XLSX Duplicate Row Report

• Enter the displayed example values,or choose the local input files requested by the controls. Optional source files take precedence where labelled.
• Choose Find duplicate rows and inspect the complete result and any reported limitations.
• Use Download result and each companion download link to save complete outputs. Reset clears output and restores example controls.

Worksheet position: 1
Key column positions,comma-separated: 1
First data row: 2
Last data row (0 for all remaining): 0

• Find duplicate original declared worksheet rows by selected1-based key columns. Report all group members with original row/cell addresses and stored typed values. Numeric cache spellings use exact decimal identity;strings,Booleans,errors,literal ISO dates,absent cells,explicit blanks and empty strings stay distinct. Formula key cells require a representable stored cache;styles are ignored and styled date serials stay numeric. No displayed-value/Excel-rounding equivalence,formula evaluation or source mutation. Select a1-based worksheet position and row range;end0 means remaining declared rows. Up to50,000 rows/500columns/500,000 key lookups and8-MiB cumulative key index. One standard Transitional XLSX up to20 MiB;50sheets/64-MiB expanded package,8-MiB/200,000-node inspected XML parts. Macros,signatures,embedded/ActiveX objects,encrypted files and external workbook links refuse. No external resource is fetched. Complete JSON report20 MiB. All processing stays in your browser.
• Complete outputs only. Unsupported or oversized input is refused. Follow the displayed job-specific bounds and format policies.