Compress XLSX Files
Reduce XLSX file size while maintaining quality. Fast, free, and secure.
✨ Key Benefits
- Optimizes embedded media
- Preserves data and formulas
- No watermarks, ever
- Browser-based, nothing to install
- Cloud processing in seconds
💡 Why Use This?
- Email large spreadsheets under size limits
- Share dashboards and reports faster
- Upload to portals with strict caps
- Store workbook archives efficiently
- Send image- or chart-heavy files
How to Compress XLSX Files
Upload File
Select or drag your XLSX file to the upload area above.
Compress
Your file is automatically compressed to reduce size.
Download
Download your compressed file instantly.
Why Compress XLSX Files?
An XLSX is a zipped package of XML, and files often balloon from embedded images, charts, and leftover formatting. Optimizing these shrinks the workbook.
How XLSX Compression Works
Our tool re-optimizes embedded media and repacks the workbook more efficiently, keeping your data, formulas, and sheets intact.
Keeping Data and Formulas Safe
Your cells, formulas, and worksheets are preserved; only heavy embedded media and packaging overhead are optimized, so the spreadsheet works exactly as before.
Lightning Fast
Cloud-powered processing delivers results in seconds, not minutes.
Bank-Level Security
256-bit SSL encryption. All files automatically deleted after 1 hour.
100% Free
No hidden costs, no registration required. Compress files instantly.
Frequently Asked Questions
Will my formulas stay intact?
Yes. Cells, formulas, and sheets are preserved; only embedded media is optimized.
Why is my XLSX so large?
Often due to embedded images, charts, or excess formatting.
How much smaller will it be?
It depends on the embedded media and overhead in the file.
Does it work with .xls too?
This tool targets XLSX; older .xls files have a separate compressor.
What is the maximum file size?
Up to 30 MB per XLSX on this tool.
Are my uploaded files safe and private?
Yes. Uploads use a 256-bit SSL encrypted connection and every file is automatically deleted from our servers within one hour. We never add watermarks.
