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Pretty Print Formatter

Paste messy JSON, XML, or SQL and format it into readable, consistently indented text. Runs locally in your browser (no uploads) and includes quick copy + minify.

Category: Data · URL: /tools/pretty-print-formatter.html
Tip: Use Auto first. If detection is wrong, force a mode.
Privacy: runs locally in your browser. No uploads, no tracking scripts.

How to use

Format your data in seconds:

  1. Paste your content into the input box.
  2. Select Auto (or force JSON / XML / SQL) and choose indent options.
  3. Click Pretty Print (or Minify), then copy the output.
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Secondary intents covered: Make raw JSON readable with consistent indentation, Validate JSON and quickly spot syntax errors, Pretty print XML while keeping a clean tag structure, Format SQL into readable clauses and lines, Minify formatted output for compact sharing, Sort JSON object keys for stable diffs, Copy formatted output to clipboard in one click, Switch between auto-detect and forced format modes

FAQ

What formats does this pretty print formatter support?

It formats JSON, XML, and SQL, plus a simple “Text cleanup” mode that removes trailing spaces and normalizes newlines.

Does it upload my data to a server?

No. Formatting runs locally in your browser; the tool does not make network requests.

Why am I seeing an “Invalid JSON” or “Invalid XML” error?

The input can’t be parsed (common causes: missing quotes/brackets in JSON or unclosed tags in XML). Fix the syntax and format again.

What does “Auto-detect” do?

It tries JSON first, then XML, then falls back to SQL/text heuristics. If it guesses wrong, force the correct mode.

What does “Sort JSON keys” change?

It alphabetically sorts object keys (recursively) to make output stable for diffs; arrays keep their original order.

Can I minify after formatting?

Yes—use Minify to compact JSON/XML/SQL into a smaller string for sharing or storage.

How do I format with tabs instead of spaces?

Set Indent to Tabs and click Pretty Print.