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File: README.md
# jQuery File Upload Plugin ## Demo [Demo File Upload](https://blueimp.github.io/jQuery-File-Upload/) ## 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. ## Setup * [How to setup the plugin on your website](https://github.com/blueimp/jQuery-File-Upload/wiki/Setup) * [How to use only the basic plugin (minimal setup guide).](https://github.com/blueimp/jQuery-File-Upload/wiki/Basic-plugin) ## 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 filemanager 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. ## Requirements ### Mandatory requirements * [jQuery](https://jquery.com/) v. 1.6+ * [jQuery UI widget factory](https://api.jqueryui.com/jQuery.widget/) v. 1.9+ (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) v. 2.5.4+: 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) v. 1.13.0+: Required for the image previews and resizing functionality. * [JavaScript Canvas to Blob polyfill](https://github.com/blueimp/JavaScript-Canvas-to-Blob) v. 2.1.1+:Required for the image previews and resizing functionality. * [blueimp Gallery](https://github.com/blueimp/Gallery) v. 2.15.1+: Used to display the uploaded images in a lightbox. * [Bootstrap](http://getbootstrap.com/) v. 3.2.0+ * [Glyphicons](http://glyphicons.com/) The user interface of all versions except the jQuery UI version is built with [Bootstrap](http://getbootstrap.com/) and icons from [Glyphicons](http://glyphicons.com/). ### 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. ### Custom Backend's You can add support for various backends by adhering to the specification [outlined here](https://github.com/blueimp/jQuery-File-Upload/wiki/JSON-Response). ## 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+ ### Supported features For a detailed overview of the features supported by each browser version, please have a look at the [Extended browser support information](https://github.com/blueimp/jQuery-File-Upload/wiki/Browser-support). ## Contributing **Bug fixes** and **new features** can be proposed using [pull requests](https://github.com/blueimp/jQuery-File-Upload/pulls). Please read the [contribution guidelines](https://github.com/blueimp/jQuery-File-Upload/blob/master/CONTRIBUTING.md) before submitting a pull request. ## 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](http://stackoverflow.com/questions/tagged/blueimp+jquery+file-upload) and tag your question with `blueimp jquery file upload`. ## License Released under the [MIT license](http://www.opensource.org/licenses/MIT).