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ZIP Size Optimizer

Repack a readable ZIP with bounded extraction and DEFLATE compression; the result may be smaller or larger depending on its contents.

⚡ 199 points per successful run · Balance: 0 · Buy points

Repack a ZIP archive

Rebuild a readable ZIP with bounded extraction and maximum DEFLATE compression where supported. A smaller result is not guaranteed for already-compressed files.

  • ZIP input up to 50 MiB; bounded to 2,000 entries and 40 MiB expanded
  • Unsafe paths and symbolic links are rejected
  • Original metadata is not promised to be removed; review the result before sharing

Your repacked archive will appear here.

About ZIP Size Optimizer

Repack a readable ZIP with bounded extraction and DEFLATE compression; the result may be smaller or larger depending on its contents.

How to use this tool

  1. Enter the requested data or choose an upload.
  2. Check the file type and size limit before submitting.
  3. Review the result, then download or copy it.
  4. Keep the original and use the actions above to continue safely.

Read the full ZIP Size Optimizer guide →