View ZIP file metadata, comments, compression methods, creator OS, version needed to extract, and hidden headers. Free and private.
Upload your ZIP file to read the raw archive headers.
Examine details like compression methods, timestamps, creator OS, and file paths.
Download metadata details or audit for hidden tracking details.
Your data is processed entirely inside your browser using client-side JavaScript. Nothing ever travels over a network to any server — making BunchTool the most private option available.
Because everything runs locally in your browser, there are no upload queues or server wait times. Results appear in seconds regardless of your internet speed — or even without any connection at all.
Uncover hidden properties, system headers, original timestamps, and compression details that standard file extractors don't show.