Is the JSON Viewer private?

JSON parsing runs in your browser. Your input is not uploaded.

What can I use the JSON Viewer for?

Inspect API responses, Check config files, Clean pasted JSON are common uses. The tool runs in your browser so it is suitable for quick checks and sensitive snippets.

Does HappyFormatter store JSON Viewer input?

No. HappyFormatter's utility tools process pasted input in the browser tab and do not store it on a server.

HappyFormatter Local code tools

Browse tools

Private browser utility

JSON Viewer

View, check, and pretty-print JSON locally in your browser. Paste JSON and inspect the formatted output without uploading data.

What this tool is good for

Pretty-print JSON with two-space indentation.

Check JSON syntax before copying it into a config, API client, or editor.

Show a compact structure summary for arrays and objects.

Web

5 families

HTML

Markup

Format HTML

CSS

Stylesheet

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JavaScript

Browser script

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TypeScript

Typed script

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SCSS

Stylesheet

Format SCSS Minify SCSS

Data

7 families

JSON

Structured data

Format JSON Minify JSON

XML

Structured markup

Format XML Minify XML

YAML

Config data

Format YAML

TOML

Config data

Format TOML

SQL

Query language

Format SQL

Proto

Schema

Format Proto

Markdown

Document

Format Markdown

Runtime

7 families

Python

Application code

Format Python Format with Ruff

PHP

Server script

Format PHP Format with Mago

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Java

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Systems code

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Systems

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C

Native source

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Native source

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.NET source

Format C#

Objective-C

Apple source

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Zig

Systems code

Format Zig

Utilities

5 families

JSON Tools

JSON

JSON Viewer JSON Sort Keys JSON Diff

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Web

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JSON to YAML YAML to JSON JSON to CSV XML to JSON

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