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Preact.js VS Ionic

Compare Preact.js VS Ionic and see what are their differences

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Preact.js logo Preact.js

Preact is a fast 3kB alternative to React with the same modern API. Components & Virtual DOM.

Ionic logo Ionic

Ionic is a cross-platform mobile development stack for building performant apps on all platforms with open web technologies.
  • Preact.js Landing page
    Landing page //
    2023-05-11
  • Ionic Landing page
    Landing page //
    2023-07-12

Preact.js features and specs

  • Size
    Preact is very small in size (about 3KB gzipped), which makes it easy to load and faster to execute, resulting in improved performance and quicker load times.
  • Compatibility
    Preact is largely compatible with React, allowing developers to switch to Preact with minimal code changes. This makes it easier to adopt for projects already using React.
  • Performance
    Due to its small size and efficient design, Preact offers excellent performance, especially on low-powered devices and in applications with heavy user interactions.
  • Ecosystem
    Preact can work with many tools and libraries that are designed for React, giving developers access to a rich ecosystem of resources.
  • Community
    Preact has an active and growing community that provides support, plugins, and third-party tools, making it easier for developers to find solutions and share knowledge.

Possible disadvantages of Preact.js

  • Feature Set
    While Preact covers most of the core React features, it lacks some of the advanced functionality present in React, which may require additional workarounds or third-party libraries.
  • Learning Curve
    For developers coming from a non-React background, learning Preact might involve a learning curve, particularly because of its similarities and subtle differences with React.
  • Tooling Compatibility
    Although many tools designed for React can work with Preact, some might not be directly compatible, requiring additional configuration or patches.
  • Community Size
    While Preact has a supportive community, it is smaller compared to the massive React community, which can result in fewer available resources and third-party packages.
  • Maturity
    Preact, being newer and less widely adopted than React, might not have the same level of battle-tested reliability for all use cases, especially for large scale applications.

Ionic features and specs

  • Cross-Platform Development
    Ionic allows developers to build applications for multiple platforms such as iOS, Android, and the web using a single codebase. This significantly reduces development time and costs.
  • Rich UI Components
    Ionic provides a wide range of pre-built UI components that are customizable and designed to look and feel native on all devices. This makes it easier to create visually appealing and consistent interfaces.
  • Integration with Angular
    Ionic is tightly integrated with Angular, a popular and widely-used front-end framework. This integration provides a robust architecture for building complex applications.
  • Active Community and Extensive Documentation
    Ionic has an active community and extensive documentation, tutorials, and resources. This makes it easier for developers to find support and resolve issues.
  • Cordova and Capacitor Plugins
    Ionic apps can leverage Cordova and Capacitor plugins to access native device features like the camera, GPS, and file system, providing near-native functionality.

Possible disadvantages of Ionic

  • Performance Issues
    Because Ionic uses WebView for rendering, performance can sometimes be inferior to native applications, particularly for highly interactive or graphically intensive applications.
  • Dependency on Third-Party Plugins
    Ionic heavily relies on third-party plugins for accessing native features. If these plugins are not well-maintained or lack support for certain functionalities, it can lead to challenges.
  • Learning Curve
    While Ionic simplifies cross-platform development, it still requires familiarity with web technologies like JavaScript, CSS, and HTML, as well as frameworks like Angular. This could be a steep learning curve for developers not versed in these technologies.
  • File Size
    Ionic applications tend to have a larger file size compared to native applications, mainly due to the inclusion of WebView and other dependencies. This can impact download times and initial load performance.
  • Rendering Delays
    There can be noticeable delays in UI rendering, especially on older devices, due to the abstraction layer that Ionic provides over native components.

Analysis of Preact.js

Overall verdict

  • Preact.js is a strong option for projects where performance and load time are critical, or where a light footprint is necessary. Its compatibility with React makes it a flexible and efficient alternative in scenarios where React may be overkill due to its larger size.

Why this product is good

  • Preact.js is known for its small size and high performance, making it an excellent choice for developers who need a lightweight alternative to React without sacrificing functionality. It offers a familiar API for React developers, ensuring an easy transition, and is highly efficient in terms of rendering performance. Preact also offers excellent compatibility with existing React tools and ecosystems, meaning many React packages work seamlessly with Preact.

Recommended for

    Preact.js is recommended for developers building applications with stringent performance requirements, those needing to optimize for fast loading times in environments with limited bandwidth or resources, or those looking to integrate React-like architecture in smaller projects without introducing the full weight of the React library.

Analysis of Ionic

Overall verdict

  • Ionic is a good choice for startups, small to medium-sized businesses, and developers who are looking to rapidly build and deploy mobile apps with a consistent look and feel across devices. It is particularly useful when the apps don't require intensive use of native capabilities and where development speed is more important than the performance of strictly native apps.

Why this product is good

  • Ionic is a popular open-source framework used for developing cross-platform mobile applications. It combines HTML, CSS, and JavaScript with front-end frameworks like Angular, React, or Vue to create hybrid applications. Its main advantages are ease of use, a rich component library, and the ability to write once and deploy across multiple platforms, saving time and resources.

Recommended for

  • Developers looking for a single codebase for multiple platforms.
  • Teams that are already proficient in web technologies such as HTML, CSS, and JavaScript.
  • Projects that have simple or moderate use of device hardware and native capabilities.
  • Businesses prioritizing rapid development and deployment over maximizing native performance.

