Software Alternatives, Accelerators & Startups

rollup.js VS Intro.js

Compare rollup.js VS Intro.js and see what are their differences

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rollup.js logo rollup.js

Rollup is a module bundler for JavaScript which compiles small pieces of code into a larger piece such as application.

Intro.js logo Intro.js

Simple Javascript framework for adding screen tips
  • rollup.js Landing page
    Landing page //
    2023-02-09
  • Intro.js Landing page
    Landing page //
    2022-03-29

rollup.js features and specs

  • Tree Shaking
    Rollup.js performs treeshaking to eliminate dead code, resulting in smaller bundle sizes. It analyzes the dependency tree and includes only the parts of the code that are actually used.
  • Output Formats
    Supports multiple output formats including ES modules, CommonJS, AMD, UMD, and IIFE. This makes it versatile for different use cases.
  • Plugins
    Rollup.js has a rich ecosystem of plugins that extend its functionality, such as code transformation, minification, and support for various types of modules.
  • Code Splitting
    Supports code splitting, allowing you to break your code into smaller chunks that can be loaded on demand. This improves performance for larger projects.
  • Efficient Bundling
    Offers efficient bundling by removing duplicates and ensuring that each module gets included only once, which contributes to reduced bundle size.
  • Minimal Configuration
    Generally requires minimal configuration to get started, focusing on simplicity and ease of use.

Possible disadvantages of rollup.js

  • Learning Curve
    Although relatively simple to use, there is still a learning curve associated with understanding its configuration and the plugin system.
  • Initial Build Time
    The initial build time can be slower compared to some other bundlers, particularly for larger projects.
  • Limited Built-in Features
    Rollup.js focuses on being a minimalist tool, so it lacks some of the built-in features that other bundlers may have. Often, additional functionality needs to be added via plugins.
  • Plugin Compatibility
    Not all plugins work seamlessly with Rollup.js, and there may be occasional compatibility issues, especially with plugins originally designed for other bundlers.
  • Node.js Ecosystem
    While Rollup.js excels in bundling for browsers, it is not as commonly used for Node.js applications compared to other tools like Webpack.
  • Community Size
    The community size is smaller compared to other bundling tools like Webpack, which can sometimes make finding solutions to issues more challenging.

Intro.js features and specs

  • User-Friendly Interface
    Intro.js provides an intuitive and easy-to-use interface for creating guided tours on websites, making it accessible for users with varying technical skills.
  • Customizable
    Intro.js is highly customizable, allowing developers to tailor the look and feel of the tour to match the existing design of their website.
  • Lightweight
    The library is lightweight, ensuring that adding it to a website does not significantly increase load times or affect performance.
  • Cross-Browser Support
    Intro.js supports all major browsers, ensuring a consistent experience for users regardless of their browser choice.
  • Rich API
    It offers a rich API, enabling developers to integrate the tool into their applications seamlessly and extend its functionality as needed.

Possible disadvantages of Intro.js

  • Limited Interactivity
    While Intro.js provides basic guided tours, it lacks advanced interactive features that might be needed for more complex walkthroughs.
  • Dependency on JavaScript
    As a JavaScript library, Intro.js requires users to have JavaScript enabled in their browsers, which might not be the case for all users.
  • Potential for User Overload
    Overusing or poorly implementing Intro.js guides can overwhelm users, leading to reduced engagement or missed information.
  • Limited Free Version
    The free version of Intro.js offers limited features compared to the paid plans, which may restrict use for developers not willing to pay for premium features.
  • Learning Curve
    While it is user-friendly, new users may encounter a learning curve when trying to implement advanced customizations or complex tours.

Analysis of rollup.js

Overall verdict

  • Rollup.js is a highly recommended choice for projects where ES6 modules are extensively used, and the goal is to produce compact and clean output. It's particularly beneficial for library authors aiming to provide their libraries in multiple formats.

Why this product is good

  • Rollup.js is good due to its efficient bundling process that helps in creating smaller and faster JavaScript files. It uses ES6 modules which enable better tree shaking and helps in removing unused code, leading to cleaner and more optimized builds. Additionally, Rollup has a simple and modular architecture that can be extended with plugins to support various build processes and features.

