JSON Formatter & Validator
Beautify, validate, fix, and minify JSON data with instant syntax error highlighting.
How to Use JSON Formatter & Validator
Paste or Load JSON
Paste your raw JSON string into the input editor, or click "Load Sample" to test formatting.
Select Indentation
Choose your preferred indentation format (2 spaces, 4 spaces, or Tabs) or choose Minify.
Copy or Download
The formatted output updates instantaneously. Click "Copy" or "Download" to save your result.
Capabilities & Standards
Programmatic Implementation & Code Snippets
Automating this workflow in your backend services, build scripts, or terminal pipelines? Copy these verified, idiomatic code examples:
import json
raw_json = '{"name":"ToolNara","status":"active","tools":4}'
# Parse string into dictionary
parsed = json.loads(raw_json)
# Pretty-print with 2-space indentation
formatted = json.dumps(parsed, indent=2)
print(formatted)const rawJson = '{"name":"ToolNara","status":"active","tools":4}';
// Parse into object
const parsed = JSON.parse(rawJson);
// Pretty-print with 2 spaces (null replacer)
const formatted = JSON.stringify(parsed, null, 2);
console.log(formatted);# Pretty-print JSON from a file
cat data.json | jq '.'
# Minify / compact JSON for network payloads
cat data.json | jq -c '.'Frequently Asked Questions
Is my JSON data safe and private? ▼
Yes, absolutely. ToolNara processes all JSON operations locally inside your web browser using JavaScript. No JSON data is ever transmitted to or logged on any external server.
Can this tool validate invalid or broken JSON? ▼
Yes. If your JSON has trailing commas, unquoted keys, or missing brackets, the validator immediately catches the error and reports the exact character and line number.
What is the maximum file size supported? ▼
Because processing occurs in your local browser memory, it can comfortably handle multi-megabyte JSON payloads with zero network latency.
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