Stuk/jszip
Jszip
jsZip is a JavaScript library for creating, reading, editing, and extracting ZIP archives within the browser or Node.js. It functions as an in-memory ZIP compressor and archive manager that generates compressed data streams and blobs from file collections without requiring a local filesystem.
The library provides specific support for the ZIP64 extension, allowing it to handle archives and individual files that exceed the four gigabyte limit. It enables the dynamic modification of existing ZIP files to add, remove, or update internal folder structures and metadata.
The project covers a broad range of archive management capabilities, including file creation, import, and extraction. It manages binary data generation and character encoding for filenames and content.
Features
- Zip Compression Libraries - Provides a complete library for creating, reading, editing, and extracting ZIP archives in both browser and Node.js environments.
- In-Memory File Systems - Maintains an in-memory tree of files and folders to manage archive structure before binary serialization.
- Archive Management - Enables the modification of existing archives, including updating internal folder structures and metadata.
- Archive Importers - Extracts contents and metadata from existing zip files for further processing and retrieval.
- Zip64 Support - Implements the ZIP64 extension to support archives and individual files exceeding the four gigabyte limit.
- Zip64 Implementations - Provides full support for the ZIP64 extension to handle individual files and archives larger than four gigabytes.
- Archive Extraction Utilities - Allows reading and extracting the contents of uploaded zip files entirely on the client side.
- Pluggable Architectures - Decouples archive structure logic from specific compression methods via a pluggable algorithm interface.
- Archive Browsers - Provides programmatic interfaces to add, remove, or update files and folders within existing archives.
- Large File Transfer Optimizers - Manages extremely large files by implementing the Zip64 standard.
- Transfer Bundling - Packages multiple pieces of generated data into a single compressed file for efficient transfer.
- Stream-Based Data Pipelines - Processes archive data in chunks to write large zip files without loading the entire content into memory.
- Lazy Execution Strategies - Implements a deferred execution model that postpones heavy compression work until the final output is requested.
- Binary Data Handling - Utilizes browser-native Blobs and ArrayBuffers to handle the binary output of generated zip archives.
- File Compression - Creation, reading, and editing of ZIP archives.
