Package Exports

upload-js
upload-js/dist/main.js

This package does not declare an exports field, so the exports above have been automatically detected and optimized by JSPM instead. If any package subpath is missing, it is recommended to post an issue to the original package (upload-js) to support the "exports" field. If that is not possible, create a JSPM override to customize the exports field for this package.

Readme

JavaScript File Upload Library
(With Integrated Cloud Storage)

Get Started — Try on CodePen

Files Hosted on Upload.io: The File Upload Service for Developers.

Installation

Install via NPM:

npm install upload-js

Or via NPM:

yarn add upload-js

Or via a <script> tag:

<script src="https://js.upload.io/upload-js/v1"></script>

Usage

Option 1: `createFileInputHandler` — Try on CodePen

To implement a <input type="file" onchange=... /> handler:

import { Upload } from "upload-js";

// Get production API keys from Upload.io
const upload = new Upload({ apiKey: "free" });

// <input type="file" onchange="onFileSelected(event)" />
const onFileSelected = upload.createFileInputHandler({
  onBegin: ({ cancel }) => {
    console.log("File upload started!");
  },

  onProgress: ({ progress }) => {
    console.log(`File uploading... ${progress}%`);
  },

  onUploaded: ({ fileUrl, fileId }) => {
    console.log(`File uploaded: ${fileUrl}`);
  },

  onError: (error) => {
    console.error(`Error uploading file.`, error);
  }
});

Option 2: `uploadFile` — Try on CodePen

To upload a file DOM object:

import { Upload } from "upload-js";

// Get production API keys from Upload.io
const upload = new Upload({ apiKey: "free" });

// <input type="file" onchange="onFileSelected(event)" />
const onFileSelected = async (event) => {
  const [ file ]    = event.target.files;
  const { fileUrl } = await upload.uploadFile({ file, onProgress });
  console.log(`File uploaded: ${fileUrl}`);
}

const onProgress = ({ progress }) => {
  console.log(`File uploading: ${progress}% complete.`)
}

Full Working Example (Copy & Paste!)

Try on CodePen / Run In Browser:

<html>
  <head>
    <script src="https://js.upload.io/upload-js/v1"></script>
    <script>
      const upload = new Upload({
        // Get production API keys from Upload.io
        apiKey: "free"
      });

      const uploadFile = upload.createFileInputHandler({
        onProgress: ({ progress }) => {
          console.log(`${progress}% complete`)
        },
        onUploaded: ({ fileUrl, fileId }) => {
          alert(`File uploaded!\n${fileUrl}`);
        },
        onError: (error) => {
          alert(`Error!\n${error.message}`);
        }
      });
    </script>
  </head>
  <body>
    <input type="file" onchange="uploadFile(event)" />
  </body>
</html>

Examples with Popular Frameworks

Upload Files with React — Try on CodePen

const { Upload } = require("upload-js");
const upload = new Upload({ apiKey: "free" });

const MyUploadButton = () => {
  const uploadFile = upload.createFileInputHandler({
    onProgress: ({ bytesSent, bytesTotal }) => {
      console.log(`${bytesSent / bytesTotal}% complete`)
    },
    onUploaded: ({ fileUrl, fileId }) => {
      alert(`File uploaded!\n${fileUrl}`);
    },
    onError: (error) => {
      alert(`Error!\n${error.message}`);
    }
  });

  return <input type="file" onChange={uploadFile} />;
};

Upload Files with Angular — Try on CodePen

const { Upload } = require("upload-js");
const upload = new Upload({ apiKey: "free" });
angular
  .module("exampleApp", [])
  .controller("exampleController", $scope => {
    $scope.uploadFile = upload.createFileInputHandler({
      onProgress: ({ bytesSent, bytesTotal }) => {
        console.log(`${bytesSent / bytesTotal}% complete`)
      },
      onUploaded: ({ fileUrl, fileId }) => {
        alert(`File uploaded!\n${fileUrl}`);
      },
      onError: (error) => {
        alert(`Error!\n${error.message}`);
      }
    });
  })
  .directive("onChange", () => ({
    link: (scope, element, attrs) => {
      element.on("change", scope.$eval(attrs.onChange));
    }
  }));

Upload Files with Vue.js — Try on CodePen

const { Upload } = require("upload-js");
const upload = new Upload({ apiKey: "free" });
const uploadFile = upload.createFileInputHandler({
  onProgress: ({ bytesSent, bytesTotal }) => {
    console.log(`${bytesSent / bytesTotal}% complete`)
  },
  onUploaded: ({ fileUrl, fileId }) => {
    alert(`File uploaded!\n${fileUrl}`);
  },
  onError: (error) => {
    alert(`Error!\n${error.message}`);
  }
});
const vueApp = new Vue({
  el: "#example",
  methods: { uploadFile }
});

Upload Files with jQuery — Try on CodePen

<html>
  <head>
    <script src="https://code.jquery.com/jquery-3.6.0.min.js"></script>
    <script src="https://js.upload.io/upload-js/v1"></script>
    <script>
      const upload = new Upload({
        // Get production API keys from Upload.io
        apiKey: "free"
      });

