How do I format or beautify JSON?

Paste your JSON into the editor and click the "Format" button. The tool will parse and re-indent your JSON with 2-space indentation, making it easy to read.

How do I validate JSON?

Click the "Validate" button in the toolbar. The editor uses JSON.parse() to check your input and shows the exact error position if the JSON is invalid.

Is my data secure in this JSON editor?

Yes. All processing happens entirely in your browser. Your JSON data is never uploaded to any server. There are no accounts or sign-ups required.

What is the tree view?

The tree view shows your JSON as a collapsible, colour-coded hierarchy. Strings appear in green, numbers in blue, booleans in orange, and null values in grey. You can expand or collapse objects and arrays to explore large JSON documents.

JSON Editor

100% Private

100% Local

No Signups

Edit, format, minify, and validate JSON with a live tree view. Runs entirely in your browser — your data never leaves your device.

100% Private — processed in your browser

Search keys or values in the JSON source

JSON Input

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Tree View

Paste or upload JSON to see the tree view

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Need this in a production workflow?

Use one-time API credits for automation, or Max for larger files, background jobs, batches, and PDF audio.

20 free test creditsTransparent meteringNo subscription required

Use the API Max plans

How It Works

Step 1: Paste or Open JSON

Paste JSON or open a local .json or .geojson file. The source stays in the browser.

Step 2: Format, Validate & Search

Beautify, minify, validate syntax, and count case-insensitive key or value matches in the source.

Step 3: Inspect & Export

Navigate the collapsible tree, copy the edited source, or download a clean JSON file.

Why Use This Tool

Fast private inspection for API responses, configuration files, manifests, and GeoJSON
Source editor and collapsible tree remain visible together on desktop
Clear invalid-JSON feedback before data reaches an API, build, or deployment
No account, paste tracking, or server upload for confidential payloads

Common Use Cases

Debug an API response, inspect nested configuration, validate a package or deployment manifest, review GeoJSON properties, minify a payload for testing, or search repeated keys before editing. Use JSON to Markdown or JSON to PDF when non-technical reviewers need a friendlier output.

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PDF Converter: All Formats

Complete guide to converting PDFs to and from various formats.

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Why Local PDF Processing is More Secure

Learn how browser-based PDF tools protect your privacy better than cloud services.

Privacy

Security

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