Text & Data Conversion
Format JSON, convert JSON to CSV and Markdown to HTML — all in one wizard, in the browser.
Pick a conversion above — everything runs locally in your browser, no data is sent to any server.
Paste or type JSON, then click `Format`.
Text and data conversion in one place
This free conversion wizard formats JSON, converts JSON to CSV and back, and transforms Markdown into HTML with a live preview. Useful for developers, analysts, and content creators.
Full privacy — data processed locally
Your data is not sent to any server. All conversion happens in your browser on your device.
Frequently asked questions
- Is my data sent to a server?
- No. JSON formatting and JSON ↔ CSV and Markdown → HTML conversions all run entirely in your browser. Data never leaves your device.
- What can the conversion wizard do?
- In one place you can format and validate JSON, convert JSON to CSV and back, and transform Markdown into HTML with a live preview.
- Does JSON to CSV conversion handle nested data?
- Yes. The tool automatically detects columns from object keys and stores complex values (objects and arrays) as JSON text in the cell. It also works in reverse: CSV to JSON.
See also
Text Editor
Sort, clean, find & replace, reverse and transform lines of text — all in one wizard, in the browser.
Text Analysis
Count words and characters, check word frequency and estimate reading time — all in one wizard.
Text Formatting
Change letter case, naming conventions, generate a slug and remove diacritics — all in one wizard.