Online CSV Viewer
Open, read, and convert multi-gigabyte CSV files instantly
What it does
Open massive CSV files (up to 2GB) without crashing your browser. 100% private, client-side CSV viewer & editor. No server uploads. Fast and secure.
Does the same job
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- CGCSV GB+ by Data.olllo – Open and Process CSVs Locally2025 · apps.microsoft.com · ▲51
I built CSV GB+ by Data.olllo, a local data tool that lets you open, clean, and export gigabyte-sized CSVs (even billions of rows) without writing code. Most spreadsheet apps choke on big files. Coding in pandas or Polars works—but not everyone wants to write scripts just to filter or merge CSVs. CSV GB+ gives you a fast, point-and-click interface built on dual backends (memory-optimized or disk-backed) so you can process huge datasets offline. Key Features: Handles massive CSVs with ease — merge, split, dedup, filter, batch export Smart engine switch: disk-based "V Core" or RAM-based "P…
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