blueimp-file-upload, dropzone, filepond, fine-uploader, react-dropzone, and uppy are all JavaScript libraries designed to enhance file uploading in web applications. They provide features like drag-and-drop interfaces, progress indicators, file previews, and integration with backend services. While some focus on vanilla JavaScript compatibility, others are built specifically for React or offer plugin-based architectures for extensibility.
JavaScript File Upload Libraries: A Practical Comparison for Frontend Engineers
When your app needs to handle file uploads, you quickly realize that <input type="file"> alone won’t cut it. Users expect drag-and-drop, previews, progress feedback, and sometimes even cloud integrations. The six libraries here — blueimp-file-upload, dropzone, filepond, fine-uploader, react-dropzone, and uppy — each solve this problem differently. Let’s compare them based on real-world engineering concerns.
⚠️ Deprecation Alert: Fine Uploader Is Retired
Before diving in, note that fine-uploader is officially deprecated. Its GitHub repository states: "Fine Uploader is no longer under active development." The last npm release was in 2020. Do not use it in new projects. If you’re maintaining an old implementation, plan a migration to Uppy or FilePond.
🧩 Core Philosophy: What Problem Does Each Solve?
blueimp-file-upload: The jQuery Workhorse
Built as a jQuery plugin, it assumes you’re already in a jQuery ecosystem. It handles everything from basic uploads to advanced scenarios like chunked/resumable transfers and cross-domain requests. It renders its own UI by default but can be used headlessly.
// blueimp-file-upload (jQuery required)
$('#fileupload').fileupload({
url: '/upload',
dataType: 'json',
done: function (e, data) {
console.log('Upload complete:', data.result);
}
});
dropzone: Simple Drag-and-Drop
Zero dependencies, minimal setup. Dropzone automatically turns any element into a drop zone and provides visual feedback. It’s opinionated about UI but lets you override styles and behavior via events.
// dropzone
Dropzone.options.myDropzone = {
url: '/upload',
init: function() {
this.on('success', function(file, response) {
console.log('Uploaded:', response);
});
}
};
// HTML: <form id="myDropzone" class="dropzone"></form>
filepond: UI-First with Plugins
FilePond focuses on a beautiful, accessible user experience. It uses a plugin system — core handles file management, while plugins add image preview, cropping, compression, etc. You compose features as needed.
// filepond
import * as FilePond from 'filepond';
import 'filepond/dist/filepond.min.css';
const pond = FilePond.create(document.querySelector('input'), {
server: '/upload',
onprocessfile: (error, file) => {
if (!error) console.log('Success:', file.serverId);
}
});
react-dropzone: React Hooks, No UI
This library does one thing: manage the drag-and-drop state in React. It returns props you spread onto your own component. You build the entire UI yourself — which gives maximum flexibility but more work.
// react-dropzone
import { useDropzone } from 'react-dropzone';
function MyDropzone() {
const { getRootProps, getInputProps, acceptedFiles } = useDropzone();
return (
<div {...getRootProps()}>
<input {...getInputProps()} />
<p>Drag 'n' drop files here</p>
{acceptedFiles.map(f => <li key={f.name}>{f.name}</li>)}
</div>
);
}
uppy: The Extensible Ecosystem
Uppy treats file uploading as a pipeline. Core handles file management; plugins add UI (Dashboard, DragDrop), destinations (XHR, S3, Tus), and utilities (Thumbnail, Webcam). It’s framework-agnostic but has React/Vue wrappers.
// uppy
import Uppy from '@uppy/core';
import Dashboard from '@uppy/dashboard';
import XHRUpload from '@uppy/xhr-upload';
import '@uppy/core/dist/style.css';
import '@uppy/dashboard/dist/style.css';
const uppy = new Uppy().use(Dashboard, { inline: true, target: '#uppy' })
.use(XHRUpload, { endpoint: '/upload' });
uppy.on('complete', result => {
console.log('Successful files:', result.successful);
});
🖼️ Handling File Previews and Validation
How do these libraries deal with showing users what they’ve selected and enforcing rules?
