XLSX Data Inspector
Inspect workbook sheets, identify blank columns, and export a selected table.
How can I inspect a spreadsheet without Excel?
Open the file to see worksheet names and dimensions, preview rows, and identify blank columns. Export the selected table as CSV.
Your workbook
Files stay on this device. Up to 20 MB per file.
Preview
A clear place to read.
Choose a file to see its content and available exports here.
Three simple steps
How to use XLSX Data Inspector
Choose your input and adjust the options.
Review the preview and run the tool.
Download the result and keep your original.
Common questions
Good to know
Understand the result.
Keep the original.
Is this tool free, and are my files uploaded?
This tool is free with no account required. The work happens in your browser. Your input and files are not sent to a processing server.
What are the limits and details?
Processing stays on your device. Use files up to 20 MB with at most 50 MB of expanded document data. Complex page layout, embedded scripts, and external resources are not preserved. Keep your originals.
Limits: 500,000 characters per text field; files up to 20 MB each, 10 files and 50 MB total. Processing stops after 30 seconds.