Use-case online tools

CSV Data Cleanup Tools

Small data tools for cleaning spreadsheet exports and turning them into usable structured text.

csv column extractor json converter6 tools

Useful For

Extract one email column

Convert CSV to JSON

Generate API response types

Which Tool Should I Use?

CSV Column ExtractorChoose this when you need to handle: Extract one column from CSV or TSV text and copy it as a line list.Try an example first, then check real values, units, and whether the output should be shared.CSV JSON ConverterChoose this when you need to handle: Convert CSV to JSON and JSON to CSV directly in your browser.Try an example first, then check real values, units, and whether the output should be shared.JSON FormatterChoose this when you need to handle: Format, minify, validate, sort keys, stringify, and convert JSON Lines.Try an example first, then check real values, units, and whether the output should be shared.JSON to TypeScript GeneratorChoose this when you need to handle: Convert JSON samples into TypeScript interfaces and types.Try an example first, then check real values, units, and whether the output should be shared.Duplicate Line RemoverChoose this when you need to handle: Remove duplicate lines from a list while preserving the first occurrence.Try an example first, then check real values, units, and whether the output should be shared.

Tools In This Set

CSV Column ExtractorExtract one column from CSV or TSV text and copy it as a line list.CSV JSON ConverterConvert CSV to JSON and JSON to CSV directly in your browser.JSON FormatterFormat, minify, validate, sort keys, stringify, and convert JSON Lines.JSON to TypeScript GeneratorConvert JSON samples into TypeScript interfaces and types.Duplicate Line RemoverRemove duplicate lines from a list while preserving the first occurrence.Line SorterSort multiline text alphabetically, reverse alphabetically, or by line length.

Suggested Workflow

01Start with CSV Column ExtractorExtract one column from CSV or TSV text and copy it as a line list. Use an example first to understand the input and output format.

02Continue with CSV JSON ConverterConvert CSV to JSON and JSON to CSV directly in your browser. Use related tools in the same set to avoid repeated manual work.

03Check with JSON FormatterCopy the final output or reopen the example link to confirm the workflow.

Before You Use These Tools

Use these tools for small preprocessing tasks

CSV and JSON tools are best for pasted spreadsheet rows, API response snippets, and test data. Very large exports or sensitive customer data should be cleaned in a database, spreadsheet, or controlled data workflow first.

Check delimiters and quotes first

CSV output can change depending on commas, tabs, line breaks, and quoted values. Before extracting columns or converting to JSON, inspect the header and a few sample rows, then compare the converted output for missing fields.

Re-test generated developer output

JSON formatting and TypeScript type generation are useful drafts, but real API schemas, null values, arrays, and dates should be checked in your project runtime. Remove private tokens or personal data before copying examples.

FAQ

Can it handle large CSV files?

These tools run in browser memory, so they are best for pasted tables and small CSV snippets.

Can I use both CSV and TSV?

Depending on the tool, comma, tab, and line-based text can be handled. Check output carefully when files contain complex quotes or embedded line breaks.

Is data sent to an API?

CSV cleanup and JSON conversion tools are built for browser-side preprocessing and quick copying by default.