JSON Studio - Offline

A free, offline, multi-language JSON Editor, Viewer and Converter. JSON Studio is a fast, beautiful JSON editor and viewer built for phones. Paste any JSON and instantly see it syntax highlighted, validated and organized — then format it, explore it as a tree, convert it, query it or save it for later. Everything runs on your device: no account, no upload, your data never leaves your phone. SMART CODE EDITOR • Live syntax highlighting with line numbers • Real-time validation with the exact error line — tap the error chip to jump straight to the problem • One-tap Format (2 spaces, 4 spaces or tabs) and Minify • Format-on-paste: messy JSON becomes readable the moment you paste it • Word wrap, adjustable font size and a live cursor position, size and key counter INTERACTIVE TREE VIEWER • Explore any document as a collapsible tree with color-coded types • Expand or collapse everything with one tap • Search across keys and values and get every matching path • Tap any value to copy it, tap any result to copy its full path POWER TOOLS • Sort keys A–Z through the whole document • Convert JSON to YAML, CSV, XML or TypeScript interfaces • JSONPath queries: $.users[*].email, $..id and more • Compare two JSON documents and see every added, removed and changed path TEMPLATES & SNIPPETS • Start from ready-made templates: user profile, REST response, app config, todo list and more • PRO templates: package.json, GeoJSON, JSON Schema, OpenAPI, feature flags, invoice • Save your own snippets and reload them anytime • Export to a .json file or share the raw text in one tap MADE TO BE LOOKED AT • Eight hand-tuned editor themes, light and dark: Porcelain, GitHub, Solarized, Graphite, One Dark, and more themes Dracula, Monokai and Nord • Real coding fonts including JetBrains Mono, Fira Code and Source Code Pro • Clean, spacious design with settings tucked into elegant bottom sheets • English and Spanish, following your system language automatically Whether you are debugging an API response, cleaning a config file, learning JSON or building an app, JSON Studio turns a chore into something you actually enjoy. Download JSON Studio and give your JSON the editor it deserves.