Does ByteKiln upload my JSON data?
No. The ByteKiln JSON Formatter runs entirely in your browser using JavaScript. There is no server, no network request, and no logging. Your data never leaves your device.
{ } Formatters
JSON Formatter & Validator
Format, validate, and minify JSON instantly with a browser-first editor.
Sort keys Copy compact Great for APIs
How the JSON Formatter & Validator Works
The ByteKiln JSON Formatter parses your input using the browser's native JSON.parse() function, then re-serializes it with JSON.stringify() using 2-space indentation. No data leaves your device — everything runs client-side.
What does formatting do?
Formatting adds whitespace and indentation to make the hierarchy of objects and arrays visually clear. The output is semantically identical to the input — only the presentation changes, not the data.
When should you sort keys?
The sort keys option reorders all object properties alphabetically at every nesting level. Use it when comparing two JSON snapshots, normalizing API response shapes, or preparing configs for version control diffs.
Minify vs. format
Minifying removes all whitespace to produce the smallest possible output — useful for query strings, database columns, or API payloads where byte size matters. Format for readability; minify for transmission.
FAQ
Short answers for the things developers usually ask before trusting a tool.
Can this tool validate malformed JSON?
Yes. Invalid JSON produces a detailed error message with the line and column number where parsing failed, rather than silently producing broken output.
What is the difference between formatting and minifying JSON?
Formatting (pretty-printing) adds whitespace and indentation to make JSON human-readable. Minifying removes all unnecessary whitespace to produce the smallest possible output, which is useful for APIs and configuration values.
Does the JSON formatter support large files?
The formatter handles files up to several megabytes in the browser. Performance depends on your device, but typical API responses and configuration files process instantly.
Can I sort JSON keys alphabetically?
Yes. The sort keys option reorders all object keys alphabetically at every nesting level, which is useful for diffing configurations and normalizing API snapshots.
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