React Vs. Preact: A Detailed Comparison

React Vs. Preact: A Detailed Comparison

As you know, React is a library effectively utilized and examined by front-end developers. It tackles a ton of typical issues in interface improvement. It's a strong, versatile, and adaptable tool that is valuable for creating the latest & modern UIs. React is the most trending JavaScript library for single-page apps since jQuery.

Nonetheless, it's hard to contend with the fact that React is weighty, and its license permit is dangerous for specific organizations. On the opposite side, we have Preact, one of the littlest choices to React (regarding document size). Preact is accessible with the MIT permit and generally supports famous browsers, including IE9+, similar to React.

Preact and React are the most well-known frameworks for building web applications. Although they share a few likenesses, they likewise have a few distinctions. In this blog, we will investigate some of the essential highlights of the two frameworks and contrast them with the assistance you decide the ideal choice.

But before moving ahead, let's first discuss in brief React & Preact.

What is React?

React is a JavaScript library used for designing UI. It was made by Facebook and got utilized by organizations like Netflix and Airbnb. It is a revelatory, effective, and adaptable JavaScript library that simplifies working with the DOM. React can be utilized with different programming dialects and has enormous third-party libraries that make outsider libraries and tools.


  • Easy to Learn and Use

  • Reusable Components

  • It's a developed structure with an enormous local area, so many assets are accessible.

  • It is additionally adaptable so that you can involve it in different apps.


  • Learning can be a challenging task.

  • It is generally closed to troubleshooting React applications.

What is Preact?

Preact is a quick, lightweight choice to React. It's smaller in size and direct than React, so it's simpler to learn and utilize. Preact is additionally more productive and quicker and uses less memory. If you're searching for a straightforward, lightweight choice for your web application or site, Preact is a fantastic decision. It's easy to learn and utilize and more effective than React, so it'll run quicker and use less memory.

Preact is a quick, lightweight choice to React that offers similar advantages. Before the switch, you should know about a few likely downsides to utilizing Preact.


  • Offers similar advantages to React

  • Quick and lightweight

  • Straightforward & easy to utilize

  • Extraordinary for little projects


  • It may not be appropriate as React for large projects.

  • Need for local area support.

How to migrate to Preact

To move to Preact, you should add the preact-compact package and change your webpack.config record a tad. You can track down point-by-point directions on Preact's official site. We should specify that you can utilize React and Preact on a fundamental level, so there's no specific need to pick one library. You have to choose as indicated by your purpose and undertakings. The principal motivation for picking Preact is to care about legitimate results and licenses from Facebook's side. Along these lines, you can pick React on the off chance that you couldn't care less about the likely issue with Facebook.

Furthermore, you generally can switch among libraries and update your undertaking to utilize Preact, assuming you adhere to React guidelines. Some UI designers use React during the development stage and afterward change to Preact for creation. It's vital that from one perspective, to utilize Preact, you need to dominate React initially. Then again, you can get familiar with a new worldview using Preact.

Critical differences between React and Preact

The difference between React & Preact is as follows:

  • React is a library made by Facebook. It has an enormous local area and is involved with the most influential organizations, including Facebook, Netflix, and Airbnb. React is a finished answer for making extraordinary UIs. Preact is a choice to React that incorporates just the fundamentals for making UIs. It's a lot lighter-weight than React and has a more modest impression. Preact is quicker than React, which can be significant for the execution of delicate applications.

  • Hooks are stored separately in Preact and must get imported differently than React. With Preact, you can use old HTML attributes as it doesn't push JSX for client-side templating, unlike React.

  • The principal distinction is, obviously, the size. For comparison, the gzipped size of React is 45 Kb, while the gzipped size of Preact is just 3 Kb with a similar ES6 Programming API interface.

  • Preact adheres more closely than React to the DOM specification; custom events are supported with case-sensitive names, and custom elements are handled similarly to standard features.

  • Preact does not implement a synthetic event system for size and performance reasons. It uses the browser's standard addEventListener to register event handlers, meaning event naming and behavior work the same in Preact as in plain JavaScript / DOM.

  • React implements its synthetic event system for event handling, reducing app performance, while Preact has no synthetic event. Instead, it uses the browser's addEventListener for performance and size benefits.

  • If you're looking for a lighter-weight alternative that's still feature-rich and performant, Preact might be the right choice for you. Preact has many similar benefits as React; however, it's easier and simpler to learn. It's additionally quicker, making it ideal for building more small applications or utilizing cell phones. Even so, Preact has less flexibility than React and has fewer assets.

  • In React, for interacting with the value of props.children, there is a specific collection of methods called the Children API. Preact usually does not need this, so they advise using the built-in array methods.

  • In Preact, props.children can be a virtual DOM node, an empty value, such as null, or an array of virtual DOM nodes. Since children can be used or returned to their current state, the first two scenarios are the most straightforward and frequent.

  • Preact supports the same ECMAScript and is highly compatible with the React APIs, making it compelling enough to integrate into an active React project for improved performance.

React and Preact is excellent choices for any front-end development; however, they have various qualities. Preact is quicker, while React has more features. If you're searching for a straightforward, lightweight choice, Preact is a decent decision. If you want more parts or need to utilize the most recent innovation, React is a superior choice. So it all depends on your preferences.

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