CSVLinter

Fast, free & accurate CSV quality check online

Upload your CSV, catch format errors in seconds, and keep your data pipeline clean—secure, browser-based, no sign-up.

CSV files

Maximum 5 files, .csv format only

Schema (optional)

Upload your JSON schema file (optional) to validate against a specific structure. See example

Options

Blazing performance

Validate millions of rows in seconds with our high-throughput engine

Custom schema enforcement

Define precise rules and data types to meet any spec or compliance need

Multiple access methods

REST API, CLI tools, and VS Code extension for different workflows