and reduces runtime overhead. This results in faster initial load times, smoother animations, and overall better runtime performance.
  • Small bundle sizes: Svelte generates highly optimized code that only includes the necessary functionality for each component. This approach leads to smaller bundle sizes, which is beneficial for reducing bandwidth usage and improving the application’s load time, especially on slower networks or mobile devices.
  • Developer experience: Svelte provides a simple and intuitive syntax that closely resembles HTML, CSS, and JavaScript. This familiarity makes it easier for developers to get started quickly and reduces the learning curve. Additionally, Svelte’s approach to reactive programming and component-based architecture promotes code reusability and maintainability.
  • Reactive programming: Svelte’s reactivity system allows developers to declaratively define data dependencies within components. This means that when the underlying data changes, the affected parts of the UI automatically update. This reactive approach simplifies state management and reduces the amount of boilerplate code needed to handle data changes.
  • Smoother animations and transitions: Svelte has built-in support for animating elements and transitions. The framework provides an easy-to-use API for defining animations and handles the necessary updates and interpolations behind the scenes. This makes it straightforward to create smooth and visually appealing animations within your application.
  • Growing ecosystem: Although Svelte’s ecosystem is still evolving, it has been gaining momentum and has a growing number of libraries, tools, and resources available. This includes routing solutions, UI component libraries, build tools, and integrations with popular frameworks and libraries.
  • Easy integration: Svelte can be seamlessly integrated into existing projects, allowing developers to adopt it incrementally. It supports interoperability with other frameworks and libraries, enabling you to leverage existing code and gradually migrate to Svelte.
  • Active community and support: Despite being relatively newer compared to some other frameworks, Svelte has an active and supportive community. Online forums, documentation, tutorials, and learning resources are available to help developers get started, share knowledge, and troubleshoot issues.

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When to use Svelte?
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When to use Svelte?

Svelte is a versatile framework that can be used in various scenarios. Here are some situations where Svelte is particularly well-suited:

Performance-critical applications: If you’re working on an application that requires exceptional performance, such as real-time dashboards, data-intensive visualizations, or mobile applications, Svelte’s efficient code generation and smaller bundle sizes can give you a performance edge.

For Example: Let’s say you are developing a real-time dashboard for monitoring stock market data. The dashboard needs to update in real time and display complex visualizations with high performance. In this scenario, Svelte would be a great fit. Its efficient code generation and smaller bundle sizes enable faster rendering and optimal performance. The reactive nature of Svelte allows you to easily update the dashboard in real-time as new data arrives, providing a seamless and responsive user experience. Additionally, the simplicity of Svelte’s syntax makes it easier to develop and maintain the complex UI components required for the dashboard.

Small to medium-sized projects: Svelte’s simplicity and small learning curve make it a great choice for smaller projects or prototypes. If you need to quickly build an interactive web application without the overhead of a more complex framework, Svelte can help you achieve that. 

For Example: Let’s say you’re a freelance web developer and a client approaches you with a request for a simple survey application. The client wants a lightweight and responsive web app that allows users to answer a series of questions and submit their responses. They also want the survey results to be displayed in real-time on an administrator dashboard. In this scenario, Svelte’s simplicity and small learning curve make it an ideal framework for the project. You can quickly set up a Svelte project and create the necessary components, such as survey questions, input fields, and real-time result updates.

Progressive enhancement: If you have an existing server-rendered application or a static website and want to progressively enhance it with more interactive features, Svelte’s ability to be incrementally integrated into existing projects can be beneficial. You can start by adding Svelte components to specific parts of your application without the need for a full rewrite.

For instance: Let’s say you have a server-rendered e-commerce website that works well, but you want to enhance it with more interactive features to improve the user experience. Instead of completely rewriting the entire website, you can use Svelte to incrementally integrate interactive components into specific parts of the application. You might choose to enhance the product listing page with a filtering and sorting functionality. With Svelte, you can create reusable filtering and sorting components that can be added to the existing page without disrupting the server-rendered functionality. The Svelte components will be responsible for handling the interactive features, such as updating the product list based on user-selected filters or sorting criteria.

Developer experience: Svelte’s intuitive syntax and declarative nature contribute to an enjoyable developer experience. If you value a framework that allows you to write clean and concise code while maintaining a good balance between flexibility and structure, Svelte can be a great fit.

