Free local tool

ZIP File Viewer

Inspect a bounded local ZIP archive, member metadata, suspicious paths, and safe text previews without uploading or extracting it.

Private by design: inputs and local files stay in this browser tab. The tool sends no input to a server and stores nothing after the page closes.

JavaScript is required for the interactive tool.

Method and limits

Uses a custom central-directory parser with no runtime dependency. Supports stored and deflate members only; ZIP64, encryption, multi-disk archives, and uncommon compression methods are rejected. Bounds: 100 MB archive, 10,000 entries, 20 MB per member, 500 MB declared total, 200:1 compression ratio, 2 MB per preview, and 20 MB preview budget. Nested archives are not opened and files are never extracted to disk.