ProsePen

Data Converter

Convert structured data between CSV ↔ JSON, JSON ↔ YAML, and Markdown ↔ HTML with instant preview.

Runs in your browser. Your text and files are not uploaded or stored · Files up to 100 MB.

How it works

  1. 1Add a fileDrop it here. Conversion runs in your browser.
  2. 2Pick the formatChoose what you want it turned into.
  3. 3DownloadSave the converted file.

Works well with

Code & JSON FormatterFormat and validate JSON or code

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