AW JSONPro icon JSONPro
Docs

JSONPro — Formatter & Validator [JSON]

Paste or upload JSON to format, validate, minify, and analyze it. Runs entirely in your browser — your data never leaves your machine.

RAM
0.00 MB
Input
1
Paste JSON or drop a file
Output Tree View Structure
1 
 
 
     
 
  
 
Frequently Asked Questions
 
  

No. JSONPro is a 100% client-side application. Your JSON
                    data is processed entirely within your web browser using
                    JavaScript. No data ever leaves your computer, making it
                    completely safe for API keys, user data, and sensitive
                    configurations.

 
 
  

Since it runs in the browser, it depends on your device's
                    memory. Generally, pasting up to 5-10MB works smoothly. For
                    files larger than that, it's recommended to use the "Browse
                    File" button to load it efficiently rather than pasting
                    directly into the text area.

 
 
  

As soon as you paste content or click Format, the tool
                    attempts to parse the structure. If it encounters a syntax
                    error (like a missing comma or unquoted key), it catches the
                    error and displays a banner with the exact line and position
                    of the mistake.

 
 
  

The Tree View transforms complex, deeply nested JSON into an
                    interactive, collapsible folder-like structure. This makes
                    it much easier to navigate massive API responses by
                    collapsing arrays or objects you don't need to look at right
                    now.

 
 
  

You can convert valid JSON directly to YAML for
                    configuration files. For CSV exports, your JSON must be an
                    array of flat objects (like `[{"name": "Alice", "age":
                    30}]`). Nested structures do not translate well to flat
                    CSV tables, so the converter will let you know if the data
                    structure isn't compatible.