Free Online Zip File Compression Tool

Compress files or Extract ZIPs instantly in your browser.
No file uploads. 100% Private.

📂

Drag & Drop files here

or click to browse

Selected Files:

Key Features

🔒 100% Secure & Private

We use Client-Side technology. Your files never leave your browser and are never uploaded to any server. Complete data privacy compliant with GDPR.

⚡ Lightning Fast

Since there is no upload or download speed limit involved with a server, the compression happens instantly using your device's processing power.

🌍 No Limits

Compress unlimited files. No daily restrictions, no sign-up required, and completely free to use for users worldwide.

Why Use ZipMaster?

The Best Online Zip & Unzip Tool

ZipMaster provides a seamless way to manage your archive files. Whether you need to bundle multiple documents into a single ZIP file for email attachments or extract content from a downloaded archive, our tool handles it efficiently.

Compatible with All Platforms

Our web-based platform works flawlessly on Windows, Mac, Linux, Android, and iOS. You don't need to install heavy software like WinRAR or 7-Zip. Just open your browser (Chrome, Firefox, Safari, Edge) and start working.

Understanding Compression Algorithms

We utilize the standard Deflate algorithm ensuring high compatibility. Files compressed here can be opened on any operating system without issues.

Frequently Asked Questions

Is it safe to zip files online?

Yes. Unlike other tools, ZipMaster does not send your files to the cloud. All processing happens locally in your web browser (JavaScript), ensuring your sensitive data remains on your device.

What file formats are supported?

Currently, we support creating standard .ZIP files and extracting .ZIP archives. We are working on adding support for .RAR and .7Z in future updates.

Is there a file size limit?

Technically, the limit depends on your browser's memory (RAM). For most modern devices, handling files up to 1GB is smooth. For extremely large files, desktop software might be recommended.