Format & minify
Beautify with indentation or compress to a single line. Customizable indent size for reading or production.
Browse JSON in a collapsible tree view with path copying support.
From formatting and validation to conversion and export — 10 essential tools in one page. No install, no sign-up, ready to use.
Beautify with indentation or compress to a single line. Customizable indent size for reading or production.
Detect JSON syntax errors with precise line/column numbers. Catch trailing commas, quote issues, and more.
Side-by-side comparison of two JSON documents with highlighted additions, deletions, and changes.
Browse complex JSON in a collapsible tree. Copy paths to quickly locate nested fields.
JSON ↔ YAML, JSON → XML, JSON → CSV / Excel — for config authoring and data export.
Debug JSONPath expressions online. Extract nested fields with one-click templates.
Built for anyone who works with JSON daily — debugging, configuration, testing, and data export.
Everything runs locally in your browser. Paste JSON and see results instantly — nothing is uploaded.
Pick the feature you need from the top navigation — format, validate, diff, convert, and more.
Paste JSON into the input area, or click Load sample to try each feature instantly.
Results appear in real time on the right. Copy or download — all processing stays local.
The JSON tree viewer renders your data as an interactive, collapsible tree. Expand nested objects and arrays, inspect values at any depth, and copy JSONPath-style paths with one click.
{"user":{"id":1,"profile":{"name":"Alice"}}}{"products":[{"sku":"A1","price":9.99}]}A JSON tree viewer displays JSON as an expandable hierarchical tree, making it easy to navigate complex nested structures.
Click any node in the tree and its JSONPath (e.g. $.user.profile.name) is copied to your clipboard.
Yes, for files under 2 MB. Very deep nesting may require scrolling but all nodes remain accessible.
Yes. JSON Toolbox is completely free with no sign-up, no usage limits, and no hidden fees.
Your data never leaves your browser. All parsing, formatting, and conversion runs locally on your device — nothing is sent to any server.
All modern browsers including Chrome, Firefox, Safari, and Edge. No plugins or extensions required.
Files over 2 MB may feel slow; files over 10 MB are blocked. For very large payloads, use a local CLI tool instead.
Only standard JSON (RFC 8259) is supported. JSON5 features like comments and trailing commas are not accepted.