Unzip Files

Open a ZIP and pull out what you need.

Unzip Files reads a ZIP archive in your browser, lists everything inside with sizes and dates, and lets you preview or extract individual files — no need to download the whole thing. Decompression uses the native DecompressionStream, and the archive is never uploaded anywhere.

This tool needs JavaScript, because the work happens on your device rather than on a server. Everything below — how it works, the FAQ and the related tools — is readable without it.

Loading Unzip Files…

Runs entirely on your device. No file or text you enter here is uploaded. How to verify it.

How to use Unzip Files

Drop a .zip file.
Browse the file listing with sizes and dates.
Extract one file, several, or all of them.

Questions about Unzip Files

Which compression methods are supported?

Store (no compression) and Deflate, which together cover essentially every ZIP in circulation. The rarer methods — bzip2, LZMA, Zstandard — are not supported by the browser primitives and are reported clearly rather than failing silently.

Can it open a password-protected ZIP?

Not currently. Legacy ZipCrypto and AES entries are detected and named as such so you know why, rather than producing corrupt output.

Is it safe to open an archive from someone I do not know?

Listing and extracting are safe here — nothing is executed, and path traversal entries like ../ are rejected rather than written. What you then do with an extracted executable is a separate question.

Can I open a ZIP on an iPhone or iPad?

Yes. It runs in mobile Safari and Chrome, and extracted files land in your usual downloads location. The Files app can already unpack a whole archive on iOS, so this page is most useful when you want to read the listing first and pull out one file.

How large an archive can it handle?

Listing stays cheap even for very large archives, because only the central directory is read. Extraction is bounded by device memory instead — a few hundred megabytes is comfortable on a desktop, and rather less on an older phone.

Is Unzip Files really free, with no limits?

Yes. There is no account, no daily cap, no file-size tier and no watermark, because there is no server cost to recover. The site is funded by clearly disclosed partner recommendations on the Partners page, never by metering the tools.

Are my files or text uploaded when I use Unzip Files?

No. Everything is processed by JavaScript running in your browser, on your device. You can verify it: open your browser's developer tools, switch to the Network tab, and use the tool. You will see no request carrying your data — because there is nowhere for it to go.