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TOOL TOPIC

CSV & data tools

Handle common structured-data tasks such as CSV encoding checks, header differences, duplicates, merging, filtering, and extraction in the browser.

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Common tasks in this topic

Free tools for inspecting CSV encoding and headers, finding duplicates, merging or splitting files, extracting columns, and filtering rows.

1
Inspect CSV encoding and delimiters before importing
2
Merge, split, filter, and extract data files
3
Find duplicates and compare structured data

Tools in this topic

Choose the tool that most closely matches the task you need to finish.

CSV column extractorExtract selected columns from pasted CSV.CSV duplicate finderFind duplicate values and row numbers in a selected column.CSV encoding & delimiter inspectorInspect likely encoding and comma, tab, semicolon or pipe delimiters.CSV header diff checkerCompare header names, order, missing columns and extra columns.CSV mergerMerge multiple CSV files with matching headers.CSV mojibake & character risk checkerFind emoji and special characters that often cause problems in Shift_JIS-based imports.CSV row filterFilter pasted CSV rows by a keyword in a selected column.CSV row splitterSplit a large CSV into files with a chosen number of rows.CSV ⇄ TSV converterConvert between CSV and tab-separated text in your browser.Excel-damaged CSV checkerFind tab conversion, scientific notation and date-like coercion after Excel edits.

Related references

Keep the relevant formats and units close while you work.

CSV / TSVOpen the related reference guideEncodings & BOMOpen the related reference guideLine endingsOpen the related reference guide