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YFT
Client-side ProcessingUpdated 2026-02-11Report issue

Runs fully in your browser. Inputs stay on your device. See recent fixes on changelog.

CSV Validator

Validate CSV file structure and column consistency.

FreeRuns in browsercsv validatorvalidate csv
Cmd/Ctrl+Enter Primary actionCmd/Ctrl+Shift+L Load sampleCmd/Ctrl+Shift+X Clear/resetCmd/Ctrl+Shift+C Copy result

About CSV Validator

Validate CSV file structure and column consistency. Validate CSV file structure and check column consistency online for free. Detect row and column count mismatches, formatting errors, and data issues. No signup required. Applies consistent indentation and style rules across your entire document with one click. Validation mode checks syntax correctness and reports detailed, actionable error descriptions. Everything runs client-side in your browser for maximum speed and privacy — no data is sent to any server, and no signup is required.

Related tools: CSV to JSON Converter, JSON to CSV Converter, CSV to TSV Converter

How to Use CSV Validator

  1. Paste your code or data into the editor.
  2. Click Format to beautify or Validate to check for errors.
  3. Copy the cleaned output or review any issues found.

Frequently Asked Questions

What is CSV Validator?
Validate CSV file structure and check column consistency online for free. Detect row and column count mismatches, formatting errors, and data issues. No signup required.
What validation rules are applied?
Validation checks for correct syntax according to the language or data format specification. This includes balanced brackets, proper quoting, valid escape sequences, and structural integrity of the document.
Does formatting change the data?
No, formatting only affects whitespace, indentation, and line breaks. The actual data content and semantics remain identical, ensuring your code or configuration behaves exactly the same after formatting.
What indentation options are available?
You can choose between spaces and tabs, and configure the number of spaces per indent level (commonly 2 or 4). The formatter applies your chosen style consistently throughout the entire document.
Is CSV Validator free to use?
Yes, formatting and validation are completely free. There are no usage caps, and no signup or account is ever required.
Is my data safe when using CSV Validator?
Yes, your code and data stay on your device. All formatting and validation happens locally in the browser with no server communication.

Related Tools

CSV to JSON Converter
Convert CSV spreadsheet data to JSON arrays.
JSON to CSV Converter
Convert JSON arrays to CSV spreadsheet format.
CSV to TSV Converter
Convert comma-separated values to tab-separated.