Developer Builds Free Browser-Based JSON to Excel Converter for Nested Data

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A developer has created a free, browser-based tool that converts JSON data into Excel spreadsheets without requiring user registration or file uploads. The project was motivated by the limitations of existing tools, which often imposed file-size restrictions, demanded sign-ups, or failed to handle nested JSON structures. The converter validates input, flattens nested objects into column headers, and processes arrays before generating a downloadable Excel file. It was designed to help developers share API responses with non-technical business users for reporting, testing, and data analysis. The tool is publicly accessible at convertonlinetool.com and the developer is seeking community feedback for future improvements.

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