JSON Formatter

Format, validate and minify JSON with readable indentation.

Help Us Improve
4.9 (0)

How to use JSON Formatter

Three quick steps — no sign-up needed

  1. Step 1

    Paste your JSON

    Drop in a JSON string from an API response or config file.

  2. Step 2

    Choose indentation

    Pick 2 spaces, 4 spaces, or tabs for pretty-printed output.

  3. Step 3

    Format, validate, or minify

    Beautify for reading, confirm validity, or minify for compact payloads.

Related Developer tools

View all
Base64 Encode / Decode Encode text to Base64 or decode Base64 back to plain text. CSS / JS Minifier Minify CSS or JavaScript to reduce file size for production. Code Case Converter Convert identifiers between camelCase, snake_case, kebab-case and related styles. Color Converter Convert colors between HEX, RGB and HSL with a live color picker. Cron Expression Explainer Explain a cron schedule expression in plain English. Epoch / Timestamp Converter Convert between Unix epoch timestamps and human-readable dates. HTML Entity Encode / Decode Escape or unescape HTML entities such as < > and &. HTML Formatter Beautify and indent messy HTML, or minify it for smaller markup.

About JSON Formatter

JSON Formatter pretty-prints, validates, and minifies JSON so API payloads and config files become readable. Developers searching "JSON formatter", "JSON validator", or "pretty print JSON" use it daily when debugging responses.

Paste JSON, select indentation (2 spaces, 4 spaces, or tab), and format. Invalid JSON surfaces as an error instead of silent corruption - fix commas, quotes, and trailing commas before shipping.

Minified JSON is smaller on the wire; pretty JSON is better for humans and diffs. Keep secrets out of public formatters when payloads contain tokens.

A JSON text tool - not a database or schema migration system.

Benefits of JSON Formatter

Validate while formatting Catch syntax errors early.
Indent choices Match your project style guide.
Minify option Compact JSON for production configs.
API debugging aid Read nested objects without squinting.

Frequently asked questions

Why is my JSON invalid?

Trailing commas, single quotes, or unquoted keys are common issues in non-strict drafts.

Does it sort keys?

Formatting focuses on whitespace; key order behaviour depends on the implementation.

Can it format JSON5?

Standard JSON is the target - JSON5 extras may fail validation.

Is minify only removing spaces?

It produces compact valid JSON without pretty whitespace.

Should I paste production secrets?

Avoid - treat formatters as visible environments.