Recommended for

  • JavaScript library authors
  • Developers prioritizing ES6 module syntax
  • Projects that require efficient tree shaking
  • Those needing a customizable and streamlined bundling process

rollup.js videos

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Intro.js videos

Intro.js: Onboard New Users with a Quick Wizard

More videos:

  • Review - Add a Step-by-Step guide to your Website with intro.js

Category Popularity

0-100% (relative to rollup.js and Intro.js)
Web Application Bundler
100 100%
0% 0
User Engagement
0 0%
100% 100
JS Build Tools
100 100%
0% 0
User Onboarding And Engagement

User comments

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Reviews

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

rollup.js Reviews

Rollup v. Webpack v. Parcel
Rollup provides much simpler configuration over webpack 4 and has a host of pre-configured plugins that are a breeze to incorporate into your project. Rollup's also the fastest of the build tools period.
Source: x-team.com

Intro.js Reviews

15 best user onboarding software you need to try in 2023
The free version offers tooltips and screen portion highlights, which might suffice if your app is relatively straightforward. However, Intro.js is designed to be cut and pasted into your app’s code to create onboarding functions it wouldn’t otherwise have. Therefore, you’ll still need to have built a basic onboarding workflow ready.
8 Best Usetiful Alternatives and Competitors That Are More Professional
The onboarding elements are very limited, so any user onboarding designed with Intro.js will not be likely to satisfy every need of a user.
Source: userguiding.com

Social recommendations and mentions

Based on our record, rollup.js should be more popular than Intro.js. It has been mentiond 62 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.

rollup.js mentions (62)

  • JavaScript is so redundant
    Why are there so many JavaScript build tools? Gulp, Grunt, Webpack, Laravel Mix, Rollup.js, and now Vite. And these are just the ones that I've worked with. Haven't we solved this problem? And why build a new tool? Why not improve existing tools? - Source: dev.to / 8 days ago
  • ⚔️ Vite vs. Turbopack in 2025: Which One to Choose?
    Vite (pronounced veet) was created by Evan You (Vue's creator) and launched in 2020. It uses native ES modules in the browser and esbuild for lightning-fast dev servers and Rollup for optimized production builds. - Source: dev.to / 11 days ago
  • Valentine’s Day Breakup: React Dumps Create React App
    Vite is a modern frontend build tool used to develop fast and super efficient web applications. It serves files instantly and ensures that changes are updated immediately after they are implemented. It makes use of Rollup for optimized builds and has support for when you want to build a Javascript library (instead of a full app). - Source: dev.to / 2 months ago
  • Advanced Guide to Using Vite with React in 2025
    In 2025, mastering Vite for your React projects means leveraging powerful configurations, intelligent optimizations, and a robust plugin ecosystem. By understanding Vite’s modern architecture—native ES modules (ESM) during development and optimized Rollup bundling for production—you can significantly streamline your workflow, improve developer experience, and deliver fast, performant applications at scale. - Source: dev.to / 3 months ago
  • Optimizing React Development with Vite🤩.
    6. Production-Ready Code Vite uses Rollup for production builds, which optimizes the code by bundling it efficiently, performing tree shaking, and minifying JavaScript. This results in smaller, optimized production builds that are ready for deployment. - Source: dev.to / 6 months ago
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Intro.js mentions (15)

  • 7 best product tour JavaScript libraries for frontend apps
    Intro.js is an open source JavaScript library that provides an easy way to create simple and effective product tours. It has an approximate file size of 12.5 KB, so it’s a lightweight library that makes building simple walkthroughs easy: One of the key features of Intro.js is its customizability. It allows you to tailor your tours to align with your application's branding by offering various themes and... - Source: dev.to / 10 months ago
  • Guided Tours Solution for Your Web Application
    Intro.js like the others offers a rich set of features such as customizable steps and tooltips, keyboard navigation, theming, progress indicators and more. Like others, this library also has extensive documentation. Intro.js has open source licence under AGPL v3 and a commercial licence with different price plans. - Source: dev.to / over 1 year ago
  • Need Help With Website Guide
    Intro.js might be what you’re looking for. Source: almost 2 years ago
  • Button pop up with Java and CSS
    Everything in the browser works with just CSS, JavaScript and HTML. There are JavaScript libraries for things like you are describing, if you are able to customize your site with JS - you should be able to use some of them. For example this one: https://introjs.com/. Source: over 2 years ago
  • How come 1 cookie expires and the other one is not?
    For context, I'm using introjs to make a small tour in my website in 2 different pages. I'm making a cookie wheather a user has visited the page so I can only show the tour only once. My issue is that one cookie sets up with an expiration of 400 days as its supposed to be and the other one stays Session only but both are made from the exact same function with the exacth same parameters. Source: over 2 years ago
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What are some alternatives?

When comparing rollup.js and Intro.js, you can also consider the following products

Webpack - Webpack is a module bundler. Its main purpose is to bundle JavaScript files for usage in a browser, yet it is also capable of transforming, bundling, or packaging just about any resource or asset.

ShepherdJS - Guide your users through a tour of your app.

Parcel - Blazing fast, zero configuration web application bundler

UserGuiding - Create in-app experiences with the most straightforward product adoption platform — quick implementation, lasting user engagement.

npm - npm is a package manager for Node.

Appcues - Improve user onboarding, feature activation & more — no code required! Stop waiting on dev and start increasing customer engagement today. Try it for free.