JSON Formatter
Pretty-print, minify, validate, and sort JSON keys in the browser. Choose 2- or 4-space indent, import a file, download the result.
135 chars · 12 lines · object
How it works
Paste or import JSON
Drop an object or array into the box, or import a .json file. Invalid syntax is flagged as you type.
Format, minify, or validate
Format pretty-prints with 2- or 4-space indent. Minify removes whitespace. Validate checks syntax without changing the input. Sort keys alphabetizes every object recursively.
Copy or download
Copy the result to your editor or download it as formatted.json.
What is a JSON formatter?
A JSON formatter turns compact or messy JSON into readable indented text, or the reverse. Developers use it to inspect API responses, debug config files, and prepare payloads before sending them. This page runs locally so secrets in your JSON never leave the device.
Why use this tool
- Pretty-print with 2- or 4-space indent
- Minify and validate JSON in the browser
- Sort object keys alphabetically (recursive)
- Import .json files and download the result
- Live syntax check as you type
- Unlimited use with no daily cap
Questions
What does JSON Formatter do?
It pretty-prints, minifies, validates, and sorts JSON keys. Everything runs in this tab. Your data is never uploaded.
How do I use JSON Formatter?
Paste JSON or import a file, then click Format, Minify, Validate, or Sort keys. Copy or download the result when it looks right.
What does Sort keys do?
It reorders every object key alphabetically, including nested objects. Arrays keep their item order.
Does Validate change my input?
No. Validate only checks syntax and shows Valid JSON or the parser error. It does not modify the input box.
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When to use JSON Formatter
People reach for JSON Formatter when a quick job should not require installing desktop software or creating an account. Pretty-print, minify, validate, and sort JSON keys in the browser. Developer utilities remove friction from small tasks: formatting, snippets, colors, loaders, and other front-end helpers. Compared with installing a desktop suite only for json formatter, a dedicated page keeps the interface small and the intent obvious. Quota cookies may still track anonymous daily free-plan uses. That is different from receiving your file bytes or pasted text. This page has no daily free-plan cap, so you can run it as often as you need. If a free-plan limit applies, the workspace shows remaining uses before you commit a download, so you are not surprised after a long wait.
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