If you work with LLM APIs (OpenAI, Claude, Gemini) or legacy Python backends, you know the pain of broken JSON payloads: trailing commas, Python booleans (True/False/None), unescaped quotes, and invisible zero-width Unicode characters (\u200B) that silently break parsers in production.

Most online JSON formatters require you to paste your payload into a web form that sends your data to their backend servers—which is a massive security risk when debugging production logs or customer data.

To solve this, I built DataPurge, an instant data sanitizer and format converter that runs 100% client-side in your browser with zero tracking or server uploads.

Key Features:

  • LLM Broken JSON Repair: Automatically strips markdown code blocks (`json) and fixes malformed syntax from AI outputs.
  • Python Dict to JSON Converter: Converts single quotes and True/False/None values into valid JSON in one click.
  • Zero-Width Character Stripper: Detects and removes hidden Unicode characters that cause silent syntax errors.
  • Client-Side Format Conversion: Convert between YAML, CSV, XML, and JSON locally without data ever leaving your machine.

Feel free to bookmark it for your daily debugging workflow or share feedback on what formats/repairs would be useful next!