GeekDas

JSON Formatter & Validator

Free online JSON formatter, validator, and minifier. Beautify and format JSON with custom indentation, validate syntax errors instantly, or minify JSON for production.

Input JSON

Formatted JSON

Other Tools

PX to REM ConverterConvert pixels to REM units and vice versaREM to PX ConverterConvert REM to pixels and vice versaPX to EM ConverterConvert pixels to EM units and vice versaEM to PX ConverterConvert EM to pixels and vice versaPX to VW ConverterConvert pixels to viewport width unitsVW to PX ConverterConvert viewport width units to pixelsHash GeneratorGenerate MD5, SHA-1, SHA-256, SHA-512 hashesPassword GeneratorCreate strong, secure random passwordsUUID GeneratorGenerate RFC 4122 UUID v4 identifiersText Case ConverterConvert text to uppercase, lowercase, title caseURL Shortener & LinktreeShorten URLs and create your link-in-bio pageImage ResizerResize JPG, PNG, WebP images in your browser, 100% privateHTML EditorWrite HTML, CSS, JS with live preview in a split-pane editorEpoch ConverterConvert Unix timestamps to dates and back, with live epoch clockMarkdown RendererWrite Markdown and see a live rendered preview with GFM supportColor ConverterConvert between HEX, RGB, and HSL color formats instantlyBase64 Encoder / DecoderEncode text or files to Base64 and decode Base64 strings back to plain textDate Invite MakerCreate a fun "would you go on a date with me?" shareable linkUpwork Proposal FormatterBold and italic key phrases in your Upwork proposal to stand outUTM Link BuilderAdd UTM tracking parameters to any link with presets and clean-upWould You Rather MakerCreate a two-option poll and watch votes roll in live as a shareable linkSpin the WheelRandom decision wheel with presets and a shareable linkCountdown TimerCount down to any event and share the live countdown as a linkAge CalculatorExact age in years, months and days plus next birthday countdownDays Between Dates CalculatorFind the days, weeks and months between two datesWorking Days CalculatorCount business days between two dates and skip holidaysWord & Character CounterCount words and characters, reading time and character limitsEMI CalculatorMonthly loan EMI, total interest and amortization scheduleText Diff CheckerCompare two texts and see added, removed and changed linesFinger PickerPlace fingers on your phone and pick a random winner (mobile only)

What is a JSON Formatter?

A JSON formatter (also called a JSON beautifier or JSON pretty printer) takes compact or minified JSON and reformats it with proper indentation and line breaks, making it human-readable. It also validates the JSON syntax and highlights any errors. Developers use JSON formatters to debug API responses, inspect configuration files, and clean up data before committing to a codebase.

Features

Format & Beautify JSON

Instantly formats minified or unreadable JSON into a clean, indented structure. Supports 1, 2, 4, and 8 space indentation, as well as tab indentation.

Minify JSON

Strips all whitespace and line breaks to produce the most compact JSON possible. Ideal for reducing payload size in APIs and web apps.

Validate JSON

Automatically detects syntax errors and shows a clear error message. Helps you locate and fix malformed JSON before it causes bugs.

Editable Output

The formatted output panel is editable. Changes you make sync back to the input so you can format and tweak in the same workflow.

Frequently Asked Questions

Formatting adds indentation and line breaks to make JSON readable by humans. Minifying removes all whitespace to produce the smallest possible output for use in APIs and production environments.