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JSON Tools

JSON Utilities

Secure web-native formatters, validators, repair systems, and diff tools for JSON developer payloads.

JSON Formatter & Minifier

Prettify, space-indent, and alphabetically key-sort JSON objects client-side. Includes one-click minification.

JSON Schema Validator

Strict RFC 8259 syntax validation. Highlight nesting depth, element counts, and precise character error lines.

JSON Syntax Repair

Auto-fix syntax mistakes (missing quotes, trailing commas, comments, single quotes) using advanced heuristics.

Visual JSON Compare

Alphabetically normalize keys recursively and run a visual side-by-side line diff on two JSON structures.