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WorldReduce Excel file size by removing bloat and re-compressing with maximum deflate.
Excel files accumulate hidden bloat over time — unused styles, formula caches, and printer configs. Compress them for faster email attachments, smaller backups, and quicker uploads to other tools.
No. Only internal metadata and caching files are removed. All cell values, formulas, and formatting are preserved.
Results vary. Files with large formula caches or verbose printer settings can shrink 10–40%. Already-compact files may see minimal reduction.
Yes. Removing calcChain.xml just clears the cached calculation order — Excel recalculates it automatically when you open the file.