JSON Tools — Validate, Format, Diff & Repair
Eight browser-based JSON utilities: syntax validation, formatting, structural diff, escape/unescape, tree viewer, repair and TypeScript type generation. For minify-family compression see minify JSON and beautify JSON.
JSON Validator
Check JSON syntax with precise error locations before you ship configs or API fixtures.
JSON Formatter
Prettify JSON with consistent indentation when readability matters more than byte count.
JSON Diff
Spot structural differences between two JSON documents during reviews or regression checks.
JSON Escape
Escape or unescape string literals for safe JSON embedding — tabs for both directions, no server uploads.
JSON Unescape
Restore escaped JSON string literals to readable text — ideal after copy-paste from configs, APIs or logs.
JSON Tree Viewer
Browse JSON as a collapsible tree with search — ideal for exploring configs and API payloads.
JSON Repair
Fix broken JSON syntax locally — trailing commas, unquoted keys — then validate before shipping.
JSON → TypeScript
Generate TypeScript interfaces or types from JSON samples — client-side, ideal for API fixtures.