-
blueimp-file-upload: Shows thumbnails for images by default. Validation is manual viaaddcallback.$('#fileupload').fileupload({ add: function(e, data) { if (data.files[0].size > 5000000) { alert('File too big!'); return false; } data.submit(); } }); -
dropzone: Auto-generates previews. Validation viaacceptedFiles,maxFilesize, etc.Dropzone.options.myDropzone = { maxFilesize: 5, // MB acceptedFiles: 'image/*', previewTemplate: '<div>...</div>' // customize preview }; -
filepond: Rich previews with progress. Validation viaallowFileSizeValidation,allowFileTypeValidation.FilePond.create(input, { maxFileSize: '5MB', acceptedFileTypes: ['image/*'], // Image preview plugin auto-enabled if imported }); -
react-dropzone: No built-in preview. You must renderacceptedFilesyourself.const { acceptedFiles } = useDropzone({ maxSize: 5000000, accept: 'image/*' }); // Then map over acceptedFiles to show names/thumbnails -
uppy: Preview viaThumbnailplugin. Validation in core options.const uppy = new Uppy({ restrictions: { maxFileSize: 5000000, allowedFileTypes: ['image/*'] } }).use(Thumbnail, { target: Dashboard });
🌐 Backend Integration: Chunking, Resumability, and Cloud
For large files or unreliable networks, you need more than a basic POST.
blueimp-file-upload: Supports chunked uploads and resumability viamaxChunkSizeand custom logic.dropzone: Basic chunking viachunking: true, but no built-in resumability.filepond: Chunking via@filepond/plugin-chunk-upload(commercial plugin).react-dropzone: No built-in upload logic — you implement everything withfetchor Axios.uppy: First-class support via@uppy/tusfor resumable uploads, and direct cloud integrations (S3, Google Drive, etc.).
// uppy with Tus for resumable uploads
import Tus from '@uppy/tus';
const uppy = new Uppy().use(Tus, { endpoint: 'https://tusd.tusdemo.net/files/' });
🧪 Framework Compatibility
- Vanilla JS:
blueimp-file-upload(with jQuery),dropzone,filepond, anduppyall work without frameworks. - React:
react-dropzoneis purpose-built for React.uppyandfilepondhave official React components (@uppy/react,react-filepond). - Vue/Svelte: Only
uppyandfilepondoffer official integrations.
🎨 Customization vs. Batteries-Included
- Maximum control:
react-dropzone— you own the UI entirely. - Balanced:
dropzoneandblueimp-file-upload— decent defaults with CSS customization. - Polished out-of-box:
filepondanduppy— ship with production-ready UIs that follow accessibility standards.
💡 When to Use Which?
| Scenario | Recommended Library |
|---|---|
| Legacy jQuery app needing chunked uploads | blueimp-file-upload |
| Simple drag-and-drop with minimal setup | dropzone |
| Beautiful, accessible UI with image editing | filepond |
| Full control over React component design | react-dropzone |
| Complex workflows with cloud sources or resumability | uppy |
| New project requiring long-term maintenance | Avoid fine-uploader |
🔚 Final Thought
These libraries exist on a spectrum from “do-it-yourself” (react-dropzone) to “full-service platform” (uppy). Your choice depends on how much UI you want to build versus how much complexity you need to handle. For most modern applications, Uppy offers the best balance of power, maintainability, and ecosystem support — especially if you anticipate needing cloud integrations or resumable uploads down the line.