For Example: Imagine you’re a frontend developer working on a collaborative project with a team. Your task is to build a dashboard that displays real-time data from various sources, such as user statistics, sales figures, and social media metrics. The dashboard needs to be interactive, visually appealing, and easy to maintain. In this scenario, Svelte’s intuitive syntax and declarative nature make it an excellent choice for a pleasant developer experience. The clean and concise code you write in Svelte allows you to focus on implementing the desired functionality without getting bogged down by unnecessary boilerplate or complex configurations. You can leverage Svelte’s component-based architecture to break down the dashboard into reusable and self-contained components. For example, you can create separate components for charts, data tables, and navigation elements. This modular approach promotes code reusability, maintainability, and easier collaboration within your team.

Teams with HTML, CSS, and JavaScript expertise: Svelte’s syntax closely resembles HTML, CSS, and JavaScript, making it easier for developers already familiar with these languages to transition into Svelte. If your team has expertise in these web technologies, adopting Svelte can be a smooth process.

Projects with performance constraintsIf you’re building applications for low-powered devices or networks with limited bandwidth, Svelte’s small bundle sizes and efficient rendering can help optimize performance and deliver a better user experience.

For instance: Let’s imagine a team of developers working on a project for a nonprofit organization that aims to provide educational resources to underprivileged communities. The target audience primarily uses low-powered devices like older smartphones or tablets with limited processing power and memory. Additionally, the areas where the organization operates have limited internet connectivity, resulting in slow and unreliable network speeds.

In such situations, Svelte’s compiler takes a different approach compared to traditional frameworks. Instead of shipping a large JavaScript bundle to the client’s browser and performing runtime interpretation, Svelte compiles components into highly optimized JavaScript code during the build process. This compilation step eliminates unnecessary abstractions and reduces the final bundle size.

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Understanding React Framework

Developed by Facebook, React is a widely adopted JavaScript library known for its component-based architecture, virtual DOM, and one-way data flow. It offers a rich ecosystem and extensive community support.

Benefits of React
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What are the benefits of using React Framework?

Using the React framework provides several benefits for web development projects:

  • Component-Based Architecture: React follows a component-based architecture, allowing developers to build complex UIs by breaking them down into smaller, reusable components. This modular approach promotes code reusability, maintainability, and scalability.
  • Virtual DOM: React uses a virtual DOM (Document Object Model) to efficiently update and render UI components. By leveraging a virtual representation of the actual DOM, React minimizes costly direct manipulation of the real DOM, resulting in improved performance and faster UI updates.
  • Declarative Syntax: React’s declarative syntax allows developers to describe how the UI should look based on the application state. Instead of manually manipulating the DOM, developers can define the desired UI structure and let React handle the rendering efficiently. This approach leads to cleaner and more readable code.
  • Efficient Updates: React employs a reconciliation algorithm that efficiently updates only the necessary parts of the UI when the application state changes. By comparing the previous and current state, React updates the components efficiently, minimizing the number of DOM manipulations and resulting in better performance.
  • Community and Ecosystem: React has a vast and active community, providing extensive support, resources, and third-party libraries. The ecosystem around React is robust, with numerous tools, UI component libraries, and development patterns available, making it easier to build and maintain React-based projects.
  • React Native: React’s versatility extends beyond web development. React Native, a framework built on top of React, allows developers to build native mobile applications for iOS and Android using JavaScript. By leveraging React knowledge, developers can create cross-platform mobile apps with a single codebase.
  • Performance Optimization: React provides several performance optimization techniques, such as memoization, virtualization, and lazy loading, to optimize the rendering process and enhance the overall application performance. These optimizations help deliver a smooth user experience, particularly in large and complex applications.
  • Strong Community Support: React is backed by Facebook and has a vibrant community of developers actively contributing to its growth and improvement. This strong community support ensures regular updates, bug fixes, and enhancements to the framework, keeping it up to date with evolving web development standards.
When to use react?
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When to use React Framework?

The React framework is commonly used when developing web applications, particularly those that require dynamic user interfaces. Here are some scenarios where using the React framework is beneficial:

Single-page Applications (SPAs): React is well-suited for building SPAs where most of the application logic resides on the client side. React allows you to create reusable components that can efficiently update and render only the necessary parts of the UI, resulting in a smooth user experience.

