Excel File Comparator (Multi-Column Support)

A Streamlit app for comparing two Excel files on selected columns (with support for using multiple columns as a composite key).

Features

• Upload two Excel files and select sheets for comparison
• Pick multiple columns from each file to define the comparison key
• Instantly see:
  • Matched rows (keys present in both)
  • Rows unique to File 1
  • Rows unique to File 2
• Download matches and differences as Excel or CSV files

Usage

1. Install requirements:

   pip install -r requirements.txt

2. Launch the app:

   streamlit run streamlit_excel_multi_compare.py

3. Open the provided local URL in your browser

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Perfect for data validation, deduplication, and reconciliation tasks involving Excel!# streamlit-excel-compare A Streamlit app for comparing two Excel files on selected columns (with support for using multiple columns as a composite key).