JSON Formatter

Beautify and format JSON with stable indentation and optional key sorting.

Fast processing • Browser-based • Easy copy and download

Workspace

Paste data, upload a file, and produce clean output instantly.

Indent

Sort keys (deep)

Input

Output

Processed Locally

Your file never leaves your device. Everything is processed in your browser — we never see or store your data.

Frequently Asked Questions

JSON Minifier

Minify JSON by removing whitespace while preserving valid structure.

JSON Validator

Validate JSON syntax with clear, human-friendly error messages.

JSON Viewer

View JSON as an expandable tree with a raw toggle for quick inspection.

JSON Compare / Diff

Compare two JSON inputs and generate a best-effort diff report (with stable key sorting).