UltraTools LogoUltraTools
HomeConverterJSONJWTAbout
UltraTools LogoUltraTools
HomeConverterJSONJWTAbout

Online Zip ViewerOpen, Extract & Preview.

View ZIP, RAR, 7z files instantly.
100% Client-Side. No Uploads.

Advertisement

Frequently Asked Questions

Everything you need to know about the tool.

How does it work?

This tool uses standard web technologies (WebAssembly and Blob slicing) to read archive files directly from your hard drive. Because it doesn't need to upload your file to a cloud server, it's extremely fast and completely private.

Is it safe? Do you upload my files?

Yes, it is 100% safe. Your files are processed entirely in your browser using WebAssembly. No file is ever uploaded to our servers or any third-party.

What formats are supported?

We support the most popular archive formats including ZIP, RAR, and 7z. We also support password-protected archives.

Is there a file size limit?

Technically no, because files are processed locally. You can open files as large as 1GB or more efficiently since we only load the specific parts you need.

Private & Secure

Processing happens 100% in your browser. Files are never uploaded to any server.

Blazing Fast

Powered by WebAssembly for near-native performance. No waiting for uploads.

No Install

Works on any device (Windows, Mac, Chromebook, Mobile) directly in Chrome/Edge/Firefox.

Advertisement

Powered by UltraTools Core, WebAssembly & WebGPU

100% Client-Side Processing • No Data Leaves Your Device