Will Inspect Archive extract anything to disk?

No. It only reads the central directory / file index. The compressed bytes are never written out.

Which formats are supported?

ZIP, 7z, RAR, TAR, and GZ. Format detection is automatic via magic bytes, with extension as a fallback.

Can I inspect a password-protected ZIP?

Yes — the file list is visible because ZIP keeps filenames in the central directory unencrypted. Sizes and encryption flags are shown too.

Why does the compression ratio matter?

A ratio close to 1.0 means the archive is already as small as it gets — switching formats or levels will not shrink it further. Useful before sending or uploading.

Inspect Archive

Inspect · ZIP · 7z · RAR · TAR · GZ

1. Select an archive

Drop an archive here or click to browse

Select a file

Compare ArchivesDiff two archives: see files unique to each and shared files with size differences.
Estimate CompressionSee how small your files get at each ZIP level — store, fast, normal, max — before you commit.
Checksum ArchiveSHA-256 and SHA-1 for a ZIP archive and every file inside. Verify integrity without uploading.
Create ZIPCombine files and folders into a ZIP archive with adjustable compression levels.

Inspect Archive

1. Select an archive

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