      $(() => {
        $("#file-input").change(
          upload.createFileInputHandler({
            onBegin: () => {
              $("#file-input").hide()
            },
            onProgress: ({ bytesSent, bytesTotal }) => {
              const progress = Math.round(bytesSent / bytesTotal * 100)
              $("#title").html(`File uploading... ${progress}%`)
            },
            onError: (error) => {
              $("#title").html(`Error:<br/><br/>${error.message}`)
            },
            onUploaded: ({ fileUrl, fileId }) => {
              $("#title").html(`
                File uploaded:
                <br/>
                <br/>
                <a href="${fileUrl}" target="_blank">${fileUrl}</a>`
              )
            }
          })
        )
      })
    </script>
  </head>
  <body>
    <h1 id="title">Please select a file...</h1>
    <input type="file" id="file-input" />
  </body>
</html>

Upload Multiple Files with jQuery — Try on CodePen

Please refer to the CodePen example (link above).

Overview of the code:

Instantiate Upload once in your app (at the start).
Call createFileInputHandler once for each file <input> element.
Use onProgress to display the upload progress for each input element.
When onUploaded fires, record the fileUrl from the callback's argument to a local variable.
When onUploaded has fired for all files, the form is ready to be submitted.

Note: file uploads will safely run in parallel, despite using the same Upload instance.

Force File Downloads

By default, the browser will attempt to render uploaded files:

https://upcdn.io/W142hJkHhVSQ5ZQ5bfqvanQ

To force a file to download, add ?download=true to the file's URL:

https://upcdn.io/W142hJkHhVSQ5ZQ5bfqvanQ?download=true

Resize Images

Given an uploaded image URL:

https://upcdn.io/W142hJkHhVSQ5ZQ5bfqvanQ

Resize with:

https://upcdn.io/W142hJkHhVSQ5ZQ5bfqvanQ/thumbnail

Auto-crop with:

https://upcdn.io/W142hJkHhVSQ5ZQ5bfqvanQ/thumbnail-square

Tip: to create more transformations, please register an account.

Crop Images — Try on CodePen

To crop images using manually-provided geometry:

<html>
  <head>
    <script src="https://js.upload.io/upload-js/v1"></script>
    <script>
      const upload = new Upload({
        // Get production API keys from Upload.io
        apiKey: "free"
      });

      // Step 1: Upload the original file.
      const onOriginalImageUploaded = ({ fileId, fileUrl: originalImageUrl }) => {

        // Step 2: Configure crop geometry.
        const crop = {
          // Type Def: https://github.com/upload-io/upload-image-plugin/blob/main/src/types/ParamsFromFile.ts
          input: fileId,
          pipeline: {
            steps: [
              {
                geometry: {
                  // Prompt your user for these dimensions...
                  offset: {
                    x: 20,
                    y: 40
                  },
                  size: {
                    // ...and these too...
                    width: 200,
                    height: 100,
                    type: "widthxheight!"
                  }
                },
                type: "crop"
              }
            ]
          }
        }

        // Step 3: Upload the crop geometry.
        const blob = new Blob([JSON.stringify(crop)], {type: "application/json"});
        upload
          .uploadFile({
            file: {
              name: `${fileId}_cropped.json`, // Can be anything.
              type: blob.type,
              size: blob.size,
              slice: (start, end) => blob.slice(start, end)
            }
          })
          .then(
            ({ fileUrl: cropGeometryUrl }) => {

              // Step 4: Done! Here's the cropped image's URL:
              alert(`Cropped image:\n${cropGeometryUrl}/thumbnail`)

            },
            e => console.error(e)
          );
      };

      const uploadFile = upload.createFileInputHandler({
        onUploaded: onOriginalImageUploaded
      });
    </script>
  </head>
  <body>
    <input type="file" onchange="uploadFile(event)" />
  </body>
</html>

📖 Documentation

See Upload.js Documentation »

🎯 Features

Upload.js is the JavaScript client library for Upload.io: the file upload service for developers.

Core features:

File Storage. (Files stored for 4 hours with the "free" API key.)
File Hosting via CDN. (Files served from 100 locations worldwide.)
Fast Image Transformations. (Resize images, crop images & convert images.)

Available with an account:

Permanent Storage. (The "free" API key provides temporary storage only.)
Unlimited Daily Uploads. (The "free" API key allows 100 uploads per day per IP.)
Extended CDN Coverage. (Files served from 300+ locations worldwide.)
More File Transformations. (Custom image resizing, cropping, converting, etc.)
Upload & Download Authentication. (Supports federated auth via your own JWT authorizer.)
File & Folder Management.
Expiring Links.
Custom CNAME.
Advanced Upload Control:
- Rate Limiting.
- Traffic Limiting.
- File Size Limiting.
- IP Blacklisting.
- File Type Blacklisting.
- And More...

Create an Upload.io account »

See Uploader »

Uploader is a lightweight file upload widget, powered by Upload.js:

Building From Source

Please read: BUILD.md

Contribute

If you would like to contribute to Upload.js:

Add a GitHub Star to the project (if you're feeling generous!).
Determine whether you're raising a bug, feature request or question.
Raise your issue or PR. 🚀

License

MIT

upload-js