Drop files here or click to select
Create and extract ZIP archives entirely in your browser without installing any software. This tool runs 100% client-side using JavaScript, which means your files are never uploaded to a server. Bundle multiple files into a single compressed ZIP archive for easy sharing, or extract the contents of an existing ZIP file to download individual files. It is fast, private, and works on any device with a modern browser.
ZIP is one of the most widely used archive file formats in computing, originally created by Phil Katz in 1989. A ZIP file bundles one or more files together into a single container while optionally compressing them to reduce overall size. The format is natively supported by Windows, macOS, and Linux, making it the universal choice for sharing collections of files via email, cloud storage, or file transfer services.
Each file inside a ZIP archive is compressed independently, which means you can extract a single file without needing to decompress the entire archive. ZIP files also store metadata such as original file names, directory structure, timestamps, and file permissions. This makes ZIP ideal for preserving the organization of complex folder structures during transfer.
The default compression algorithm used in ZIP files is DEFLATE, a combination of LZ77 and Huffman coding. DEFLATE works by finding repeated sequences of data within a file and replacing them with shorter references, then further encoding the result using variable-length codes that assign shorter bit patterns to more frequent symbols. This approach is lossless, meaning the original data is perfectly reconstructed when the file is extracted.
DEFLATE compression levels range from 1 (fastest, least compression) to 9 (slowest, most compression). Our tool uses level 6, which provides an excellent balance between compression ratio and speed. Text-based files like CSV, JSON, XML, HTML, and source code typically compress by 60-80%, while files that are already compressed (such as JPEG images, MP4 videos, or other ZIP archives) see little to no additional size reduction since their data has already been optimized.
ZIP files are used across virtually every industry and workflow. Developers use them to package source code, libraries, and build artifacts. Designers bundle project assets like fonts, images, and templates into ZIP files for delivery to clients. Businesses rely on ZIP archives to email multiple documents, such as invoices, contracts, and reports, as a single attachment. When migrating websites or transferring backups, ZIP compression reduces transfer times and storage costs. For anyone who regularly works with multiple files, creating ZIP archives is one of the simplest ways to stay organized and reduce file sizes for faster transfers.