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ZIP Viewer and Extractor
Inspect or extract ordinary and split ZIP files, or recover intact damaged ZIP entries.
ZIP, PKZIP split ZIP (.z01…final .zip)
Files, JSON, ZIP
Browser only
Runs locally in your browser. Your files, pasted content and generated output are not uploaded. Reset clears this tool’s working data.
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How to use this tool
- Choose one ZIP file and select Inspect contents, Extract files or Recover intact ZIP entries.
- For extraction, optionally enter exact file paths from the contents report, one per line. Clear selected paths before recovery.
- Recovery downloads a new ZIP and a separate JSON report. Review every omission and the stopping point; recovery cannot establish completeness or reconstruct missing bytes.
- For split ZIP, select every matching .z01, .z02, … and final .zip part, choose Inspect split ZIP or Extract split ZIP, and clear selected paths. Parts are ordered by filename number; extraction returns all contents in one verified ZIP.
Examples
Limitations
- 20 MiB input, 1,000 examined entries, 16 MiB per entry and 64 MiB total examined output, including data later rejected by CRC. Strict extraction allows at most 100 downloads. Processing has a 30-second deadline and can be cancelled.
- ZIP supports stored/Deflate content and ASCII or UTF-8 names. Strict inspection/extraction rejects encryption, ZIP64, symlinks, unsafe paths and damaged structure.
- Recovery walks local headers from byte zero and never scans compressed content for apparent entries. It stops at unknown boundaries, truncation, streaming data descriptors or ZIP64. Self-extracting prefixes are unsupported. Encrypted or corrupt entries are omitted only when their declared boundaries remain known.
- Only size/CRC-verified, unambiguous paths are retained. All duplicate/case-colliding or file/directory-conflicting recovered paths are omitted. CRC detects accidental corruption, not tampering. Read the report: recovered entries are not a guarantee of complete recovery.
- Recovery preserves retained paths and bytes but omits original metadata, timestamps, permissions and comments. Every output entry is an ordinary file or empty directory; symlink semantics are never recreated. No passwords are guessed and no archive content is executed.
- Split mode: 2–32 nonempty PKZIP parts totaling 20 MiB, 1,000 entries, 16 MiB each and 64 MiB actual expansion. Missing/duplicate parts, wrong disk offsets, CRC errors, unsafe or Unicode/case-colliding names reject the complete operation. Raw .zip.001 chunks, encryption, ZIP64 and digital signatures are unsupported. Source filenames/bytes are preserved; original archive metadata is omitted. CRC is not authentication.
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