JSON Formatter & Beautifier
Format, prettify, and beautify messy JSON with configurable indentation and key sorting.
- 100% client-side · your data never leaves your browser
- Instant, no rate limits
- Free, no sign-up
Your result appears here
Paste JSON into the panel on the left — everything runs privately in your browser.
Overview
Free Online JSON Formatter & Beautifier
Pretty-print messy, minified, or escaped JSON into clean, readable text in one click. JsonDrift's JSON formatter and beautifier supports 2-space, 4-space, and tab indentation, plus optional alphabetical key sorting for deterministic output. Whether you received a compressed API log, a single-line config from CI, or hand-edited JSON with inconsistent spacing, this tool restores human-readable structure without changing any values. All formatting runs in your browser — private, instant, and free.
What is JSON formatting (pretty-printing)?
JSON formatting adds indentation and line breaks so you can scan nested objects and arrays quickly. It does not alter data: numbers, strings, booleans, null, key order (unless you enable sort), and structure remain identical. Pretty-printing is the first step in almost every JSON debugging session.
Developers call the same process beautifying JSON, formatting JSON, or pretty-printing JSON. JsonDrift handles all of these use cases with the same engine.
When to format JSON
- Before code review or sharing snippets in tickets and docs
- After receiving minified API responses or log exports
- When diff tools produce noisy output on single-line JSON
- To surface syntax errors — invalid JSON fails to format and shows an error
- Before manual editing in the JSON editor
Indentation options: 2 spaces, 4 spaces, or tabs
Two-space indentation is the most common default in JavaScript and web APIs. Four spaces suit teams that prefer extra visual separation. Tab indentation aligns with some legacy configs and personal preference. Pick the style your team standardizes on; JsonDrift applies it consistently across the entire document.
Sort keys for stable, diff-friendly JSON
Alphabetical key sorting produces deterministic output. The same logical object always serializes the same way, which makes snapshot tests, golden files, and config drift detection far less noisy. Enable 'Sort keys' when you care about comparability more than preserving author order.
JSON formatter vs minifier
Formatting expands JSON for readability. Minifying collapses it to the smallest valid representation. Use the formatter when humans read the file; use the minifier when bytes on the wire matter. JsonDrift offers both tools with the same privacy guarantees.
FAQ
Frequently asked questions
Does formatting change my JSON data?
No. Only whitespace changes. Parsed values and structure stay the same.
Can I format invalid JSON?
No. The formatter parses JSON first. Fix syntax errors with the validator or editor, then format.
Is this JSON beautifier free?
Yes. No sign-up or upload required.
What is the best indentation for JSON?
2 spaces is the most common standard. Use 4 spaces or tabs if your team or linter requires them.
Continue with a related tool
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