Preact.js videos

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JS frameworks are replaceable

Ionic videos

+ Add

Fitbit Ionic smartwatch review

More videos:

  • Review - Fitbit Ionic Review (IN-DEPTH)
  • Review - Fitbit Versa 2 vs Ionic | Fitness Smartwatch Review (NEW)

Category Popularity

0-100% (relative to Preact.js and Ionic)

Preact.js

Ionic

Javascript UI Libraries
75 75%
Javascript UI Libraries
25% 25
Development Tools
0 0%
Development Tools
100% 100
JavaScript Framework
61 61%
JavaScript Framework
39% 39
Developer Tools
36 36%
Developer Tools
64% 64

User comments

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Reviews

These are some of the external sources and on-site user reviews we've used to compare Preact.js and Ionic

Preact.js Reviews

Top JavaScript Frameworks in 2025
PreactJS is a JavaScript library that is said to be the fast 3Kb alternative to ReactJS using the same modern API. It implements the fastest virtual DOM compared to other frameworks in the market. Moreover, it is one of the smallest libraries in terms of size.
Source: solguruz.com
20 Next.js Alternatives Worth Considering
Preact is like React’s little sibling, smaller in size but with the same familiar moves. It’s cutting down the fluff and zipping through tasks with less overhead. When performance budgets are tight, Preact wiggles in perfectly.
Source: tms-outsource.com
20 Best JavaScript Frameworks For 2023
Preact is built with the same core principle of React – A component-based approach with Virtual DOM while completely compatible with React. It can even use React packages without compromising on speed, performance, and leaner size. In instances where the full potential of React isn’t necessary, most developers even use React during development and switch to Preact for...
Source: www.lambdatest.com
Top 15 jQuery Alternatives To Know
ReactJS is a powerful JavaScript library to create user interfaces. Developers can design easy views at each stage in the application and there is regular update and rendering for the actual components whenever there is any data alteration. It is component-driven and creates encapsulated components that manage their own state.
Source: www.spec-india.com
Top 5 JavaScript Frameworks To Learn in 2021
But according to the graph above, we can notice a decrease in interest in Preact. This might result from having many similar frameworks with the same specs, like react-lite, Inferno, etc. However, knowing a framework like Preact will be useful for your development journey.
Source: enlear.academy

Ionic Reviews

Top 10 Flutter Alternatives for Cross-Platform App Development
Ionic is mainly known for its simplicity and, thus, is an appropriate choice for those who have a small team or own startups. The framework is popular for its predesigned UI components, which catalyze the overall development process.
Source: www.moontechnolabs.com
Exploring 15 Powerful Flutter Alternatives
Ionic is an open-source UI framework that uses web technologies like HTML, CSS, and JavaScript to build progressive web and mobile apps. Ionic shines for apps centered around forms, lists, and data. The extensive UI components and flexible layout options facilitate quickly scaffolding up CRM-style interfaces for managing records and inventory without needing to style every...
Source: positiwise.medium.com
Should I use Moxly to create Ionic apps faster? Ionic vs Moxly
It’s always important that an app is responsive and especially important with Ionic, which is designed to reach multiple platforms with one codebase. This is not supported by Moxly, which is not good in the realm of Ionic. That’s where things look different again with Ionic. There you can create Responsive Apps and websites.
Source: nwicode.medium.com
THE BEST 34 APP DEVELOPMENT SOFTWARE IN 2022 LIST
One codebase. Any platform. Now in React and Angular. Ionic Framework is an open-source mobile UI toolkit for building high-quality, cross-platform native and web app experiences. Move faster with a single codebase, running everywhere. Free and open-source, Ionic offers a library of mobile-optimized UI components, gestures, and tools for building fast highly interactive apps.
Source: www.edigitalagency.com.au
Android Studio Alternative
Ionic framework is an open-source UI toolkit that allows web technologies to be used to create high-quality mobile and desktop applications. Ionic architecture is based on the user interface or user experience of the application. It’s simple to understand, integrate, or utilize without a front frame using a simple script that incorporates other libraries or frameworks like...
Source: www.educba.com

Social recommendations and mentions

Based on our record, Preact.js should be more popular than Ionic. It has been mentiond 93 times since March 2021. We are tracking product recommendations and mentions on various public social media platforms and blogs. They can help you identify which product is more popular and what people think of it.

Preact.js mentions (93)

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Ionic mentions (10)

  • Hello from Team OutSystems!
    As you may remember, Ionic, the company where I’ve worked as a Developer Advocate for the past year and a half, was acquired in late 2022 by OutSystems. As part of that acquisition, I’m excited to announce that I transitioned to a Lead Developer Advocate position on the OutSystems side of the house this past November. In my new role, I will continue doing what I love – making it easier for developers to build... - Source: dev.to / over 1 year ago
  • Best Programming language to create Mobile Application ?
    You're looking for a framework to build a progressive web app. Such as Ionic: https://ionic.io/. Source: almost 2 years ago
  • What is this type of styling called?
    Some website's that I've collected that use the styling I'm on about; Ionic.io, spline.design, wickedbackgrounds.com, coolbackgrounds.io,. Source: about 3 years ago
  • Android Games with Capacitor and JavaScript
    In the past I would have used something like Cordova, but this new thing from the folks at Ionic has TypeScript support out of the box for their native APIs and support for using any Cordova plugins you might miss. - Source: dev.to / over 3 years ago
  • 10 Reasons to Choose Ionic for Mobile Development
    Ionic is the only cross-platform development stack that has Enterprise support and integrations for teams building employee and customer-facing apps. Ionic offers dedicated support, security features like Biometrics and Single Sign-on, and cloud services for remote app updates, app builds, and app store distribution. - Source: dev.to / almost 4 years ago
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What are some alternatives?

When comparing Preact.js and Ionic, you can also consider the following products

Svelte - Cybernetically enhanced web apps

React Native - A framework for building native apps with React

Vue.js - Reactive Components for Modern Web Interfaces

Apache Cordova - Platform for building native mobile applications using HTML, CSS and JavaScript

React - A JavaScript library for building user interfaces

NativeScript - Build truly native apps with JavaScript

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