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XLSX Viewer

Is temporarily paused while Utilio replaces the spreadsheet parser. CSV Viewer remains available for CSV and TSV files.

Processing

Runs in your browser. The file and result are not sent to Utilio servers.

How Utilio handles dataWhy files stay on your devicePrivacy Policy

XLSX Viewer

XLSX and XLS preview is temporarily paused while the spreadsheet parser is replaced.

Preview

XLSX and XLS preview is temporarily paused while we replace the spreadsheet parser. CSV Viewer remains available for CSV and TSV files.

What to open next

Related tools and guides for the same job.

CSV ViewerOpen a CSV file online before importing exported leads, orders, logs, or reports.DOCX ViewerOpen a DOCX or Word attachment online on a shared or lightweight device.JSON File ViewerOpen exported API data, configs, fixtures, or logs.PPTX ViewerOpen a PPTX presentation online and review slide text from an attachment.PDF to ExcelMove a simple PDF report into spreadsheet rows for sorting.Excel to PDFExport XLSX or XLS files from Excel, LibreOffice, or another trusted spreadsheet app.

Helpful guides

Read more about this task, privacy, and common limits.

How to Open XLSX Without Sending Files to a ServerOpen guide

What XLSX Viewer does

Use XLSX Viewer when you need to use CSV Viewer for CSV or TSV exports.

When to use it

  • Use CSV Viewer for CSV or TSV exports.
  • Open XLSX and XLS files in a trusted spreadsheet app until replacement ships.
  • Check this page again after the parser replacement is released.

How to use it

  1. Use CSV Viewer if the data is available as CSV or TSV.
  2. For XLSX or XLS, use Excel, LibreOffice, or another trusted spreadsheet app.
  3. Do not rely on this route for spreadsheet preview until it is re-enabled.

What to check

  • XLSX and XLS parsing is intentionally disabled during the parser replacement.
  • CSV and TSV files are still handled by CSV Viewer.

Data, formats, and limits

What stays on your device and what is sent

Runs in your browser. The file and result are not sent to Utilio servers.

Supported formats

Supported: XLSX, XLS. Not supported: ODS, CSV, PDF, DOCX.

File limits and browser requirements

  • Paused during parser replacement
  • XLSX and XLS parsing is intentionally disabled while the spreadsheet parser is replaced.
  • Use CSV Viewer for CSV or TSV files, or a trusted spreadsheet app for XLSX and XLS.

Known limits

  • XLSX and XLS parsing is intentionally disabled while the spreadsheet parser is replaced.
  • Use CSV Viewer for CSV or TSV files, or a trusted spreadsheet app for XLSX and XLS.

Troubleshooting

  • If the file does not open, check the extension, size, and save a simpler copy.
  • If a spreadsheet, document, or presentation looks different from the desktop app, verify the source file in the app that created it.
  • If search or preview feels slow, try a smaller file or close extra tabs.
All file viewersPrivacy PolicyHow Utilio handles data

Common questions

What does Utilio receive?

Runs in your browser. The file and result are not sent to Utilio servers.

What is it useful for?

Use it when you need to use CSV Viewer for CSV or TSV exports. Start by use CSV Viewer if the data is available as CSV or TSV.

Do I need an account?

No. You can use this tool without creating an account.

Can I use it on a phone?

Yes. For large files, complex previews, or careful review, a browser on a computer is usually more comfortable.

How do I get a reliable result?

Use CSV Viewer if the data is available as CSV or TSV. Then for XLSX or XLS, use Excel, LibreOffice, or another trusted spreadsheet app. XLSX and XLS parsing is intentionally disabled during the parser replacement.

Which formats are supported?

XLSX Viewer supports XLSX, XLS. It does not support ODS, CSV, PDF, DOCX.

What file size works best?

Paused during parser replacement. Browser memory and device speed can still affect large files.

Why did I not get the result I expected?

XLSX and XLS parsing is intentionally disabled while the spreadsheet parser is replaced. If the result still looks wrong, try a smaller or simpler input and review the output before using it.

Does Utilio use my input or results to train AI?

No. Utilio does not use files, pasted text, settings, generated values, or results from this tool to train AI models.