Excel (XLSX) Processing Skill

When working with Excel spreadsheets, follow these guidelines:

1. Reading & Extracting from XLSX

Extract to CSV:

# Using ssconvert (from gnumeric)
ssconvert input.xlsx output.csv

# Specific sheet
ssconvert -S input.xlsx output.csv

# Using LibreOffice
libreoffice --headless --convert-to csv input.xlsx