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Workbook Inspector & Safe Sheet Preview
Inspect sheet names, dimensions, and bounded previews across common Excel formats with the EasyExcel engine.
Drop files here or choose files from your device
Files are sent only after you confirm. Processing uses a request-specific temporary workspace and removes request data when the request ends.
How to use Workbook Inspector & Safe Sheet Preview in 3 steps
- Choose your file: Supports .xlsx, .csv; Maximum 15 MiB
- Review the preview or confirm processing: Files are sent only after you confirm. Processing uses a request-specific temporary workspace and removes request data when the request ends.
- Get the result immediately: Download the processed file and open it in Microsoft Excel or Google Sheets
Why does this problem happen, and how does this tool fix it?
Large or unfamiliar XLSX, XLSM, XLSB, XLS, and ODS workbooks can take a long time to open, making it difficult to identify which sheets contain real data or how large their used ranges are.
How it works and protects your data: The planned container flow uses EasyExcel in a request-specific temporary environment to inspect workbook structure and return a bounded preview without permanent file storage.
Frequently asked questions
Which workbook formats are supported?
The inspector supports .xlsx files up to 10 MiB and .csv files up to 15 MiB (one file per request).
Why must I confirm before the workbook is read?
Container tools do not send files automatically. Confirmation makes the upload boundary explicit before data leaves your device.