Is my JSON uploaded to PRBLEM?

No. Formatting, validation and analysis run locally in your browser. PRBLEM does not receive the JSON you paste or open.

Can this tool show where invalid JSON is broken?

Yes. When the browser parser provides an error position, PRBLEM reports the corresponding line and column and shows the affected line.

Can I minify or sort JSON keys?

Yes. You can minify valid JSON or recursively sort object keys, then copy or download the result.

Developer utilityLocalNo upload

Format, validate, minify and inspect JSON in your browser. Find parsing errors, explore a tree view and export clean JSON without sending your data to PRBLEM.

JSON input

Paste JSON, type it or open a local .json file.

Waiting for JSONLn 1 · Col 1

Formatted output

Syntax view, collapsible tree or JavaScript object.

Valid JSON will appear here with syntax highlighting.

Invalid JSON

Characters

Bytes

0 B

Keys

Values

Depth

Type

—

Local by design. Your JSON stays in this browser tab. Formatting, validation, tree rendering, sorting and downloads are performed with local JavaScript; PRBLEM does not receive the content.

JSON FORMATTER GUIDE

Clean and inspect JSON without uploading your data

Use PRBLEM to prettify API responses, validate configuration files, shrink JSON for transport, inspect nested structures and quickly locate syntax problems.

Paste or open JSON

Add JSON in the editor or choose a local .json file. Files are read in your browser.

Validate and format

Beautify, minify, recursively sort keys or inspect the exact line and column of parse errors.

Inspect and export

Switch between syntax, tree and JavaScript object views, then copy or download the result.

Included tools

BeautifyMinifyValidateTree viewSort keysEscapeJS objectDownload

FAQ

Does PRBLEM upload or store my JSON?

No. The JSON is processed locally by JavaScript in your browser tab.

Can it locate invalid JSON?

When the browser parser exposes a position, the tool converts it to a line and column and shows the affected line.

What does Sort keys do?

It alphabetically sorts keys in every object recursively. Array order is preserved.