Compress Excel
Reduce Excel (.xls, .xlsx) file size online for free. No sign-up, no watermark — shrink your spreadsheet for email in seconds while formulas stay intact.
Select a file or drop it here
.xls, .xlsx · up to 25 MB
document.pdf
0 KB
0 images · one per page
Compressing…
This usually takes a few seconds.
Select or drop your Excel file
We compress it on the server in seconds
Download your smaller Excel file
Need something else? Compress PDF · Excel to PDF
To compress an Excel file for free, upload your .xls or .xlsx file above and download a smaller version in seconds. The compressor shrinks embedded images — screenshots, logos, pasted charts — while leaving your cells, formulas, and formatting untouched. If a file cannot be reduced further, you get your original back unchanged. No sign-up, no email, and no watermark.
Compress Excel — free online Excel compressor
Need to compress an Excel file so it is small enough to email, upload, or store? Our free Excel compressor reduces your .xls or .xlsx file size in seconds, right in your browser. There is nothing to install, no account to create, and no watermark added to your file. Just upload your workbook, let us compress it on the server, and download the smaller result.
We shrink your file by downsampling and re-encoding the images embedded inside it — pasted screenshots, logos, charts saved as pictures — using a balanced setting that keeps them clear while cutting their file size. Your cells, formulas, and formatting are never touched. And if a file is already optimized and cannot be reduced, we simply return your original, so you never end up with a larger file than you started with.
Which Excel files are supported?
Both the older .xls format and the modern .xlsx format are supported, up to 25 MB per file. An .xls file is first normalized to the modern .xlsx format as part of compressing it, so your download comes back as a .xlsx. A password-protected workbook should have its password removed in Excel first (File → Info → Protect Workbook), since an encrypted file cannot be read.
How to compress an Excel file online free
Wondering how to compress an Excel file free? It takes three simple steps. First, open the compressor above and drop in your .xls or .xlsx file. Second, we compress it on the server in seconds, shrinking embedded images while keeping your data and formulas intact. Third, download your smaller Excel file — that is it. There is no sign-up, no email verification, and no waiting in a queue.
Why is my Excel file so large?
Unlike a Word document, a spreadsheet's bloat can come from several places — but embedded images (pasted screenshots, logos, charts saved as pictures) are the one this tool fixes automatically. Other common causes, like a bloated PivotTable cache or formatting applied to entire columns, need a manual fix in Excel itself rather than a file transformation — see our guide on why your Excel file is so large for the full list and how to fix each one.
Compress Excel without losing data
Our goal is a smaller file that works exactly the same. Cell values, formulas, and formatting are fully preserved — only embedded images are re-encoded to a screen-friendly resolution that stays clear at normal zoom. For everyday workbooks you get a real size reduction with no visible difference in the data or layout.
Free, private, and on every device
This free Excel compressor has no limits, no watermark, and no catch. Your privacy is built in: files are processed in memory and never written to disk or stored, then discarded the moment your download is ready. It works on any device, from Windows and Mac to iPhone and Android. When you need to convert instead of compress, our Excel to PDF and Compress PDF tools work exactly the same way.
Frequently asked questions
Why does my compressed file download as .xlsx instead of .xls?
A legacy .xls file is normalized to the modern .xlsx format as part of compressing it — .xlsx is a more efficient container, so this is a natural part of shrinking the file. The data, formulas, and formatting stay the same.
Will compressing break my formulas?
No. Only embedded images are re-encoded. Every cell, formula, and piece of formatting is left exactly as it was — the compressor never touches worksheet data.
How do I compress an Excel file for free?
Drop your .xls or .xlsx file into the box above and it is compressed in seconds. There is no sign-up, no watermark and no cost — just download the smaller file. Our free Excel compressor works entirely online, so there is nothing to install.
How do I reduce the size of an Excel file to email it?
Many email services cap attachments at around 20–25 MB. Upload your Excel file here, let us compress it, and download a much smaller file that fits within those limits — ideal for sending reports and image-heavy workbooks by email.
How much smaller will my Excel file get?
It depends on what is inside. Workbooks with pasted screenshots, logos, or chart images often shrink noticeably. Workbooks that are mostly formulas and data may barely change, since text and numbers are already compact. Either way you never get a file larger than the one you uploaded.
Does this fix a large file caused by a PivotTable cache?
Not directly — this tool only compresses embedded images. A PivotTable cache is a different kind of bloat that needs a manual fix in Excel (disabling "save source data with the file" or rebuilding the pivot from a trimmed range). See our guide on why Excel files get large for the full list of causes.
Does this work with both .xls and .xlsx files?
Yes. Both the older .xls format and the modern .xlsx format are accepted. An .xls file is normalized to .xlsx as part of compressing it, so your download always comes back as a .xlsx.
Your privacy comes first
Every uploaded file is processed securely over an encrypted connection and is never written to disk or stored — it is automatically discarded the moment your download is ready. We never ask for an email address, and you never need to create an account before you can download your document. Read more in our Privacy Policy.
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Last updated: July 2026