ZIP Extract (Decompress / Unzip)

What is ZIP extract?

ZIP stores files and directories as individual archive entries described by a central directory; the format is maintained in PKWARE’s ZIP APPNOTE. This tool lists ZIP and ZIP64 directories and extracts entries stored without compression or compressed with DEFLATE. Password-protected entries encrypted with WinZip AES-128/192/256 or ZipCrypto are supported.

How to use this tool

Open a .zip, inspect entry paths and sizes, then extract selected files or the folder structure. Listing reads the archive directory without asking for a password for normal AES/ZipCrypto archives. Downloading or extracting an encrypted entry prompts for a password. Use ZIP Create for the reverse operation.

Choosing the right format

ZIP can store filenames, directories, timestamps, attributes, and comments, but metadata and filename encodings vary across creators and operating systems. Browser downloads cannot reproduce every permission, link, or platform-specific attribute exactly.

Important limitations

Treat untrusted ZIP files cautiously: entries may use .., absolute paths, duplicate or visually confusing names, huge expansion ratios, or misleading extensions. Review entries and sizes before download. Normal ZIP encryption does not hide filenames. CRC-32 is not proof of authenticity, and large or suspicious archives belong in a sandboxed native extractor. ZipCrypto password encoding for non-ASCII characters is not reliably interoperable across tools.

Frequently asked questions

Why can another program not open the result?

The archive may be encrypted, truncated, use an unsupported compression method, or lack a valid central directory. A .zip suffix alone does not guarantee compatible ZIP bytes.

Are my files uploaded?

No. Listing and extraction preparation run locally in your browser. Passwords stay in memory only for the currently opened archive.