How do I format JSON online?

Paste JSON, choose an indentation size and select Format. The formatted result can be copied or downloaded.

What is the difference between formatting and minifying JSON?

Formatting adds indentation and line breaks for readability. Minifying removes unnecessary whitespace without changing data values.

Does this JSON formatter upload my data?

No. Parsing, formatting, validation and export run locally in the current browser tab.

Other Utilities · Browser JSON developer tool

JSON Formatter Online

Paste JSON to beautify, pretty-print, minify or validate it instantly. Compare input and output side by side, then copy, share or download the result without uploading your data.

Format and beautifyReadable two- or four-space indentation.

Validate JSON syntaxFind parsing errors with line and column guidance.

Browser-only processingInput stays in the current browser tab.

JSON Formatter, Minifier & Validator

A simple full-width workspace for JSON documents and API payloads.

Private by design

Formatting and validation run locally. Avoid confidential JSON on a shared or untrusted device.

Indent Open JSON file

Input document

Output document

Ready for JSON input.

How to format JSON online

1. Paste or open JSON

Enter a JSON object, array or primitive value, or open a UTF-8 .json file up to 5 MB.

2. Format, minify or validate

Pretty-print with two spaces, four spaces or tabs; compact the document; or check syntax without changing it.

3. Copy or download

Review the output, copy it to the clipboard, share it where supported, or download a formatted JSON file.

JSON formatter, validator and minifier explained

Operation	What it changes	Typical industry usage
JSON formatter / beautifier	Adds indentation and line breaks while preserving keys and values.	Reading API responses, reviewing configuration, code reviews and debugging logs.
JSON validator	Parses the document and reports invalid syntax without rewriting it.	Testing REST payloads, validating fixtures, troubleshooting integrations and CI data.
JSON minifier	Removes insignificant whitespace but preserves the same parsed data.	Compact API request bodies, embedded configuration and sample payloads.
JSON viewer	Presents valid JSON in a readable monospaced output pane.	Inspecting webhook events, exports, browser data and structured logs.

JSON Formatter options and what they mean

Option	Meaning	When to use it
Format	Parses valid JSON and adds the selected indentation.	Make API payloads, configuration and logs easier to read.
Minify	Removes insignificant spaces and line breaks.	Create a compact payload without changing its parsed data.
Validate	Checks strict JSON syntax and reports the approximate error position.	Find missing commas, invalid quotes and malformed values.
Sort keys	Alphabetically sorts object keys at every level while preserving array order.	Produce predictable configuration, fixtures and review-friendly output.
Find & replace	Finds literal text in the editable input and replaces one or all matches.	Rename repeated keys or values before validating the modified document.
Text / Tree / Table	Switches between source JSON, a collapsible hierarchy and flattened JSON paths.	Choose the clearest view for code review, nested exploration or data inspection.
Compare	Compares parsed input and output while ignoring object-key order and whitespace.	Confirm formatting did not change the underlying JSON data.
Focus / Full width / Browser fullscreen	Expands the workspace in stages without changing the JSON document.	Use more screen space for large payloads and side-by-side review.
Open, copy, share and download	Imports a local JSON file or exports the generated output.	Move validated JSON between editors, tickets, tests and local files.

When to use this JSON developer tool

REST APIs and webhooks

Pretty-print JSON request bodies, API responses, webhook events and GraphQL variables before debugging an integration.

Configuration and DevOps

Validate package manifests, application settings, deployment fixtures and machine-generated configuration before use.

Data review

Make compact exports and structured logs readable, measure document size and download a clean JSON file.

JSON Formatter or JSON Editor?

Use this page when you want a fast JSON formatter, JSON beautifier, JSON validator, JSON viewer or JSON minifier. To change individual nested fields by JSON path, use the JSON Editor Online. JSON formatting cannot repair missing commas, unquoted property names, comments or trailing commas because those are not valid standard JSON. The validator identifies the approximate error location so you can correct the input deliberately.

JSON formatter FAQ

How do I pretty-print JSON online?

Paste valid JSON, choose two spaces, four spaces or tabs, then select Format. The output is a readable representation of the same parsed data.

How do I validate JSON syntax?

Select Validate. Valid input is confirmed; invalid input reports the browser parser message plus an approximate line and column when a character position is available.

Does minifying JSON change its data?

No. It removes unnecessary whitespace after parsing and serializes the same keys, array items and values into compact JSON.

Can I open and download a JSON file?

Yes. Open a JSON file up to 5 MB, process it, then download the result as formatted.json or minified.json.

Is this free JSON formatter private?

The formatter runs in the current browser tab and does not upload your JSON to the website. Device security and browser extensions can still affect privacy.