Features

Everything you need to work with JSON, all in one powerful tool.

Lightning Fast Processing

All JSON processing happens instantly in your browser. No server round-trips, no waiting. Format, validate, and transform megabytes of JSON in milliseconds.

100% Privacy Guaranteed

Your data never leaves your device. Unlike other tools, we don't upload your JSON to any server. Perfect for sensitive or proprietary data.

All Features

Real-Time Validation

As you type, our validator checks your JSON syntax and displays errors instantly. See exactly which line has the issue and what's wrong.

Interactive Tree View

Explore complex JSON structures visually with our collapsible tree view. Expand and collapse nested objects and arrays to understand your data.

Auto-Repair JSON

Fix common JSON errors automatically. Our repair tool handles trailing commas, single quotes, unquoted keys, and undefined values.

Format & Beautify

Transform minified or messy JSON into clean, properly indented code. Customizable indentation with 2-space formatting by default.

Minify JSON

Compress your JSON by removing all unnecessary whitespace. Perfect for reducing payload sizes in APIs and configuration files.

File Upload Support

Drag and drop JSON files directly into the editor, or use the upload button. Support for .json, .txt, and other text files.

Load from URL

Fetch JSON directly from any public URL or API endpoint. Great for debugging API responses without leaving the tool.

Download Results

Export your formatted or minified JSON as a downloadable file. One click to save your work locally.

One-Click Copy

Copy formatted JSON to your clipboard instantly. Visual feedback confirms the copy was successful.

Dark Mode

Easy on the eyes with full dark mode support. Theme automatically matches your system preference or toggle manually.

Why Choose Our Tool?

FeatureToolNettOthers
Client-side processingYesSometimes
No data uploadedYesNo
Auto-repair errorsYesRare
Tree viewYesSometimes
URL loadingYesRare
Free foreverYesVaries

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Start formatting and validating JSON in seconds.

Open JSON Formatter