Zip Files
Create a .zip archive from any files online for free, right in your browser. No uploads, no file size limits from a server, completely private.
About This Tool
Bundle any number of files, of any type, into a single .zip archive. Useful for sending a group of files as one attachment, backing up a folder's worth of documents, or packaging assets for delivery. Drop in as many files as you need; the order they're added is the order they appear in the archive. Everything happens in your browser, so even large batches never touch a server.
How To Use
- Drop your files into the upload zone or click to select them from your device.
- Add as many files as you need, of any type.
- Click "Create ZIP" and your archive is built in your browser.
- Download the resulting .zip file.
How It Works
Each file you add is written into a new ZIP container as its own entry, preserving its original filename and bytes exactly. The ZIP format is a well-established, open container format, readable by every operating system and virtually every archive tool, so the file you download will open cleanly anywhere.
Compression uses the browser's native DEFLATE implementation (the same algorithm used by most ZIP tools), applied to each file individually. Files that are already compressed, like JPEGs or existing ZIPs, typically don't shrink much further, while text-based files (documents, code, logs) usually compress well.
The archive is assembled entirely inside a Web Worker on your device. Nothing is uploaded at any point, not even temporarily, and the finished .zip is handed straight to your browser's download mechanism.
Frequently Asked Questions
Is there a limit on how many files I can zip?
You can add up to 100 files in a single archive. There is no strict total size limit beyond your browser's available memory, though very large batches may take a few moments to process.
Does zipping reduce file size?
It depends on the content. Text, documents, and uncompressed formats often shrink noticeably. Already-compressed formats like JPEG, MP4, or existing ZIP files usually stay about the same size.
Can I password protect the zip I create?
Not with this tool. Use our Password Protect ZIP tool instead, which creates an AES-256 encrypted archive from your files.
Will folder structure be preserved?
Each file is added as a flat entry using its own filename. If you need to preserve folder structure from your device, that depends on how your browser reports file paths during selection.
Are my files uploaded to a server?
No. The archive is created entirely in your browser. Your files never leave your device at any point.