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Built with Astro. No React, no framework bloat. Just pure performance.
Core Tools
Formatter
Beautify and indent your JSON with customizable spaces or tabs.
Validator
Check syntax errors and ensure your data meets strict JSON standards.
Minifier
Compress your JSON payloads by removing whitespace and comments.
Diff Viewer
Compare two JSON objects side-by-side to spot changes instantly.
JSON to CSV
Convert nested JSON arrays into flat CSV files for spreadsheet use.
JSON to YAML
Transform your JSON into readable YAML configuration format.
Why JsonStyler
Privacy First
All processing happens locally in your browser. Your data never leaves your machine.
Lightning Fast
Built with Astro for zero runtime overhead. Instant load times, no framework bloat.
Lightweight
Significantly smaller than React alternatives. Pure performance, no unnecessary dependencies.
Built for Devs
Keyboard shortcuts, auto-formatting, syntax highlighting, and instant validation.
Frequently
asked
questions
Quick details about privacy, performance, and behavior.
Is my JSON data secure?
Yes. JsonStyler is a client-side application. All formatting, validation, and conversion happens entirely within your browser. We do not transmit your data to any servers.
What is the maximum file size supported?
The maximum file size is limited only by your browser's memory capabilities. For most modern browsers, files up to 50MB should process smoothly.
How does the validator work?
Our validator checks your input against strict JSON standards (RFC 8259). It identifies syntax errors, missing quotes, trailing commas, and provides exact line numbers for the issues found.
Are there keyboard shortcuts available?
Yes! Use Ctrl/Cmd + Enter to format, Ctrl/Cmd + Shift + M to minify, and Ctrl/Cmd + Shift + C to copy the output.