What is CSV?

CSV (Comma-Separated Values) is a plain-text format for tabular data where each line represents a row and values are separated by a delimiter — typically a comma (,) or tab (\t for TSV). It's the most common interchange format for spreadsheets, databases, and data pipelines.

How it works

This viewer parses CSV and TSV files entirely in the browser using auto-detected delimiters. It renders data in a virtualized table for performance with large files, supports inline editing, column sorting, search, and data science split presets (train/test/validation).

How to use this tool

• Drag & drop a .csv or .tsv file, or click to browse
• Sort columns, search across all fields, and edit cells inline
• Use split presets to partition data into train/test sets
• Export modified data back to CSV

Common use cases

• Previewing CSV exports from databases or APIs
• Quick edits to data files without opening Excel or Google Sheets
• Splitting datasets for machine learning workflows
• Inspecting TSV files from bioinformatics or log pipelines