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Check CSV syntax (lint) and format CSV data in your browser. Supports automatic delimiter detection, error detection, and statistics display.
Paste or type CSV data in the input area. The delimiter will be automatically detected.
Statistics and error list are displayed in real-time. Errors include line numbers and types.
Select formatting options and click the 'Format' button to generate formatted CSV output.
CSV Lint & Formatter is an online tool that checks CSV data for syntax errors and formats it in your browser. It automatically detects delimiters, identifies errors like column count mismatches, empty rows, and duplicate headers, and provides formatting options including empty row removal, cell trimming, and column alignment. All processing happens entirely in your browser, so your data stays private.
Comma (,), tab, semicolon (;), and pipe (|) are supported. The auto-detection feature identifies the optimal delimiter, but you can also select one manually.
Column count mismatches (rows with different column counts from the header), unclosed quotes, empty rows, and duplicate headers. Each error shows the line number for quick identification.
Three formatting options: remove empty rows, trim leading/trailing whitespace in cells, and align column widths with padding. Each can be toggled independently.
No, all processing happens entirely in your browser. Your input data is never sent to any server.