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Build a Drag-and-drop file uploader with configurable chunk size

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01

Understand the problem

Build a droppable upload zone that splits files into configurable-size chunks.

ReactDrag and DropUpload
02

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03

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Building a Chunked Drag-and-drop File Uploader in React

Mental model: A drop zone accepts files via drag-drop or a file input. Each file is split into chunks of a configurable size (ceil(size / chunkSize)); you upload them sequentially, advancing a per-file progress bar. Here uploads are simulated with timers

Solution ready — 2 min read

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04

React solution

Complete solutionRun Playground
import React from 'react';
import FileUploader from './src/FileUploader';

export default function App() {
  return (
    <div style={{ fontFamily: 'sans-serif', padding: 20 }}>
      <h1>Chunked Uploader Demo</h1>
      <FileUploader />
    </div>
  );
}
05

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