- react-dropzone:
Choose
react-dropzoneif you’re building a React application and want a minimal, hook-based solution that gives you full control over the UI. It doesn’t render any DOM elements itself — just provides drop zone logic via hooks. This makes it perfect for custom-designed upload components but requires you to implement previews, progress bars, and error handling manually. - dropzone:
Choose
dropzoneif you want a lightweight, dependency-free library with a clean drag-and-drop UI and sensible defaults. It’s ideal for simple upload scenarios where you don’t need advanced validation, image editing, or complex workflows. Its configuration is straightforward, but extending behavior beyond basic hooks requires manual DOM manipulation. - filepond:
Choose
filepondif you prioritize a polished, accessible UI with built-in image preview, cropping, and file transformation capabilities. It uses a plugin system for features like compression and EXIF rotation, making it highly modular. However, its commercial license for certain plugins may be a constraint for open-source or budget-sensitive projects. - blueimp-file-upload:
Choose
blueimp-file-uploadif you need a mature, jQuery-based solution that works reliably in legacy environments and supports chunked uploads, resumable transfers, and cross-origin requests out of the box. It’s best suited for projects already using jQuery or where minimal dependencies beyond jQuery are acceptable. Avoid it for modern React/Vue apps unless you’re maintaining a legacy codebase. - fine-uploader:
Avoid
fine-uploaderin new projects — it has been officially deprecated since 2020 and is no longer maintained. While it once offered robust features like chunking, retry logic, and S3 direct uploads, lack of updates poses security and compatibility risks. Migrate existing implementations to alternatives like Uppy or FilePond. - uppy:
Choose
uppyif you need a modern, extensible, and framework-agnostic uploader with strong support for cloud destinations (Google Drive, Dropbox, Instagram), real-time collaboration, and accessibility. Its plugin architecture allows fine-grained control over UI and functionality, and it integrates well with React, Vue, and vanilla JS. Best for complex upload workflows requiring third-party integrations or resumable uploads.
react-dropzone
Simple React hook to create a HTML5-compliant drag'n'drop zone for files.
Documentation and examples at https://react-dropzone.js.org. Source code at https://github.com/react-dropzone/react-dropzone/.
Installation
Install it from npm and include it in your React build process (using Webpack, Browserify, etc).
npm install --save react-dropzone
or:
yarn add react-dropzone
Usage
You can either use the hook:
import React, {useCallback} from 'react'
import {useDropzone} from 'react-dropzone'
function MyDropzone() {
const onDrop = useCallback(acceptedFiles => {
// Do something with the files
}, [])
const {getRootProps, getInputProps, isDragActive} = useDropzone({onDrop})
return (
<div {...getRootProps()}>
<input {...getInputProps()} />
{
isDragActive ?
<p>Drop the files here ...</p> :
<p>Drag 'n' drop some files here, or click to select files</p>
}
</div>
)
}
Or the wrapper component for the hook:
import React from 'react'
import Dropzone from 'react-dropzone'
<Dropzone onDrop={acceptedFiles => console.log(acceptedFiles)}>
{({getRootProps, getInputProps}) => (
<section>
<div {...getRootProps()}>
<input {...getInputProps()} />
<p>Drag 'n' drop some files here, or click to select files</p>
</div>
</section>
)}
</Dropzone>
If you want to access file contents you have to use the FileReader API:
import React, {useCallback} from 'react'
import {useDropzone} from 'react-dropzone'
function MyDropzone() {
const onDrop = useCallback((acceptedFiles) => {
acceptedFiles.forEach((file) => {
const reader = new FileReader()
reader.onabort = () => console.log('file reading was aborted')
reader.onerror = () => console.log('file reading has failed')
reader.onload = () => {
// Do whatever you want with the file contents
const binaryStr = reader.result
console.log(binaryStr)
}
reader.readAsArrayBuffer(file)
})
}, [])
const {getRootProps, getInputProps} = useDropzone({onDrop})
return (
<div {...getRootProps()}>
<input {...getInputProps()} />
<p>Drag 'n' drop some files here, or click to select files</p>
</div>
)
}
Dropzone Props Getters
The dropzone property getters are just two functions that return objects with properties which you need to use to create the drag 'n' drop zone.
