ZIP Creator & Extractor
Create ZIP archives from any files or extract existing ZIP archives. Free, browser-based, no server upload.
Drop files to add to ZIP or click to browse
Any file type — multiple files supported
About Archive Converter
ZIP is the most universally supported archive format in the world, compatible with every major operating system without additional software. Whether you need to bundle multiple files into a single attachment, extract the contents of a received archive, or create a compressed backup of your project, the Archive Converter handles it entirely in your browser without ever sending your files to a server.
The tool uses the JSZip library to create and read ZIP archives with full fidelity. When creating an archive, you can add any combination of file types — documents, images, code files, configuration files — and they are compressed and packaged into a single downloadable ZIP. When extracting, you get an interactive file list where you can download individual files without needing to decompress the entire archive.
Privacy is a core design principle here. Many online ZIP tools upload your files to a server for processing, which raises obvious concerns for sensitive code, client documents, or personal files. With boxtool.io, the entire operation runs locally in your browser using JavaScript. Your files never leave your device.
How to Use Archive Converter
- 1To create a ZIP: click "Add Files" and select all the files you want to compress.
- 2Optionally rename the output archive before clicking "Create ZIP".
- 3The compressed archive downloads automatically to your default download folder.
- 4To extract a ZIP: switch to the "Extract" tab and upload the ZIP file you want to open.
- 5Browse the file list and click individual files to download them, or download all at once.
Use Cases
- →Bundle multiple project files into a single ZIP for email or file-sharing attachment
- →Extract individual files from a received ZIP archive without downloading third-party software
- →Compress website assets or configuration files before deployment
- →Create lightweight backups of documents, images, or code projects
- →Package a set of design assets or exports for handoff to a client or developer
- →Combine multiple CSV exports into a single archive for organized data sharing
Tips
- ✓Select multiple files at once using Ctrl+Click (Windows) or Cmd+Click (Mac) in the file picker
- ✓ZIP compression is most effective on text-based files like JSON, CSV, HTML, and source code
- ✓Images and videos are already compressed — their ZIP size will be similar to the original
- ✓Large archives with many files may take a few seconds to process in the browser
- ✓Extract individual files from large archives to avoid downloading everything unnecessarily
- ✓ZIP files created here are fully compatible with Windows Explorer, macOS Finder, and Linux utilities
Frequently Asked Questions
Currently ZIP is supported for both creation and extraction. ZIP is the most universally compatible archive format, supported natively by all major operating systems including Windows, macOS and Linux.
The tool is limited by your browser's available memory. For most computers with 8 GB+ RAM, files up to a few hundred MB work fine. For very large archives (1 GB+), use a desktop archiving tool like 7-Zip or The Unarchiver instead.
You can select individual files from within folders. Direct folder drag-and-drop is not supported because the browser API for reading folder structure is not universal. Each file is added at the root of the ZIP.
No. The ZIP creator does not apply password protection or encryption. For sensitive files, use a desktop tool that supports AES-256 encrypted ZIPs.
The tool uses deflate compression at level 6, which provides a good balance between file size reduction and processing speed. This is the standard level used by most archiving software.
After extracting, each file has a download button visible on hover. Click the individual download icon next to any file to save just that file. The "Download all" button re-zips all extracted files.