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ParquetFormatter

Preview and convert Parquet, CSV, and NDJSON files in the browser, supporting up to 500MB per file.

A browser-based tool that lets users preview and convert Parquet, CSV, and NDJSON files up to 500MB without installation. It serves developers, data analysts, and data teams who need quick format transformations for analytics workflows. The tool is positioned as fast, free, and secure, with all processing done locally or via in-memory workers, and no data stored.

Key features

  • Parquet to CSV conversion
  • CSV to Parquet conversion
  • NDJSON to CSV conversion
  • CSV to NDJSON conversion
  • Preview Parquet and NDJSON files
  • Supports up to 500MB per file
  • Process up to 5 files at once
  • No data stored, secure processing
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ICP
  • Software developers
  • Data analytics teams
  • Engineering teams