# Mr. Data Converter

> Convert spreadsheet data from Excel or CSV formats into web-friendly formats including JSON, HTML, and XML.

- Website: https://shancarter.github.io/mr-data-converter/?ref=devshelf.io
- DevShelf page: https://devshelf.io/resource/mr-data-converter
- Pricing: Free
- Tags: Open Source, Self-hosted, No sign-up
- Categories: [Developer Utilities](https://devshelf.io/category/developer-utilities.md)
- Last checked: 2026-11-02

## About

Mr. Data Converter is a utility tool designed to transform tabular data, such as copy-pasted values from Microsoft Excel or comma-separated values, into structured web formats like JSON, XML, and HTML tables. It provides options for adjusting delimiters, handling headers, transforming case, and customizing indentation and whitespace. The source code is publicly accessible on GitHub.

## Alternatives

- [Table Format Converter](https://devshelf.io/resource/table-format-converter.md): Convert tabular data between CSV, HTML, JSON, and Markdown formats instantly online with local processing for enhanced privacy. (pricing: Free)
- [Fmtly](https://devshelf.io/resource/fmtly.md): An open source browser-based collection of developer utilities including JSON, XML, YAML, CSV and TOML formatters, validators, and encoders. (pricing: Free)
- [Transform](https://devshelf.io/resource/transform.md): A web-based polyglot code and data transformation tool for converting between various formats such as JSON, TypeScript, GraphQL, CSS, and SVG. (pricing: Free)

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