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bvaughn/react-virtualized

Analysis updated 2026-06-21

★ 27,074JavaScriptAudience · developerComplexity · 2/5Setup · easy

TLDR

React components that keep long lists and large data tables fast by only rendering what's visible on screen, so your app stays smooth even when displaying tens of thousands of rows.

Mindmap

mindmap
  root((react-virtualized))
    What it does
      Renders visible rows only
      Virtualization
      Smooth scrolling
    Tech stack
      JavaScript
      React
    Use cases
      Large data tables
      Long scrollable lists
      Image grids
    Audience
      React developers
      Frontend engineers
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Code map

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filefunction / class

What do people build with it?

USE CASE 1

Add a scrollable list of 10,000 contacts to your React app that loads instantly without lag or jank.

USE CASE 2

Build a data table with thousands of rows in an admin dashboard that stays fast and responsive as users scroll.

USE CASE 3

Display a large grid of images or product cards without slowing down the browser, loading only what the user can see.

USE CASE 4

Replace a slow, full-render table in a reporting screen with a virtualized version that handles any dataset size.

What is it built with?

JavaScriptReact

How does it compare?

bvaughn/react-virtualizedsillytavern/sillytavernajaxorg/ace
Stars27,07427,07027,129
LanguageJavaScriptJavaScriptJavaScript
Setup difficultyeasymoderateeasy
Complexity2/53/52/5
Audiencedevelopervibe coderdeveloper

Figures from each repo's GitHub metadata at analysis time.

How do you get it running?

Difficulty · easy Time to first run · 30min

In plain English

This is a JavaScript toolkit for building web apps that need to display huge amounts of data, think thousands of rows in a table or a long scrollable list, without the page slowing to a crawl. It's aimed at developers building with React (a popular tool for creating user interfaces), and it solves a specific performance problem: normally, if you try to show 10,000 items on screen at once, the browser has to load all of them into memory, which makes everything sluggish. React Virtualized fixes this by only rendering the items actually visible on screen at any given moment, swapping them in and out as you scroll, a technique called virtualization. In practical terms, if you're building something like a data dashboard, an admin panel, a contacts list, or any interface where users scroll through large amounts of information, this library makes that experience feel fast and smooth rather than laggy. It provides ready-made building blocks for scrollable lists, grids (rows and columns of data like a spreadsheet), and tables. You drop these components into your React app and they handle the performance complexity behind the scenes. With over 27,000 stars on GitHub, it's one of the most trusted tools in this space and has been sponsored by major tech companies. If you're using Cursor, Bolt, or Lovable to build a web app that involves displaying lots of records or data, this is the kind of library a developer would reach for to keep it running smoothly.

Copy-paste prompts

Prompt 1
I'm using react-virtualized and need a List component that renders 50,000 user records. Show me the setup code including rowRenderer and how to set row height.
Prompt 2
Help me implement a react-virtualized Table with sortable columns for a dataset of 100,000 rows, including column definitions and custom cell renderers.
Prompt 3
Show me how to use react-virtualized's AutoSizer component so my virtualized list fills the full available height of the browser window automatically.
Prompt 4
I have a react-virtualized Grid showing product cards. How do I update the grid when the underlying data changes so it re-renders correctly without a full remount?
Prompt 5
I'm combining react-virtualized List with infinite scroll. Show me how to use InfiniteLoader to fetch more data as the user approaches the bottom of the list.

Frequently asked questions

What is react-virtualized?

React components that keep long lists and large data tables fast by only rendering what's visible on screen, so your app stays smooth even when displaying tens of thousands of rows.

What language is react-virtualized written in?

Mainly JavaScript. The stack also includes JavaScript, React.

How hard is react-virtualized to set up?

Setup difficulty is rated easy, with roughly 30min to a first successful run.

Who is react-virtualized for?

Mainly developer.

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