XLSX Viewer
Open XLS/XLSX workbooks locally with multi-sheet preview, filter, sort, copy, and CSV export
About this tool
XLSX Viewer opens local XLS and XLSX workbooks up to 20 MB without uploading them. Switch between worksheets, choose a header row, view formatted display values, raw stored values, or formula text, search across rows, sort any column, hide fields, copy the complete filtered visible table as TSV, click a cell to copy it, and export the filtered view as CSV. Processing is limited to 50,000 rows and 200 columns per sheet, while the interface renders the first 500 matching rows for responsiveness. The viewer does not recalculate formulas, execute macros, fetch external connections, or reproduce Excel layout and charts.
Scenario Recipes
Review an unfamiliar workbook before conversion
Goal: Inspect sheets, formulas, and headers without changing the source file
- Open the workbook and switch through every worksheet while checking dimensions and formula counts.
- Set the correct header row, filter the target records, sort the comparison field, and hide unrelated columns.
- Copy the review table or export filtered CSV, keeping the original workbook unchanged for traceability.
Result: A focused tabular extract plus a clear view of workbook structure and formulas.
Frequently Asked Questions
Which workbook formats are supported?
The viewer accepts local .xls and .xlsx files up to 20 MB.
Can I switch between worksheets?
Yes. Every worksheet name is listed and the selected sheet is loaded into the interactive table.
Can it display formulas?
Yes. Formula mode shows stored formula text, but the browser does not recalculate results.
Does export include all filtered rows?
Yes. The table renders up to 500 rows, while copy and CSV export include every filtered row within the processing limit.
Will charts, macros, and layout look like Excel?
No. This is a data viewer; it does not execute VBA, render charts, reproduce print layout, or load external connections.
Is the workbook uploaded?
No. Workbook parsing, filtering, sorting, copying, and CSV generation happen locally.
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