The root properties can be applied to whatever element you want, whereas the input properties must be applied to an <input>:
import React from 'react'
import {useDropzone} from 'react-dropzone'
function MyDropzone() {
const {getRootProps, getInputProps} = useDropzone()
return (
<div {...getRootProps()}>
<input {...getInputProps()} />
<p>Drag 'n' drop some files here, or click to select files</p>
</div>
)
}
Note that whatever other props you want to add to the element where the props from getRootProps() are set, you should always pass them through that function rather than applying them on the element itself.
This is in order to avoid your props being overridden (or overriding the props returned by getRootProps()):
<div
{...getRootProps({
onClick: event => console.log(event),
role: 'button',
'aria-label': 'drag and drop area',
...
})}
/>
In the example above, the provided {onClick} handler will be invoked before the internal one, therefore, internal callbacks can be prevented by simply using stopPropagation.
See Events for more examples.
Important: if you omit rendering an <input> and/or binding the props from getInputProps(), opening a file dialog will not be possible.
Refs
Both getRootProps and getInputProps accept a custom refKey (defaults to ref) as one of the attributes passed down in the parameter.
This can be useful when the element you're trying to apply the props from either one of those fns does not expose a reference to the element, e.g:
import React from 'react'
import {useDropzone} from 'react-dropzone'
// NOTE: After v4.0.0, styled components exposes a ref using forwardRef,
// therefore, no need for using innerRef as refKey
import styled from 'styled-components'
const StyledDiv = styled.div`
// Some styling here
`
function Example() {
const {getRootProps, getInputProps} = useDropzone()
<StyledDiv {...getRootProps({ refKey: 'innerRef' })}>
<input {...getInputProps()} />
<p>Drag 'n' drop some files here, or click to select files</p>
</StyledDiv>
}
If you're working with Material UI v4 and would like to apply the root props on some component that does not expose a ref, use RootRef:
import React from 'react'
import {useDropzone} from 'react-dropzone'
import RootRef from '@material-ui/core/RootRef'
function PaperDropzone() {
const {getRootProps, getInputProps} = useDropzone()
const {ref, ...rootProps} = getRootProps()
<RootRef rootRef={ref}>
<Paper {...rootProps}>
<input {...getInputProps()} />
<p>Drag 'n' drop some files here, or click to select files</p>
</Paper>
</RootRef>
}
IMPORTANT: do not set the ref prop on the elements where getRootProps()/getInputProps() props are set, instead, get the refs from the hook itself:
import React from 'react'
import {useDropzone} from 'react-dropzone'
function Refs() {
const {
getRootProps,
getInputProps,
rootRef, // Ref to the `<div>`
inputRef // Ref to the `<input>`
} = useDropzone()
<div {...getRootProps()}>
<input {...getInputProps()} />
<p>Drag 'n' drop some files here, or click to select files</p>
</div>
}
If you're using the <Dropzone> component, though, you can set the ref prop on the component itself which will expose the {open} prop that can be used to open the file dialog programmatically:
import React, {createRef} from 'react'
import Dropzone from 'react-dropzone'
const dropzoneRef = createRef()
<Dropzone ref={dropzoneRef}>
{({getRootProps, getInputProps}) => (
<div {...getRootProps()}>
<input {...getInputProps()} />
<p>Drag 'n' drop some files here, or click to select files</p>
</div>
)}
</Dropzone>
dropzoneRef.open()
Testing
react-dropzone makes some of its drag 'n' drop callbacks asynchronous to enable promise based getFilesFromEvent() functions. In order to test components that use this library, you need to use the react-testing-library:
import React from 'react'
import Dropzone from 'react-dropzone'
import {act, fireEvent, render} from '@testing-library/react'
test('invoke onDragEnter when dragenter event occurs', async () => {
const file = new File([
JSON.stringify({ping: true})
], 'ping.json', { type: 'application/json' })
const data = mockData([file])
const onDragEnter = jest.fn()
const ui = (
<Dropzone onDragEnter={onDragEnter}>
{({ getRootProps, getInputProps }) => (
<div {...getRootProps()}>
<input {...getInputProps()} />
</div>
)}
</Dropzone>
)
const { container } = render(ui)
await act(
() => fireEvent.dragEnter(
container.querySelector('div'),
data,
)
);
expect(onDragEnter).toHaveBeenCalled()
})
function mockData(files) {
return {
dataTransfer: {
files,
items: files.map(file => ({
kind: 'file',
type: file.type,
getAsFile: () => file
})),
types: ['Files']
}
}
}
NOTE: using Enzyme for testing is not supported at the moment, see #2011.
