Powerful Features for Excel Analysis

Multi-File Support & Intelligent Loading

Load multiple Excel files (.xlsx, .xls) and CSV files simultaneously. SheetAtlas handles all your spreadsheets in one workspace, making it easy to search and compare data across different sources.

Key Capabilities

• Multiple formats: Support for .xlsx (Excel 2007+), .xls (Excel 97-2003), and .csv files
• Batch loading: Load multiple files at once using file picker or drag-and-drop
• All sheets accessible: Every worksheet in your Excel files is available for search and analysis
• Merged cells support: Correctly handles merged cells without data corruption
• CSV delimiter detection: Automatically detects comma, semicolon, tab, and pipe delimiters
• Error handling: Graceful handling of corrupted or password-protected files with clear error messages

Use Cases

• Compare data across multiple Excel reports from different sources
• Search for specific values in dozens of spreadsheet files
• Analyze CSV exports from different systems side-by-side
• Find discrepancies in multi-sheet workbooks

Advanced Search with Regex Support

Search across all loaded files, worksheets, and cells with powerful pattern matching. The tree-view results make it easy to navigate findings organized by file, sheet, row, and column.

Search Options

• Case-sensitive matching: Toggle case sensitivity for precise or flexible searches
• Exact match mode: Find cells that exactly match your search term (no partial matches)
• Regular expressions: Use powerful regex patterns for complex search criteria
• Multi-file search: Search across all loaded files simultaneously
• Sheet filtering: Limit search to specific worksheets if needed

Regex Examples

• \d{4}-\d{2}-\d{2} → Find dates in YYYY-MM-DD format
• [A-Z]{2}\d{6} → Find IDs like AB123456
• ^(error|warning|fail) → Find cells starting with error keywords
• \b\d{1,3}(,\d{3})*(\.\d{2})?\b → Find formatted numbers

Tree View Results

Search results are organized hierarchically: File → Sheet → Row → Column. Expand nodes to drill down, click to jump directly to matching cells. Perfect for understanding the context of your findings.

Intelligent Row Comparison

Compare rows from different Excel files with automatic column header mapping. SheetAtlas highlights differences and similarities, making it easy to spot data discrepancies even when column orders differ.

Smart Features

• Column mapping: Automatically matches columns by header name, not position
• Visual highlighting: Differences clearly shown in red, missing values marked, matching cells remain neutral
• Side-by-side view: Compare rows from two different files in a split-panel interface
• Handle missing columns: Gracefully shows when a column exists in one file but not the other
• Data type awareness: Intelligent comparison respects numeric vs. text values

Common Use Cases

• Compare before/after versions of data exports
• Verify data migration between different systems
• Audit changes in financial reports or inventory lists
• Find discrepancies in customer records from different sources
• Reconcile data where column order has changed

Why Column Mapping Matters

Traditional Excel comparison tools fail when column order changes. SheetAtlas maps columns by header name, so you can compare "Customer Name" to "Customer Name" even if one is in column A and the other in column F. This is essential for real-world data comparison.