About This Tool
Documentation
What does this tool do?
A spreadsheet data conversion engine that parses multi-sheet Excel workbooks (.xlsx, .xls, .ods) into structured JSON arrays with sheet selector, header row configuration, and raw vs formatted value extraction. Also converts JSON object arrays back into downloadable `.xlsx` files.
When should you use it?
Use this tool to extract data from financial reports and vendor spreadsheets for API ingestion, or export JSON database records into Excel workbooks for non-technical stakeholders.
Key Capabilities & Features
Highlights
Parse and convert Microsoft Excel spreadsheets (.xlsx, .xls) directly into formatted JSON
Multi-sheet support allowing individual sheet selection or full workbook extraction
Auto-detect headers, numeric formulas, date formatting, and empty cell handling
Convert JSON arrays and objects back into downloadable Excel .xlsx workbooks
100% client-side parsing ensuring sensitive financial and customer data never leaves your browser