dropzone/dropzone
Dropzone
Dropzone is a JavaScript file upload library that provides a browser-based interface for capturing dropped files and transmitting them to a server. It functions as a multipart upload client, splitting large files into smaller chunks to increase transmission reliability and bypass server size limits.
The library includes a client-side image processor capable of resizing images and correcting photo orientation in the browser before they are sent to a server. It generates image thumbnails and visual previews immediately after selection, and can render previews for files already hosted on a server.
The system manages the upload lifecycle through an event-driven pipeline, featuring real-time progress tracking and binary body formats for data transmission. Users can modify the interface appearance through visual theme customization and integrate the library with external listeners using custom browser-native event triggers.
Features
- Drag and Drop Utilities - Captures files dropped onto target elements using standard HTML5 drag-and-drop events to initiate uploads.
- Chunked Uploaders - Implements a mechanism to split large files into smaller segments during transmission to improve reliability and bypass server limits.
- Multipart Transfer Utilities - Uploads large files by splitting them into smaller chunks to improve reliability and bypass server size limits.
- Multipart Upload Utilities - Implements chunked file splitting to ensure the reliable transmission of large files and bypass server-side size limits.
- Upload Progress Tracking - Displays real-time progress bars and status updates to users while files are being transmitted.
- Drag and Drop Libraries - Captures files dragged into designated elements and transmits them to a server.
- File Uploaders - Offers a complete library for managing file selection and transfer through drag-and-drop and standard input methods.
- Client-Side Media Processors - Implements client-side image resizing and orientation correction to optimize files before they are transmitted to the server.
- Multipart Upload Utilities - Provides utilities for attaching files and data streams to HTTP requests using binary body formats for server transmission.
- File Preview Renderers - Generates visual representations of files by injecting thumbnail elements into the document DOM.
- Upload Lifecycle Callbacks - Provides event hooks that trigger at specific stages of the file upload process for custom behavior and UI updates.
- Image Previewers - Displays thumbnails and visual representations of images immediately after they are selected for upload.
- Client-Side - Adjusts image dimensions and quality in the browser to reduce bandwidth and storage usage before upload.
- File Previewers - Generates visual representations of selected files before or during the upload process.
- Image Thumbnails - Generates and displays image thumbnails immediately after selection for upload.
- Client-Side Media Processing - Uses the browser canvas to resize and rotate images locally before they are transmitted to the server.
