Work with data

Format, convert and validate without uploading anything.

Working with JSON, CSV, YAML or XML means jumping between formats all day: you get one, you clean it, convert it and validate it. This workflow gathers the conversions in one place and keeps them private — everything runs in your browser, so you can paste real data without it leaving your machine.

  1. Format & validate JSON ⚙️ Free JSON Formatter Format, indent and validate JSON instantly in the browser. Pinpoints syntax errors and shows their exact location. 100% local.
  2. JSON to YAML ⚙️ JSON to YAML — Free Converter Convert JSON to readable YAML instantly in the browser. Useful for Kubernetes manifests, GitHub Actions, Docker Compose. 100% local.
  3. YAML to JSON ⚙️ YAML to JSON — Free Converter Turn YAML into JSON instantly in the browser. Supports scalars, lists, nested maps and comments. 100% local.
  4. JSON to CSV 🔄 JSON to CSV converter Convert a JSON array to CSV ready for Excel or Google Sheets. Detects columns, flattens nested objects and escapes quotes (RFC 4180). Runs in your browser.
  5. CSV to JSON ⚙️ CSV to JSON — Free Converter Turn CSV into a JSON array of objects. Header detection, quote handling and configurable separators. 100% in-browser.
  6. Format XML ⚙️ Free XML Formatter Indent, format and validate XML instantly in the browser. Handy for SOAP, RSS, sitemaps, Java/Spring configs and legacy responses.
  7. Generate test data 📊 Test data generator (CSV/JSON) Generate synthetic datasets with names, emails, addresses and more. Export as CSV or JSON, ready to import into your database or tests.

Outcome: You convert and validate across JSON, CSV, YAML and XML, and when you need a test dataset you generate one with no real data.