
Webpack
esbuild
Parcel
npm
RequireJS
stealjs
JSPM
Rollup is a module bundler for JavaScript which compiles small pieces of code into a larger piece such as application.

Mastros.online WhatsApp Scraper
Mastros.online
Decipher TextMessage
Phantombuster
My Forever Books
Wutsapper
Rocket for WhatsApp
A private and seamless way to view WhatsApp chat exports.

Which is more popular?
Based on our record, rollup.js seems to be more popular. It has been mentioned 68 times since March 2021.
Website, pricing, platforms and company facts side by side.
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|---|---|---|
| Website | rollupjs.org | chatparser.online |
| Pricing | — | |
| Company | — | Startup from Sri Lanka · 2026 |
| Listed in |
In their own words, as submitted to SaaSHub.


No description of rollup.js yet.
Free WhatsApp chat viewer to open exported chats instantly. Upload .txt or .zip files and explore your chat history privately in your browser.
What each product offers, as listed by its team.


Possible disadvantages
An editorial look at what each product does well and who it suits.


Overall verdict
Why this product is good
Recommended for
Overall verdict
Why this product is good
Recommended for
How often each product is chosen within a category, 0–100% relative to the other.


As answered by people managing rollup.js and ChatParser.
ChatParser's answer:
ChatParser stands out because it uses a fully client-side (zero-server) architecture, meaning all chat processing happens directly in the user’s browser. Unlike other tools that upload sensitive data to servers, ChatParser ensures complete privacy.
It also recreates WhatsApp chats in a realistic, app-like interface, making exported conversations easy to read, search, and explore. Combined with fast performance and offline capability, it delivers a smooth and secure experience without requiring installation or login.
ChatParser's answer:
It is faster, more private, and easier to use. No data upload, no login, and works instantly with large chat files.
ChatParser's answer:
Anyone who exports WhatsApp chats and wants an easy, secure way to view them, including students, professionals, and everyday users.
ChatParser's answer:
It was created to solve the problem of messy WhatsApp exports by turning them into a simple, readable, and private chat experience.
ChatParser's answer:
React, TypeScript, IndexedDB, JSZip, and virtual scrolling.
Share your experience with using rollup.js and ChatParser. For example, how are they different and which one is better?
External articles and on-site reviews we used to compare the two products.


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.
We have no reviews of ChatParser yet. Be the first one to post
Recommendations tracked on public social media and blogs since March 2021.


This article presents a bunch of ways how to find unused code, remove it, and configure tools and bundler to prevent dead code in the future. Sections for bundler are based on set of Vite, which under the hood delegates to Rollup in... - Source: dev.to / 3 months ago
The reality is simple: minification was never security. It's a size optimization that bundlers like esbuild, Webpack, and Rollup do by default. Variable renaming slows down human readers but LLMs read minified code like you read... - Source: dev.to / 6 months ago
Before addressing the solution, it's useful to contextualize the role of the bundler. In a modern frontend architecture, the bundler (such as webpack, rollup, or vite) has the task of traversing the application's dependency graph,... - Source: dev.to / 10 months ago
Tracking ChatParser since Apr 2026.
When comparing rollup.js and ChatParser, you can also consider the following products.

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.
Compare Webpack to rollup.js or ChatParser:

Chrome extension that exports WhatsApp Web group members, loaded messages, and recent contacts to CSV, JSON, or JSONL. Local, Web Mode only — no API, no automation.
Compare Mastros.online WhatsApp Scraper to rollup.js or ChatParser:

An extremely fast JavaScript bundler and minifier
Compare esbuild to rollup.js or ChatParser:

Chrome extension that extracts Telegram members, chat messages, recent contacts, mutual groups, and media. Local processing, CSV/JSON/JSONL export, optional Power Mode via the Telegram API.
Compare Mastros.online to rollup.js or ChatParser:

Blazing fast, zero configuration web application bundler
Compare Parcel to rollup.js or ChatParser:

Save your iPhone text messages to your computer. Print iPhone text messages as a PDF. Save and print iPhone text messages for court, trial, business, or personal needs.
Compare Decipher TextMessage to rollup.js or ChatParser: