Инструменты JSON и кода

Форматирование JSON — Бесплатный онлайн-инструмент

Форматируйте и делайте отступы в неаккуратном JSON для читаемой структуры.

Работает в браузере
Мгновенные результаты
100% приватно

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What Is a JSON Formatter?

A JSON formatter takes minified or inconsistently indented JSON and rewrites it with clean, consistent indentation, making nested objects and arrays easy to read and debug at a glance.

This is especially useful when working with API responses, which are almost always returned minified to save bandwidth — pasting one into a formatter instantly reveals its structure without needing to trace matching brackets by eye.

Кто использует этот инструмент?

Для бизнеса

Inspect a minified API response to understand its structure.

Для личного использования

Read a configuration file that was saved without formatting.

Для студентов

Learn JSON structure for a web development or API course.

Для офисов

Format a data export for easier manual review.

Зачем использовать этот инструмент

Основные возможности

Custom Indent Size

Choose an indent size from 1 to 8 spaces.

Instant Formatting

Output updates immediately as you paste in JSON.

Clear Error Messages

Invalid JSON shows exactly what went wrong.

100% Private

Your data is never uploaded — formatting happens entirely in your browser.

Результат

Преимущества

Instantly Readable

Turn a wall of minified JSON into a clearly indented structure.

Faster Debugging

Spot missing brackets or misplaced values much more easily once formatted.

Nothing Uploaded

Safe for sensitive API payloads, since nothing leaves your browser.

Пошагово

Как использовать Форматирование JSON

Paste Your JSON

Add minified or messy JSON into the input box.

Choose an Indent Size

Pick how many spaces to indent each level.

Copy the Formatted Result

Use the Copy or Download button to grab the result.

Характеристики

Технические детали

Параметр	Значение
Ввод	Valid JSON text
Обработка	No practical limit — handled entirely by your browser
Вывод	Exact, lossless re-formatting using the native JSON parser

Это можно проверить

Конфиденциальность и безопасность

Что на самом деле происходит с вашим файлом при использовании этого инструмента.

100% Client-Side

This tool runs entirely inside your browser using JavaScript — nothing you type or generate is ever sent anywhere.

No Upload, Ever

There is no file upload and no server processing step — your data never leaves your device.

Works Offline

Once this page has loaded, the tool keeps working even without an internet connection.

Nothing Stored

Nothing you enter is saved on our servers — refreshing the page clears everything.

No Tracking of Your Input

We have no way to see what you type, generate or convert with this tool.

Как улучшить результат

Советы

Use 2 Spaces for Web Projects

2-space indentation is the most common convention for JSON in web projects.

Check the Validator First on Large Payloads

If formatting fails, use the JSON Validator to pinpoint the exact error.

Часто задаваемые вопросы

You'll see a clear error message describing the problem instead of a formatted result.

No — formatting uses your browser's native JSON parser and never sends data to a server.

No — only whitespace and indentation change; keys, values and structure remain identical.

Yes — choose any indent size from 1 to 8 spaces.

Yes, limited only by your browser's available memory.

They work almost identically; the Beautifier additionally offers a tab-indent option alongside numeric space counts.