Connecting to OmniTools before opening this tool…
Only a temporary connection check is sent. Your files and tool inputs stay in your browser.
How ZIP Archive Creator & Extractor works
The ZIP Archive Creator & Extractor is a client-side archive utility built on JSZip and Web Streams API. The tool enables users to create compressed .ZIP archives from multiple local files and inspect, extract, or selectively download individual files from existing archives directly within the web browser without installing third-party archive software.
Traditional online ZIP utilities require uploading sensitive documents, confidential source code repositories, and personal photos to remote cloud servers. This browser-based manager performs all DEFLATE compression and uncompressed byte decompression locally in device RAM. The parsing engine inspects the ZIP Central Directory record and local file headers ($PK$) to list internal directory hierarchies, compression ratios, and uncompressed byte allocations.
The extractor incorporates security guardrails against malicious archive structures, including Path Traversal attacks (detecting and neutralizing ../ parent directory references) and ZIP Bomb vulnerabilities (enforcing uncompressed expansion ratio limits). All file handling executes in browser memory without uploading archive contents. Extract into a separate folder first when you want to compare downloaded copies with your originals.
How to use ZIP Archive Creator & Extractor
1. Select Mode (Create or Extract)
Choose "Create ZIP Archive" to compress local files or "Extract ZIP Archive" to open and inspect an existing .zip file.
2. Upload Files or Archive
Drag and drop files to compress into a new archive, or upload an existing ZIP archive to inspect its internal directory structure and files.
3. Browse Contents & Compression
Review file names, relative paths, compressed sizes, and space savings ratios in the interactive file table.
4. Download Selected or Full Archive
Download individual extracted files, export all uncompressed files, or download your newly created .ZIP archive in seconds.
Key features and technical specifications
Client-Side DEFLATE Engine
High-efficiency compression and decompression conforming to PKWARE ZIP standards executing entirely within browser memory.
Selective File Extraction
Browse archive directory trees and download specific individual files without needing to extract the entire multi-gigabyte archive.
Path Traversal Protection
Security sanitization engine strips dangerous directory traversal payloads (e.g. ../) to prevent local file system exploitation.
Zero-Upload Privacy Sandbox
Proprietary source code, financial documents, and personal photos are compressed and extracted 100% locally with zero server transfers.
Archive size and extracted size are different
A small ZIP can expand into a much larger collection of files. Check the contents before extracting an unfamiliar archive and consider available device memory. Compression is not encryption: packaging private documents in a ZIP does not by itself restrict who can read them.
Software Developers & DevOps
Inspect and extract specific assets from npm packages, release archives, and build artifacts without launching terminal extractors.
Corporate Employees on Restricted Machines
Create and extract ZIP archives on enterprise-managed Chromebooks and locked-down computers where installing WinRAR or 7-Zip is restricted.
Photographers & Designers
Bundle client photo proofs and design deliverables into compact, organized ZIP packages for client download.
Educators & Students
Package assignment submissions, research datasets, and course materials into single organized archive files.
Frequently asked questions
Is there a limit on the size of ZIP files I can create or extract?
The tool can comfortably process ZIP archives up to several hundred megabytes, constrained only by available browser RAM. Because processing occurs entirely in client memory, there are no artificial bandwidth or timeout limits.
Can I extract single files from a large ZIP archive without downloading everything?
Yes! The file explorer displays all files inside the ZIP with their uncompressed sizes and paths. You can click the download icon next to any specific file to extract and save only that item.
Does this tool support password-protected or encrypted ZIP archives?
Standard PKWARE ZipCrypto and AES-256 encrypted archives require decryption keys. The extractor currently focuses on standard unencrypted ZIP archives conforming to ISO/IEC 21320-1 standards.
Do I need an internet connection, and are my inputs uploaded?
An internet connection is required to open tools and refresh a temporary session. Processing stays on your device; the handshake sends a random challenge, not files or text inputs. Libraries, fonts or models may download. Local processing cannot remove risks from an untrusted device or extension.
What security protections are built into the ZIP extractor?
The extractor automatically sanitizes relative path strings to neutralize "Zip Slip" directory traversal exploits (e.g. ../../../), preventing malicious archives from referencing unauthorized file paths.