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# jQuery File Upload
## Contents
- [Description](#description)
- [Demo](#demo)
- [Features](#features)
- [Security](#security)
- [Setup](#setup)
- [Requirements](#requirements)
- [Mandatory requirements](#mandatory-requirements)
- [Optional requirements](#optional-requirements)
- [Cross-domain requirements](#cross-domain-requirements)
- [Browsers](#browsers)
- [Desktop browsers](#desktop-browsers)
- [Mobile browsers](#mobile-browsers)
- [Extended browser support information](#extended-browser-support-information)
- [Testing](#testing)
- [Support](#support)
- [License](#license)
## Description
> File Upload widget with multiple file selection, drag&drop support,
> progress bars, validation and preview images, audio and video for jQuery.
> Supports cross-domain, chunked and resumable file uploads and client-side
> image resizing.
> Works with any server-side platform (PHP, Python, Ruby on Rails, Java,
> Node.js, Go etc.) that supports standard HTML form file uploads.
## Demo
[Demo File Upload](https://blueimp.github.io/jQuery-File-Upload/)
## Features
- **Multiple file upload:**
Allows to select multiple files at once and upload them simultaneously.
- **Drag & Drop support:**
Allows to upload files by dragging them from your desktop or file manager and
dropping them on your browser window.
- **Upload progress bar:**
Shows a progress bar indicating the upload progress for individual files and
for all uploads combined.
- **Cancelable uploads:**
Individual file uploads can be canceled to stop the upload progress.
- **Resumable uploads:**
Aborted uploads can be resumed with browsers supporting the Blob API.
- **Chunked uploads:**
Large files can be uploaded in smaller chunks with browsers supporting the
Blob API.
- **Client-side image resizing:**
Images can be automatically resized on client-side with browsers supporting
the required JS APIs.
- **Preview images, audio and video:**
A preview of image, audio and video files can be displayed before uploading
with browsers supporting the required APIs.
- **No browser plugins (e.g. Adobe Flash) required:**
The implementation is based on open standards like HTML5 and JavaScript and
requires no additional browser plugins.
- **Graceful fallback for legacy browsers:**
Uploads files via XMLHttpRequests if supported and uses iframes as fallback
for legacy browsers.
- **HTML file upload form fallback:**
Allows progressive enhancement by using a standard HTML file upload form as
widget element.
- **Cross-site file uploads:**
Supports uploading files to a different domain with cross-site XMLHttpRequests
or iframe redirects.
- **Multiple plugin instances:**
Allows to use multiple plugin instances on the same webpage.
- **Customizable and extensible:**
Provides an API to set individual options and define callback methods for
various upload events.
- **Multipart and file contents stream uploads:**
Files can be uploaded as standard "multipart/form-data" or file contents
stream (HTTP PUT file upload).
- **Compatible with any server-side application platform:**
Works with any server-side platform (PHP, Python, Ruby on Rails, Java,
Node.js, Go etc.) that supports standard HTML form file uploads.
## Security
⚠️ Please read the [VULNERABILITIES](VULNERABILITIES.md) document for a list of
fixed vulnerabilities
Please also read the [SECURITY](SECURITY.md) document for instructions on how to
securely configure your Webserver for file uploads.
## Setup
jQuery File Upload can be installed via [NPM](https://www.npmjs.com/):
```sh
npm install blueimp-file-upload
```
This allows you to include [jquery.fileupload.js](js/jquery.fileupload.js) and
its extensions via `node_modules`, e.g:
```html
<script src="node_modules/blueimp-file-upload/js/jquery.fileupload.js"></script>
```
The widget can then be initialized on a file upload form the following way:
```js
$('#fileupload').fileupload();
```
For further information, please refer to the following guides:
- [Main documentation page](https://github.com/blueimp/jQuery-File-Upload/wiki)
- [List of all available Options](https://github.com/blueimp/jQuery-File-Upload/wiki/Options)
- [The plugin API](https://github.com/blueimp/jQuery-File-Upload/wiki/API)
- [How to setup the plugin on your website](https://github.com/blueimp/jQuery-File-Upload/wiki/Setup)
- [How to use only the basic plugin.](https://github.com/blueimp/jQuery-File-Upload/wiki/Basic-plugin)
## Requirements
### Mandatory requirements
- [jQuery](https://jquery.com/) v1.7+
- [jQuery UI widget factory](https://api.jqueryui.com/jQuery.widget/) v1.9+
(included): Required for the basic File Upload plugin, but very lightweight
without any other dependencies from the jQuery UI suite.
