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Data Formatter

Clean, structure and format raw JSON or text data instantly.

Free Data Formatter — Clean, Sort & Deduplicate JSON or Text

Messy data — whether it's malformed JSON or a list full of duplicate lines — slows down your workflow. Our free Data Formatter automatically detects if your input is JSON or plain text, then applies the right cleanup: pretty-printing valid JSON, or offering sorting, deduplication, and whitespace cleanup for text.

Why Use This Tool

  • Auto-detection: No need to specify format — the tool figures it out.
  • Multiple cleanup actions: Sort, deduplicate, trim spaces, remove empty lines.
  • JSON validation: Instantly see if your JSON is valid and properly formatted.
  • No signup required: Paste your data and get results immediately.

Key Features

Smart Format Detection

Automatically identifies JSON vs plain text.

Line-Based Tools

Sort, dedupe, trim, remove empty lines.

Step-by-Step: How to Use

Step 1: Paste your raw JSON or a list of text lines into the input box.

Step 2: Click "Format / Fix" to auto-detect and clean your data.

Step 3: Use additional buttons like Sort, Remove Duplicates, or Trim Spaces as needed.

Step 4: Copy your cleaned result with one click.

Benefits

  • Saves time compared to manually cleaning messy data line by line.
  • Reduces errors from duplicate or inconsistently formatted entries.
  • Works for both structured JSON and unstructured text lists.

Common Use Cases

  • Cleaning up a pasted list of emails or usernames.
  • Validating and pretty-printing JSON copied from an API response.
  • Removing duplicate entries from a data export.
  • Sorting a list of items alphabetically before use.

Privacy & Security

Automatically detects whether your input is JSON or plain text. For JSON, it validates and pretty-prints the structure. For text, it offers sorting, deduplication, and whitespace cleanup tools. All processing happens locally in your browser.

Frequently Asked Questions

How does this tool detect JSON vs text? +
It attempts to parse as JSON first; if that fails, it falls back to text cleanup mode.
Removes exact duplicate lines, keeping the first occurrence of each.
Yes, use Sort A-Z or Sort Z-A.
Removes leading, trailing, and repeated internal spaces.
It detects and reports errors, but you must manually fix syntax issues.
Yes, completely free with no size limits.
No, all processing happens locally in your browser.
Yes, the Remove Empty Lines button does this automatically.
JSON Formatter has JSON-specific features like tree view; this tool auto-handles both JSON and text.
Yes, commonly used to deduplicate and sort line-based lists.

Related Tools

Also try our JSON Formatter and Case Converter.

Ready to clean your data? Paste it above — free and instant.

Share Your Experience

Found this tool useful? Have a suggestion or found a bug? Send your feedback directly to us — we read every message.