Paste your JSON. Get it formatted, validated, and syntax-highlighted instantly. 100% client-side.
JSON (JavaScript Object Notation) is a lightweight, text-based data interchange format. It is easy for humans to read and write, and easy for machines to parse and generate.
Raw JSON from APIs or logs is often minified — a single long line with no whitespace. Formatted JSON adds indentation and line breaks, making the structure visible instantly.
The most frequent mistakes are trailing commas (not allowed), single quotes instead of double quotes, unquoted keys, and missing closing brackets. This tool highlights the exact error.
The most common causes are trailing commas after the last item in an array or object, single quotes instead of double quotes around keys and strings, unquoted keys, comments (JSON does not support comments), and missing commas between items. This tool highlights the exact position of syntax errors to help you find and fix them instantly.
No. ToolPry processes everything using JavaScript in your browser via JSON.parse() and JSON.stringify(). Your data never leaves your device. Unlike online alternatives that process JSON on their servers, ToolPry is 100% client-side, making it safe for API keys, tokens, and sensitive configuration files.
Formatting (pretty-printing) adds indentation and line breaks to make JSON human-readable. Minifying removes all whitespace to reduce file size — typically saving 30-60% in bandwidth. Use formatted JSON during development and minified JSON in production APIs and configuration files.
Yes. This tool supports JSON to CSV conversion (for spreadsheet import) and JSON to YAML conversion (for configuration files like Docker Compose and Kubernetes manifests). The conversion runs entirely in your browser.
Since processing happens in your browser, the limit depends on your device memory. Most modern browsers handle JSON files up to 50-100MB without issues. For extremely large files, consider using command-line tools like jq.