More examples for this can be found in react-dropzone's own test suites.
Caveats
Required React Version
React 16.8 or above is required because we use hooks (the lib itself is a hook).
File Paths
Files returned by the hook or passed as arg to the onDrop cb won't have the properties path or fullPath.
For more inf check this SO question and this issue.
Not a File Uploader
This lib is not a file uploader; as such, it does not process files or provide any way to make HTTP requests to some server; if you're looking for that, checkout filepond or uppy.io.
Using <label> as Root
If you use <label> as the root element, the file dialog will be opened twice; see #1107 why. To avoid this, use noClick:
import React, {useCallback} from 'react'
import {useDropzone} from 'react-dropzone'
function MyDropzone() {
const {getRootProps, getInputProps} = useDropzone({noClick: true})
return (
<label {...getRootProps()}>
<input {...getInputProps()} />
</label>
)
}
Using open() on Click
If you bind a click event on an inner element and use open(), it will trigger a click on the root element too, resulting in the file dialog opening twice. To prevent this, use the noClick on the root:
import React, {useCallback} from 'react'
import {useDropzone} from 'react-dropzone'
function MyDropzone() {
const {getRootProps, getInputProps, open} = useDropzone({noClick: true})
return (
<div {...getRootProps()}>
<input {...getInputProps()} />
<button type="button" onClick={open}>
Open
</button>
</div>
)
}
File Dialog Cancel Callback
The onFileDialogCancel() cb is unstable in most browsers, meaning, there's a good chance of it being triggered even though you have selected files.
We rely on using a timeout of 300ms after the window is focused (the window onfocus event is triggered when the file select dialog is closed) to check if any files were selected and trigger onFileDialogCancel if none were selected.
As one can imagine, this doesn't really work if there's a lot of files or large files as by the time we trigger the check, the browser is still processing the files and no onchange events are triggered yet on the input. Check #1031 for more info.
Fortunately, there's the File System Access API, which is currently a working draft and some browsers support it (see browser compatibility), that provides a reliable way to prompt the user for file selection and capture cancellation.
Also keep in mind that the FS access API can only be used in secure contexts.
NOTE You can enable using the FS access API with the useFsAccessApi property: useDropzone({useFsAccessApi: true}).
File System Access API
When setting useFsAccessApi to true, you're switching to the File System API (see the file system access RFC).
What this essentially does is that it will use the showOpenFilePicker method to open the file picker window so that the user can select files.
In contrast, the traditional way (when the useFsAccessApi is not set to true or not specified) uses an <input type="file"> (see docs) on which a click event is triggered.
With the use of the file system access API enabled, there's a couple of caveats to keep in mind:
- The users will not be able to select directories
- It requires the app to run in a secure context
- In Electron, the path may not be set (see #1249)
Supported Browsers
We use browserslist config to state the browser support for this lib, so check it out on browserslist.dev.
Need image editing?
React Dropzone integrates perfectly with Pintura Image Editor, creating a modern image editing experience. Pintura supports crop aspect ratios, resizing, rotating, cropping, annotating, filtering, and much more.
Checkout the Pintura integration example.
Support
Backers
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Hosting
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Contribute
Checkout the organization CONTRIBUTING.md.
License
MIT