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FreeFileKit
Excel EditorView and edit XLSX filesXLSX ConverterXLSX to CSV / JSONFormula EvaluatorTest Excel formulasChart from XLSXVisualize spreadsheet dataMerge SheetsCombine multiple sheets
PDF to ImagePDF to JPG/PNGCSV to JSON/TSVConvert spreadsheet formatsXLSX to CSVExcel to CSVBase64Encode/decode files as Base64
Coming Soon
XLSX Converter
Convert Excel files to CSV, JSON, or other formats — and back again

We're building this tool. Check back soon.

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YantraKosha

Free online tools that just work. No sign-up, no paywalls, no tricks.

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Design & Creative

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v0.1.0

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Launched March 22, 2026

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