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CSV Data Handyman

by WebF1

Privacy First

The CSV data handyman

Convert, map, and export CSV data locally in your browser.

CSV Data Handyman is a free, privacy-first CSV converter. Import a CSV file, map source columns to destination fields, preview the result, and export to JSON, XML, or SQL. No uploads. No account. No tracking. Your CSV data stays on your device.

No uploadsNo accountNo trackingRuns in your browser

Available CSV converters

CSV to JSON

Convert CSV rows to a JSON array with renamed and nested fields.

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CSV to XML

Convert CSV rows to XML with configurable root and row elements.

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CSV to SQL INSERT

Generate INSERT statements from CSV rows for PostgreSQL, MySQL/MariaDB, and Microsoft SQL Server.

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CSV to SQL UPDATE

Generate UPDATE statements with required WHERE keys for PostgreSQL, MySQL/MariaDB, and Microsoft SQL Server.

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CSV to SQL UPSERT

Generate upsert statements (ON CONFLICT, ON DUPLICATE KEY, or MERGE) for PostgreSQL, MySQL/MariaDB, and Microsoft SQL Server.

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CSV Column Mapper

Rename, reorder, transform, and map CSV columns for export.

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Why a private CSV converter?

Customer lists, export files, and operational data often contain names, emails, account numbers, and other sensitive fields. Web-based converters that upload your file add avoidable risk: the data leaves your device and lands on someone else's server. CSV Data Handyman runs the entire pipeline in your browser, so the file never travels anywhere. It is a practical utility for quick, trustworthy data prep work without the compliance overhead of an upload-based tool.

How it works

  1. Pick a converter for the format you need.
  2. Drag and drop a CSV, browse for one, paste CSV text, or load a sample.
  3. Map source columns to destination fields and apply simple transforms.
  4. Preview the output, then copy or download the result.

Read more in the how it works guide, or the privacy page.