For Instance: Let’s say you’re developing a task management application where users can create, update, and delete tasks. In SPA, the entire application runs within a single HTML page, and most of the logic is handled on the client side. With React, you can create reusable components such as a TaskList component to display the list of tasks, a TaskForm component to add or edit tasks, and a TaskItem component to render individual tasks. Each of these components encapsulates its own logic and UI.

Large-scale Applications: React’s component-based architecture makes it easier to manage complex applications by breaking them down into smaller, reusable components. This modularity promotes code reusability, maintainability, and scalability.

For Example: Let’s say we’re building an e-commerce website that sells various products. The application needs to handle a wide range of functionalities, such as product listing, searching, filtering, adding items to the cart, and processing payments. With React’s component-based architecture, we can break down the application into smaller, reusable components. Here are a few examples of components that we might use:

  • ProductList: This component displays a list of products retrieved from a backend API. It renders individual Product components for each product item.
  • SearchBar: This component allows users to search for specific products. It includes an input field and a button to trigger the search.
  • FilterOptions: This component provides filtering options to refine the product list based on categories, price ranges, or other attributes.
  • Cart: This component keeps track of the items added to the cart. It displays the current cart contents and allows users to modify quantities or remove items.
  • CheckoutForm: This component handles the checkout process, including collecting customer information, shipping details, and processing payments.

Interactive User Interfaces: If your application requires frequent updates to the user interface based on user input or changing data, React’s virtual DOM (Document Object Model) diffing algorithm comes into play. It efficiently updates only the necessary parts of the UI, reducing the overall computational load.


For Example: Let’s say you’re building a social media application where users can post updates and like each other’s posts. One key feature of your application is a real-time notification system that updates the user interface whenever a new post is made, or a post receives a new like. In this scenario, React’s virtual DOM diffing algorithm would be extremely useful. When a new post is made or a like is added, the underlying data changes, and you need to reflect those changes in the user interface. Instead of re-rendering the entire UI from scratch, React’s virtual DOM compares the previous state of the UI with the updated state.

Cross-platform Development: React can be used to develop both web applications and mobile applications. With libraries like React Native, you can leverage your existing React knowledge to build native mobile apps for iOS and Android platforms.

Suppose you want to create a simple to-do list application. You start by setting up a new React Native project and creating a component called “TodoList”. You can use the same React concepts you’re familiar with, such as components, state, and props, to build your application. In your TodoList component, you can define a state variable to hold the list of tasks and render them in a list view. You can also add a text input and a button to allow the user to add new tasks to the list. When the user taps on a task, you can mark it as completed and update the UI accordingly. Once you’ve finished developing the application using React Native, you can run it on both iOS and Android platforms. React Native provides tools and commands to compile your JavaScript code into native code for each platform. This allows your application to have the performance and capabilities of a native app while still being written in JavaScript.

Collaboration: React’s popularity has led to a vast ecosystem of libraries, tools, and community support. This means you can find numerous resources, tutorials, and solutions to common problems, making collaboration with other developers easier.

For instance, let’s consider a scenario where a developer is working on a React project that requires the implementation of a complex charting functionality.

Instead of building the charting component from scratch, the developer can collaborate with the React community by utilizing existing open-source libraries such as React-ChartJS or Victory. These libraries provide pre-built charting components with various customization options and functionalities.

By incorporating one of these libraries into the project, the developer not only saves time and effort but also benefits from the collaborative efforts of the library maintainers and contributors. They have already put in the effort to develop and maintain a robust charting solution, and their work is available for others to use and build upon.

SEO-friendly Applications: Although React is primarily a client-side framework, with server-side rendering techniques (such as Next.js), you can achieve server-side rendering and make your application more search engine-friendly. This is particularly useful when you want your web pages to be indexed by search engines.

Let’s say you have a React application that displays a list of products. Normally, when a search engine crawls your website, it would only see the initial HTML markup without any dynamically generated content. However, by incorporating server-side rendering using Next.js, you can generate the initial HTML on the server and send it to the client. This means that when search engine crawlers visit your website, they will see the fully rendered HTML content, including the list of products.

