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React File Upload UI Widget β€” Lightweight & supports: drag and drop, multiple uploads, image cropping, customization & more πŸš€ Comes with Cloud Storage 🌐





Install via NPM:

npm install react-uploader

Or via YARN:

yarn add react-uploader

Or via a <script> tag:

<script src=""></script>


UploadButton β€” Try on CodePen

The UploadButton component uses a render prop to provide an onClick callback to your button element.

When clicked, a file upload modal will appear:

import { Uploader } from "uploader"; // Installed by "react-uploader".
import { UploadButton } from "react-uploader";

// Initialize once (at the start of your app).
const uploader = Uploader({
  apiKey: "free" // Get production API keys from Bytescale

// Configuration options:
const options = { multi: true };

const MyApp = () => (
  <UploadButton uploader={uploader}
                onComplete={files => alert( => x.fileUrl).join("\n"))}>
    {({onClick}) =>
      <button onClick={onClick}>
        Upload a file...

Required props:

  • uploader
  • children

Optional props:

  • options
  • onComplete

UploadDropzone β€” Try on CodePen

The UploadDropzone component renders an inline drag-and-drop file upload dropzone:

import { Uploader } from "uploader"; // Installed by "react-uploader".
import { UploadDropzone } from "react-uploader";

// Initialize once (at the start of your app).
const uploader = Uploader({
  apiKey: "free" // Get production API keys from Bytescale

// Configuration options:
const options = { multi: true };

const MyApp = () => (
  <UploadDropzone uploader={uploader}
                  onUpdate={files => alert( => x.fileUrl).join("\n"))}
                  height="375px" />

Required props:

  • uploader

Optional props:

  • options
  • onUpdate
  • width
  • height

The Result

The callbacks receive a Array<UploadWidgetResult>:

  fileUrl: "",   // URL to use when serving this file.
  filePath: "/uploads/example.jpg",      // File path (we recommend saving this to your database).

  editedFile: undefined,                 // Edited file (for image crops). Same structure as below.

  originalFile: {
    fileUrl: "", // Uploaded file URL.
    filePath: "/uploads/example.jpg",    // Uploaded file path (relative to your raw file directory).
    accountId: "FW251aX",                // Bytescale account the file was uploaded to.
    originalFileName: "example.jpg",     // Original file name from the user's machine.
    file: { ... },                       // Original DOM file object from the <input> element.
    size: 12345,                         // File size in bytes.
    lastModified: 1663410542397,         // Epoch timestamp of when the file was uploaded or updated.
    mime: "image/jpeg",                  // File MIME type.
    metadata: {
      ...                                // User-provided JSON object.
    tags: [
      "tag1",                            // User-provided & auto-generated tags.

🌐 API Support

🌐 File Management API

Bytescale provides an Upload API, which supports the following:

  • File uploading.
  • File listing.
  • File deleting.
  • And more...

Uploading a "Hello World" text file is as simple as:

curl --data "Hello World" \
     -u apikey:free \
     -X POST ""

Note: Remember to set -H "Content-Type: mime/type" when uploading other file types!

Read the Upload API docs Β»

🌐 Image Processing API (Resize, Crop, etc.)

Bytescale also provides an Image Processing API, which supports the following:

Read the Image Processing API docs Β»

Original Image

Here's an example using a photo of Chicago:

Processed Image

Using the Image Processing API, you can produce this image:

Full Documentation

Uploader Documentation Β»

Need a Headless (no UI) File Upload Library?

Try Upload.js Β»

Can I use my own storage?

Yes: Bytescale supports AWS S3, Cloudflare R2, Google Storage, and DigitalOcean Spaces.

To configure a custom storage backend, please see:

πŸ‘‹ Create your Bytescale Account

React Uploader is the React Upload Widget for Bytescale: the best way to serve images, videos, and audio for web apps.

Create a Bytescale account Β»

Building From Source