JSON Formatter

What does a JSON formatter do?

A JSON formatter — also called a JSON beautifier or pretty printer — takes raw, minified, or inconsistently indented JSON and re-serializes it with clean, predictable indentation and line breaks. The result is JSON a human can actually read: nested objects line up, arrays are easy to scan, and the shape of the data is obvious at a glance.

Formatting is the first thing most developers do with an API response or a config file. Whether you are debugging a webhook payload, reviewing a Kubernetes value, or making sense of a log line, beautifying the JSON turns a wall of text into a structure you can navigate. When you only need to read a payload rather than reformat it, the read-only JSON viewer is the lighter-weight companion.

JSON formatter and validator — format and check in one step

This tool does four jobs in one place. Beautify expands JSON with 2-space, 4-space, or tab indentation. Minify strips every unnecessary character to produce the smallest valid payload — ideal for embedding JSON in a URL or shipping it over the wire. Sort keys reorders every object alphabetically and recursively, which gives a document a deterministic layout and makes version-control diffs clean instead of noisy.

Because the formatter validates as you type, it doubles as a JSON formatter and validator in a single step. Every edit is parsed against the JSON grammar and any error is flagged immediately with the exact line and column number. You get formatting and validation together — no need to run two separate tools or copy the output into a second checker.

Format messy, non-standard JSON

Real-world JSON is rarely pristine. This formatter tolerantly parses the near-misses you copy out of code and logs, then rewrites them into strict, valid JSON you can trust:

• Python dictionaries with single quotes and True, False, None.
• JavaScript object literals with unquoted keys and trailing commas.
• // line and /* block */ comments left in by hand.
• Single or backtick quotes instead of double quotes.

JSON prettier — pretty-print JSON in one click

A JSON prettier is another name for a JSON beautifier or pretty-printer: a tool that reformats compact or inconsistently spaced JSON into a clean, human-readable layout. The terms JSON prettier, JSON formatter, and JSON beautifier all describe the same operation — expanding a flat or minified document so keys and values align, nested objects indent, and the structure is obvious at a glance.

Click Beautify to pretty-print your JSON instantly. You can choose 2-space, 4-space, or tab indentation depending on the style guide you follow. The result is ready to paste into a config file, a code review comment, or documentation — clean, consistent, and valid.

JSON minifier — compress JSON for production

A JSON minifier strips all unnecessary whitespace, line breaks, and indentation from a JSON document, producing the smallest possible valid payload. Minified JSON is faster to transfer over the network, smaller in storage, and appropriate for embedding in URLs, API request bodies, or database columns where size matters.

Click Minify above to compress your JSON in one step. The minifier preserves all string values exactly — whitespace inside strings is never removed, only the structural whitespace between tokens. Switch back to Beautify at any time to expand it for readability again.