Compress Excel File Online โ€“ Reduce XLSX Size

Reduce the size of your spreadsheets by cleaning metadata and optimizing structure.

Related Excel tools: Compare Excel | Auto VLOOKUP | Add Serial Number | Bulk Find & Replace

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Drag & Drop or Click to Upload Excel File

Original Size: -
Compressed Size: -

Compress Excel File Online

Large Excel files are difficult to email, slow to open and consume excessive storage space. Excel file compression reduces file size by eliminating unused formatting, recalculation chains and bloated metadata.

Why Excel Files Become Large

  • Formatting applied to entire columns
  • Unused blank rows and columns
  • Embedded metadata
  • Cached formulas
  • Hidden calculation history

Smart XLSX Optimization

This tool rebuilds your workbook internally using optimized XML structures. Unlike ZIP tools, it understands Excelโ€™s internal architecture and removes junk safely.

What Gets Removed Safely

  • Unused formatting
  • Empty styles
  • Calculation cache
  • Redundant shared strings

What Is Never Changed

  • Formulas
  • Cell values
  • Charts
  • Pivot tables
  • Worksheet layout

Common Use Cases

  • Email Excel attachments
  • Upload limits on portals
  • Cloud storage saving
  • Slow workbook performance
  • Backup size reduction

No Excel Installation Required

This tool works entirely in your browser. Microsoft Excel or Office software is not required.

Privacy & Security

All compression happens locally on your device. Files are never uploaded or stored on servers.

Frequently Asked Questions

Is Excel compression safe?
Yes, only unused data is removed.

Will formulas break?
No, formulas remain unchanged.

Does it support XLS?
No, convert XLS to XLSX first.

Is this tool free?
Yes, unlimited usage.