Data tools
JSON Formatter
Format, validate, and inspect JSON data locally in your browser. Validate, prettify, minify, sort, inspect, and export JSON entirely in your browser.
210
Chars
13
Input lines
4
Root items
object
Root type
Loaded sample JSON
Input
Paste raw JSON, clean JSONC, or load from clipboard
Output
Valid JSON ready in formatted view
{
"project": "Toolport",
"features": [
"json formatting",
"uuid generation",
"base64 conversion"
],
"seo": {
"strategy": "page-first",
"status": "active"
},
"browserOnly": true
}Why this formatter is worth bookmarking
It formats and validates JSON locally, so API payloads, configuration files, and copied responses never leave your browser.
Output is practical rather than decorative: you can switch between formatted, minified, sorted, and tree views, then download the exact version you need.
Clipboard helpers, JSONC cleanup, string escaping tools, and paste automation make repetitive developer work faster instead of just prettier.
FAQ
Does this send JSON to a server?
No. Parsing and formatting happen entirely in the browser.
Can it handle large JSON?
Yes for normal development use, and the preview updates in a deferred path to keep typing responsive.
Can it clean JSON with comments?
Yes. The JSONC cleanup helper removes line comments, block comments, and trailing commas before you reformat.
Why this page has value
JSON formatter pages are only strong when they go beyond pretty-printing. This one combines validation, minify, sorting, tree view, JSONC cleanup, and string escaping in one workflow.
Workflow notes
The page is designed for real debugging loops: paste input, find an error, switch views, clean the structure, copy the result, and move on without jumping across several tools.
Privacy and trust
JSON stays in the browser during formatting and inspection, which matters for API payloads, internal configuration, copied responses, and private structured data.
Can this clean JSON with comments or trailing commas?
Yes. The JSONC cleanup helper removes line comments, block comments, and trailing commas before you reformat.
Does it support tree-style inspection?
Yes. Tree view lets you expand nested objects and arrays instead of reading only raw text output.
Can I minify and sort keys too?
Yes. Minified and sorted output modes are part of the same page, which makes it more practical for repeated work.
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