Verso PadFormat and beautify
Convert minified JSON into consistently indented, readable source while preserving the original data types, property names, array order, and values.
JSON Formatter & Validator — Free Online Tool
JSONValid JSON
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TreeEdit values directly
root:{4}
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:[3]
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Free online JSON formatter, validator, and tree viewer
Format, beautify, minify, validate, sort, and inspect JSON using synchronized source and editable tree views, with browser-local storage and no account.
What is this tool?
Verso Pad JSON Formatter turns compact or difficult-to-read JSON into an indented document while checking that the input follows JSON syntax. The source pane uses Monaco for code-aware editing, and the tree pane displays valid objects and arrays as expandable data. Changes made in the tree are written back to formatted source, so you can use the representation that best suits the task instead of moving between unrelated tools.
Formatting adds consistent indentation without altering keys or values. Minifying removes unnecessary whitespace for transport or compact storage. Sort keys recursively orders object properties while preserving array order, which can make configuration comparisons and code reviews easier. Validation happens as the source changes and reports parsing errors until the document is valid again. The tool does not pretend to validate an application-specific schema; it verifies JSON syntax and data structure.
The editable tree is especially helpful for nested payloads. Expand objects and arrays, edit strings, numbers, and booleans directly, add child values, rename object properties, or remove entries. Because the raw source remains visible, developers can confirm the exact serialized result rather than trusting a hidden transformation. Expand all and collapse all controls make both small API responses and deeply nested configuration files manageable.
JSON content and the chosen filename are stored only in local browser storage for convenient restoration. Opening a local .json file reads it on the device, and Download creates a new file from the current source. Share JSON compresses the document into the fragment of a json.versopad.com link. Fragments are not included in ordinary HTTP requests, so Verso Pad does not need a database of shared documents. Editing a received document creates a local copy for that browser.
Features
Immediate syntax validation
See whether the document is valid JSON as you type and receive the parser’s error message when a quote, comma, bracket, or value is incorrect.
Editable tree view
Explore nested arrays and objects, edit primitive values, rename properties, add children, and delete entries without manually navigating every delimiter.
Minify and sort
Remove formatting whitespace for a compact payload or recursively sort object keys to produce stable, easier-to-compare configuration output.
Private local files
Open and download JSON files without uploading their contents. The current workspace is restored from browser storage on the same device.
URL-fragment sharing
Create a compressed json.versopad.com link for documents up to the sharing limit. A received link loads the shared JSON without replacing existing saved work until edited.
Example usage: Format and inspect an API response
- Paste the API response into the JSON source pane or open a local .json file.
- If the validity indicator reports an error, correct the referenced syntax before continuing.
- Choose Format for readable indentation, then use Expand all to inspect nested objects and arrays.
- Edit a value in the tree, copy the updated JSON, download it, or create a Share JSON link for review.
You end with valid, consistently serialized JSON and can see exactly how each tree edit changes the source. No application schema is assumed, so business-level requirements should still be checked by the receiving system.
Frequently asked questions
Is the JSON sent to a server for formatting?
No. Formatting, parsing, sorting, minifying, tree editing, file opening, and local restoration happen in the browser. Shared JSON is encoded in the link fragment rather than stored as a server document.
What is the difference between formatting and validation?
Validation checks whether the text can be parsed as JSON. Formatting serializes valid data with indentation. Invalid input cannot be reliably formatted until syntax errors are fixed.
Does sorting change array order?
No. Sort keys recursively orders properties in JSON objects, but it preserves the existing order of array items because array position commonly carries meaning.
Can the tool validate JSON Schema?
The current validator checks standard JSON syntax and structure, not a custom JSON Schema contract. Use it to make a payload parseable, then apply your API or application schema separately when required.