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Combine multiple Excel/CSV files into one

Split by row count or column values

Fix garbled text (Shift-JIS ↔ UTF-8)

Normalize full-width / half-width letters, digits and kana

Convert Japanese eras ⇄ Western years, normalize dates

Remove duplicate/blank rows and trim whitespace

Edit XLS/XLSX/CSV directly in browser, export to XLSX/PDF

Compare two Excel/CSV files and highlight added, deleted and changed rows

Generate QR codes from a list of URLs/text

Mask phone numbers and emails (numeric data preserved)

Merge two files on a common key (automated VLOOKUP)

Auto-aggregate by rows, columns and function

Turn data into a PDF report with table and stats

Extract only rows matching your condition

Visualize group data as a 3D waterfall chart

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