Open ZIP files without uploading them.
Extract, create, check, and understand archive files with tools that run locally in your browser.
Browser-only archive tools
Built for private documents, downloads, backups, source packages, and everyday ZIP workflows.
Private ZIP Extractor
Open and inspect ZIP files locally in your browser without uploading them.
ToolCreate ZIP File
Build a ZIP archive from local files and download it from your browser.
ToolZIP File Checker
Inspect ZIP signatures and common structure problems before you extract.
ToolCompression Calculator
Estimate likely file size reduction before compressing files.
ToolArchive Extension Checker
Identify archive and package file extensions in plain English.
ToolFile Hash Checker
Calculate SHA-256 fingerprints locally to verify downloads without uploading files.
ToolArchive Size Converter
Convert KB, MB, GB, and TB file sizes and estimate transfer/storage needs.
ToolZIP Safety Checklist
Run through a local checklist before opening archives from email, forums, or unknown sources.
ToolFile Signature Checker
Read the first bytes of a file locally and compare them with common archive signatures.
ToolArchive Manifest Generator
Create a local CSV/JSON manifest of selected files before packaging or sharing an archive.
ToolSplit Archive Planner
Estimate how many archive parts you need for email, upload, or storage size limits.
ToolZIP Bomb Risk Checker
Inspect ZIP compression ratios locally and flag suspiciously expanded entries.
Most online ZIP tools ask for your files. This one avoids that by design.
Archives often contain invoices, IDs, contracts, photos, backups, code, exports, and business records. ZipFile.org is designed around local processing so you can inspect files before trusting any upload-based service.
✓ File picker works locally
✓ ZIP structure check runs in the browser
✓ No account, database, or upload endpoint
✓ Static hosting friendly
Open common archive files
Open ZIP File Online Privately
Open and inspect a ZIP file in your browser without uploading it to a server.
Open fileOpen RAR File Safely
Learn how RAR archives work, why split RAR parts fail, and safer local options.
Open fileOpen 7z File Safely
Understand 7z archives, browser limitations, and when to use trusted local software.
Open fileOpen TAR.GZ File
Understand the two-layer TAR.GZ format and how extraction works.
Open fileOpen GZ File
Identify Gzip files and understand when they contain a TAR package.
Open fileOpen ISO File Safely
Learn what ISO disk images are and why they are different from normal ZIP archives.
Archive extension database
Plain-English explanations for ZIP, RAR, 7z, TAR.GZ, disk images, software packages, and ZIP-based document formats.
.zip
The standard compressed archive format used for packaging files and folders.
Archive + compression.rar
A proprietary archive format often used for multi-part downloads and high compression.
Archive + compression.7z
A high-compression archive format created by 7-Zip.
Package/archive.tar
A Unix-style package that bundles files but does not compress them by itself.
Package + compression.tar.gz
A TAR archive compressed with Gzip, common in Linux and open-source downloads.
Package + compression.tgz
A shorter filename form of TAR.GZ used for compressed TAR archives.
Compression stream.gz
A single-file Gzip compressed stream, often used with TAR.
Compression stream.bz2
A Bzip2 compressed file, often seen in Unix and Linux archives.
Compression stream.xz
A high-ratio compression stream commonly used for Linux packages.
Compression stream.zst
A Zstandard compressed file known for fast compression and decompression.
Archive + compression.zipx
An extended ZIP format that can use newer compression methods.
Disk image.iso
A disk image that stores the contents of an optical disc or bootable installer.
Archive.cab
A Microsoft cabinet archive used by Windows installers and updates.
Installer package.msi
A Windows Installer package that may contain cabinet-style installation data.
Disk image.dmg
A macOS disk image used to distribute applications and installers.
Installer package.pkg
An installer package used by macOS and other systems.
ZIP troubleshooting guides
ZIP file is corrupted: what it means and what to check
Learn why a ZIP file may be unreadable, how to check its structure locally, and what safe next steps you can take.
GuideCannot open ZIP file: safe troubleshooting checklist
A practical checklist for ZIP files that fail to open on Windows, macOS, Chromebook, Android, or iPhone.
GuideInvalid ZIP file error explained
Why an archive can look like a ZIP but fail validation, and how to check it safely.
GuideWindows cannot open the folder: ZIP error explained
Understand the common Windows ZIP error and how to verify whether the file is incomplete or unsupported.
GuideUnexpected end of archive: causes and fixes
This error usually means the archive is incomplete, truncated, or missing a split part.
GuideZIP file is empty but has size
Why a ZIP file can appear empty even when the file size is not zero.
Choose the right archive format
Useful comparison pages for ZIP, RAR, 7z, TAR.GZ, encryption, split archives, browser tools, and desktop apps.
ZIP vs RAR vs 7z: which archive format should you use?
Compare compatibility, compression ratio, speed, password support, and everyday sharing use cases for ZIP, RAR, and 7z.
CompareZIP vs RAR for sharing files
ZIP is usually easier for recipients, while RAR can be useful for split archives and high compression in some workflows.
CompareZIP vs 7z for backups
7z can compress strongly, but ZIP remains easier to open across operating systems and browsers.
CompareTAR.GZ vs TAR.XZ
Both are Unix-style archive stacks, but Gzip focuses on speed while XZ usually targets stronger compression.
CompareZIP vs TAR.GZ for source code
ZIP is common for Windows-friendly sharing, while TAR.GZ is common for Unix and open-source releases.
CompareZipCrypto vs AES ZIP encryption
Legacy ZipCrypto is widely compatible but weaker; AES ZIP encryption is stronger but not supported by every extractor.
Open archives with less risk
How to unzip files safely
A practical privacy-first checklist for opening ZIP, RAR, 7z, and TAR archives from downloads, email, or unknown senders.
SafetyWhat does no-upload file processing mean?
Understand how browser-local file tools work and why they can be safer for private documents.
SafetyArchive malware warning signs
Learn the red flags before opening ZIP files that contain executables, scripts, shortcuts, or suspicious nested archives.
SafetyHow to handle private document archives
Privacy tips for archives containing IDs, contracts, tax forms, family records, invoices, backups, or client work.