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Prettify, inspect, compare, convert, validate, and extract JSON from real-world logs - all locally in a native desktop app.
If you like JsonStudio, please give it a star ⭐.
Format clipboard JSON, edit and reorganize data in Tree View, edit arrays in Grid View, and extract JSON from logs.
JsonStudio is built for JSON in real development work: API requests and responses, deeply nested data, escaped strings, JSON5-like snippets, JSONL/NDJSON, and log lines where plain text and JSON are mixed together.
- Local-first: works offline, offers convenient keyboard shortcuts, and keeps sensitive data on your machine.
- Flexible input: handles standard JSON, JSON5-like snippets, escaped JSON strings, repairable JSON fragments, JSONL/NDJSON, and mixed log text.
- Visual editing: edit and reorganize data in Tree View, or inspect arrays in Grid View.
- Daily tools in one place: query, diff, convert, validate with schema, and generate typed code.
- Desktop workflow: multi-tabs, file drag-and-drop, format clipboard, shortcuts, unsaved-change prompts, and optional auto-save.
| Capability | Online Tools | JsonStudio |
|---|---|---|
| Offline / no internet required | ❌ | ✅ |
| Large JSON data performance | ❌ | ✅ |
| Multi-tab editing | ❌ | ✅ |
| Editable Tree View & Grid View, with drag-and-drop | ❌ | ✅ |
| Log-like text JSON extraction | ❌ | ✅ |
| JSON5 parsing and formatting | ❌ | ✅ |
| JSONL file viewing | ❌ | ✅ |
| Auto-save and reusable file tabs | ❌ | ✅ |
| Global shortcuts & custom keybindings | ❌ | ✅ |
| Local file operations | ❌ | ✅ |
| Custom settings for theme, font, spacing, and shortcuts | ❌ | ✅ |
Download the installer for your platform from GitHub Releases, or install from the command line:
- Homebrew (macOS)
brew install --cask sundegan/tap/json-studio- curl (macOS and Linux)
curl -fsSL https://jsonstudio.js.org/install.sh | sh- PowerShell (Windows)
irm https://jsonstudio.js.org/install.ps1 | iex- npm (macOS, Windows and Linux)
Requires Node.js 20 or later:
# Option 1
npx --yes @sundegan/jsonstudio install
# Option 2
npm install -g @sundegan/jsonstudio- Download the DMG for your Mac architecture (
aarch64for Apple Silicon,x64for Intel). - Open the DMG and drag
Json Studio.appinto Applications. - On first launch, if macOS blocks the app because it is from an unidentified developer, right-click
Json Studio.appand choose Open, or allow it in System Settings > Privacy & Security.
Current macOS builds are not Apple Developer ID notarized, so the first launch may require manual confirmation.
If JsonStudio helps your daily JSON work, a star ⭐ would mean a lot.