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Upload your .xlsx or .csv files and instantly convert them to a clean JSON array. 100% secure client-side processing.
Click to upload or drag and drop
XLSX, XLS, or CSV up to 10MB
Most online converters upload your sensitive company spreadsheets to their servers. Our Next.js powered tool processes the data directly in your browser using JavaScript. This means zero wait times, zero server limits, and absolute privacy for your business data.