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Extract ZIP Online

Open a .zip, review its contents and download the files you want, with built-in protection against dangerous archives.

Processed locally in your browser

Options

What is Extract ZIP Online?

This tool lists the entries of a ZIP archive first (name, size, compressed size, ratio, date) and then decompresses them locally so you can download each file. It also opens other ZIP-based files such as .jar, .apk, .docx, .xlsx or .epub.

Untrusted archives are a real attack vector, so extraction is defensive. Entry names are sanitized (no "..", absolute or drive paths, backslashes converted), sizes declared in the archive are never trusted (real bytes are counted while decompressing), and the archive is refused with a clear zip-bomb warning if it has more than 5,000 entries, more than 500 MB in total, a single entry over 100 MB, or an entry compressing more than 200:1. Password-protected entries are skipped.

How does it work?

  1. Drop a .zip (or .jar, .docx…) file on the drop zone.
  2. Review the entry table and any suspicious-name warnings.
  3. Optionally type a text filter to extract only names that contain it.
  4. Download the extracted files from the result list.

Common use cases

  • Opening an archive on a locked-down computer or phone where no unzip tool is available.
  • Pulling a single file out of a large archive without extracting everything.
  • Checking a downloaded archive for path-traversal names before unpacking it on a server.
  • Extracting images or XML from a .docx or .xlsx file.

Examples

Open a .zip, review its contents and download the files you want, with built-in protection against dangerous archives.

Privacy

Extract ZIP Online runs entirely in your browser. The text or files you provide are processed on your device and are not uploaded, logged or stored on our servers.

Limitations

Encrypted (password-protected) entries cannot be extracted, and only the ZIP format is supported (not RAR, 7z or tar). Extracted files are offered for download but never opened or executed. Safety limits cannot be raised beyond 500 MB in total.

Frequently asked questions

What is a zip bomb?

A small archive that expands to gigabytes (for example by compressing long runs of zeros) to exhaust memory or disk. This tool refuses archives that exceed its size and ratio limits.

Why are some file names changed?

Names like ../../evil.txt or C:\Windows\x.dll could write outside the target folder. They are cleaned to a safe relative path, and duplicates get a numeric suffix.

What does "skip the ratio check" do?

It lets you extract a legitimately very compressible file (for example a huge log). The 100 MB per-file and 500 MB total limits still apply.

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