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Svelte vs React - Comparison between them








Smaller footprint

Larger footprint

Learning Curve

Relatively easy to learn

Steeper learning curve


Compiles components to highly optimized JavaScript code

Virtual DOM diffing


Faster runtime performance

Slower runtime performance

Bundle Size

Smaller bundle size

Larger bundle size

Code Readability

Declarative syntax and minimal boilerplate

JSX syntax and more verbose

Component Model

No virtual DOM; updates DOM directly

Virtual DOM; updates are reconciled


Automatic reactivity on variable changes

Explicitly define state and props


Limited ecosystem and fewer libraries

Rich ecosystem and extensive libraries

Developer Experience

Simpler and more intuitive

Extensive tooling and debugging support


Growing community, gaining popularity

Widely adopted and highly popular


Fewer breaking changes and stable API

Frequent updates and evolving ecosystem


Works well with existing libraries and frameworks

Works well with existing libraries and frameworks


Great for small to medium-sized projects

Great for large-scale and complex projects


Sufficient documentation and resources

Extensive documentation and tutorials

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Svelte vs React - Quick Review of Features

  • Svelte is a compiler that compiles your code into highly efficient JavaScript code at build time.
  • Svelte is lightweight and has a small bundle size.
  • Svelte is easy to learn and has a low learning curve.
  • Svelte has a simple syntax that is easy to read and write.
  • Svelte has a reactive store that makes it easy to manage the state.
  • Svelte has a built-in animation library that makes it easy to create animations.
  • React is a library for building user interfaces.
  • React is highly modular and can be used with other libraries or frameworks.
  • React has a large community with many resources available online.
  • React has a virtual DOM that makes it fast and efficient.
  • React has a component-based architecture that makes it easy to reuse code.
  • React has excellent developer tools that make it easy to debug and test your code.
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Svelte vs React - Some popular sites


  • Spotify
  • The New York Times
  • Square
  • Uber Eats


  • Facebook
  • Instagram
  • Netflix
  • Airbnb
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Concluding Thoughts - Svelte vs React : Who wins?

Comparing Svelte vs React in terms of who wins ultimately depends on specific project requirements and developer preferences. React, a widely adopted JavaScript library, offers a mature ecosystem, a large community, and extensive documentation, making it suitable for complex applications and teams that value flexibility and scalability. On the other hand, Svelte, a compiler-based framework, focuses on optimizing performance by moving the heavy lifting from runtime to build-time, resulting in faster rendering and smaller bundle sizes. It provides a simpler and more intuitive syntax, with less boilerplate code, making it an excellent choice for smaller projects or developers who prioritize productivity. Ultimately, the decision between Svelte vs React should be based on the project and the development team’s specific needs, goals, and preferences. If you are a Svelte or a React JS developer,  sign up with Olibr now to explore lucrative job opportunities. 


The top frameworks in the JavaScript frameworks list include React, Svelte, Angular, Vue.js, Ember.js, Preact, Backbone.js, Alpine.js, Aurelia, and Node.js. 

A framework in programming is like a structural foundation that provides a base for the application development process. 

React has a more established and larger ecosystem compared to Svelte. It has a wide range of libraries, tools, and community support available, making it easier to find solutions to common problems and leverage existing resources. However, Svelte’s community is growing rapidly, and it has its own set of tools and libraries. While React may have a more mature tooling ecosystem, Svelte is catching up and gaining popularity.

React has been around for a longer time and has a larger community compared to Svelte. React has gained widespread popularity and is widely adopted by developers and companies worldwide. While Svelte’s community is growing rapidly, it is still relatively newer in comparison.

Yes, it is possible to use Svelte and React together in a project. Since both frameworks can be compiled into JavaScript, you can integrate components built with Svelte into a React application or vice versa. However, it’s important to consider the additional complexity and potential performance implications when combining different frameworks.

Both Svelte and React are used by numerous notable companies and projects. React is extensively used by companies like Facebook, Instagram, Netflix, Airbnb, and many others. Svelte is also gaining popularity and is used by companies like Spotify, Square, and the New York Times. However, the choice of framework often depends on the specific requirements and preferences of the project and the development team.

React has a more established and extensive ecosystem, which means it has a larger collection of documentation, tutorials, and learning resources available. React’s popularity and maturity have led to a wealth of community-driven content, making it easier to find solutions and learn from others. While Svelte’s documentation and learning resources are also growing, it may not have the same breadth and depth as React at this time.

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