JSON Master
Volodymyr Sichka
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About this app
JSON Master is a fast, native JSON editor for iPhone, iPad and Mac, built around what you do with JSON all day: find a value, copy its path, copy a branch, and understand what a field really contains. The document is shown two ways — as a tree and as highlighted source — and both are the same file. The tree is for reading and restructuring, the source for fixing what does not parse. FIND YOUR WAY • Command palette (⌘K): every command by name and a fuzzy jump to any node • Breadcrumbs, plus back and forward after every jump • Search over keys and values; matching branches open by themselves • Full keyboard control on Mac and iPad READ • A tree with type badges, item counts, indent guides and previews of collapsed objects • Highlighted source that keeps working even when the file does not parse • A broken file explains itself: the exact line and column, one tap away • One-tap repair for almost-JSON: comments, trailing commas, single quotes • Large files open in the background without freezing COPY • Paths in six notations: dot, JSONPath, brackets, jq, Swift and JSON Pointer • Values, whole branches (formatted or minified), keys and key-value pairs UNDERSTAND The inspector recognises Unix timestamps, JWT tokens, base64, ISO 8601 dates, URLs and integers too large for JavaScript — and shows what they mean. TOOLS • Format, minify, sort keys, unwrap JSON embedded in strings • JSONPath queries with results as you type • Structural compare: reordered keys and reindentation are not differences • Generate Swift Codable, TypeScript interfaces or JSON Schema • A summary that flags duplicate keys, unsafe integers and JSON hidden in strings • Export as JSON, minified JSON or CSV EVERYWHERE • Tree and source side by side on Mac and iPad • Four themes: Midnight, Graphite, Amber CRT and Daylight • Seven languages: English, German, French, Ukrainian, Spanish, Japanese and Portuguese. The app follows your system language or the one you choose for it No account, no ads, no tracking. Privacy Policy: https://vybgss.github.io/json-master-docs/privacy-policy.html Terms of Use: https://www.apple.com/legal/internet-services/itunes/dev/stdeula/
What's new
Version 1.4 · Nov 4, 2026
Bug fixes and performance improvements.
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