- [jQuery Iframe Transport plugin](https://github.com/blueimp/jQuery-File-Upload/blob/master/js/jquery.iframe-transport.js)
(included): Required for
[browsers without XHR file upload support](https://github.com/blueimp/jQuery-File-Upload/wiki/Browser-support).
### Optional requirements
- [JavaScript Templates engine](https://github.com/blueimp/JavaScript-Templates)
v3+: Used to render the selected and uploaded files for the Basic Plus UI and
jQuery UI versions.
- [JavaScript Load Image library](https://github.com/blueimp/JavaScript-Load-Image)
v2+: Required for the image previews and resizing functionality.
- [JavaScript Canvas to Blob polyfill](https://github.com/blueimp/JavaScript-Canvas-to-Blob)
v3+:Required for the image previews and resizing functionality.
- [blueimp Gallery](https://github.com/blueimp/Gallery) v2+: Used to display the
uploaded images in a lightbox.
- [Bootstrap](https://getbootstrap.com/) v3+: Used for the demo design.
- [Glyphicons](https://glyphicons.com/) Icon set used by Bootstrap.
### Cross-domain requirements
[Cross-domain File Uploads](https://github.com/blueimp/jQuery-File-Upload/wiki/Cross-domain-uploads)
using the
[Iframe Transport plugin](https://github.com/blueimp/jQuery-File-Upload/blob/master/js/jquery.iframe-transport.js)
require a redirect back to the origin server to retrieve the upload results. The
[example implementation](https://github.com/blueimp/jQuery-File-Upload/blob/master/js/main.js)
makes use of
[result.html](https://github.com/blueimp/jQuery-File-Upload/blob/master/cors/result.html)
as a static redirect page for the origin server.
The repository also includes the
[jQuery XDomainRequest Transport plugin](https://github.com/blueimp/jQuery-File-Upload/blob/master/js/cors/jquery.xdr-transport.js),
which enables limited cross-domain AJAX requests in Microsoft Internet Explorer
8 and 9 (IE 10 supports cross-domain XHR requests).
The XDomainRequest object allows GET and POST requests only and doesn't support
file uploads. It is used on the
[Demo](https://blueimp.github.io/jQuery-File-Upload/) to delete uploaded files
from the cross-domain demo file upload service.
## Browsers
### Desktop browsers
The File Upload plugin is regularly tested with the latest browser versions and
supports the following minimal versions:
- Google Chrome
- Apple Safari 4.0+
- Mozilla Firefox 3.0+
- Opera 11.0+
- Microsoft Internet Explorer 6.0+
### Mobile browsers
The File Upload plugin has been tested with and supports the following mobile
browsers:
- Apple Safari on iOS 6.0+
- Google Chrome on iOS 6.0+
- Google Chrome on Android 4.0+
- Default Browser on Android 2.3+
- Opera Mobile 12.0+
### Extended browser support information
For a detailed overview of the features supported by each browser version and
known operating system / browser bugs, please have a look at the
[Extended browser support information](https://github.com/blueimp/jQuery-File-Upload/wiki/Browser-support).
## Testing
The project comes with three sets of tests:
1. Code linting using [ESLint](https://eslint.org/).
2. Unit tests using [Mocha](https://mochajs.org/).
3. End-to-end tests using [blueimp/wdio](https://github.com/blueimp/wdio).
To run the tests, follow these steps:
1. Start [Docker](https://docs.docker.com/).
2. Install development dependencies:
```sh
npm install
```
3. Run the tests:
```sh
npm test
```
## Support
This project is actively maintained, but there is no official support channel.
If you have a question that another developer might help you with, please post
to
[Stack Overflow](https://stackoverflow.com/questions/tagged/blueimp+jquery+file-upload)
and tag your question with `blueimp jquery file upload`.
## License
Released under the [MIT license](https://opensource.org/licenses/MIT).
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