JSON Validator, Formatter & Viewer

Validate, format, minify, and visualize JSON — with file import support (JSON, TXT, JS). Fast, accurate, and works entirely in your browser.

Free online JSON validator, formatter, minifier, and viewer with file upload support (JSON, TXT, JS). Detect errors with line and column numbers. Works fully in your browser with no data uploaded.

This advanced JSON validator and formatter lets you quickly check JSON syntax, format it with proper indentation, minify it for production, and visualize it as an interactive tree. It is ideal for working with APIs, configuration files, logs, and any structured JSON data.

Paste your JSON, upload a file, or drag and drop it into the editor. The tool highlights errors with line and column numbers, and the JSON viewer allows you to expand, collapse, and search through complex JSON structures — all directly in your browser with no data uploaded.

Input JSON

Drag & Drop a JSON file here or click to choose

Sort Keys Remove null values Remove empty objects/arrays

📁 Upload JSON File

Output

JSON Viewer (Expand / Collapse)

JSON Validator – FAQ

Is this JSON tool safe to use?

Yes. All validation and formatting happens directly in your browser. No data is uploaded to any server.

What can I do with this JSON tool?

You can validate JSON, format it, minify it, sort keys, remove null values, and view it as an interactive tree with search support.

Does this tool support large JSON files?

Yes, but for best performance in the browser, it is recommended to keep files under 5MB.

Image Tools

Text & Content Tools

Developer & Web Tools

Utility Tools