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Spreadsheet Editors - Excel & CSV Tools

Browser-Based Spreadsheet Editing

Spreadsheet editing traditionally requires Microsoft Excel, LibreOffice Calc, or Google Sheets. Our browser-based tools handle common spreadsheet tasks using the SheetJS library, allowing quick edits, merges, and transformations without expensive software or cloud accounts.

Supported Formats

XLSX (Excel 2007+) is the modern Excel format using ZIP-compressed XML. We can read, modify, and write XLSX files including formulas, formatting, and multiple sheets.

XLS (Legacy Excel) is the older binary format. We can read XLS files for conversion or data extraction.

CSV (Comma-Separated Values) is universal plain text format. We handle various delimiters, encodings, and quote characters.

Common Spreadsheet Tasks

  • Merge workbooks: Combine multiple Excel files into one
  • Split sheets: Extract sheets from multi-sheet workbooks
  • Column editing: Rename, reorder, or delete columns
  • Data cleaning: Remove duplicates, fix formatting, normalize data
  • Format conversion: Convert between XLSX, CSV, and other formats
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