json-master

Beautify & Explore JSON with folding, jq-style paths, navigation, and lookups.

### JSON Master — Fast, keyboard-first JSON viewer & navigator - At-a-glance structure: Fold/unfold, highlight current section, and skim with a compact minimap - Keyboard-first navigation: Path palette, jump across siblings/children/parents, instant root jump - Smart preview & copy: Inline previews and pretty-copy for JSON/XML/HTML; copy “current section” or “lookup” values/shape - Built‑in help: Quick keyboard guide via an in-page overlay - Custom input: Paste any JSON and render instantly (great for testing) - Context tooltips: Timestamps, GeoIP, etc. (toggle in settings) - Minimal permissions: Local settings only (storage) ### Highlights - Structure & navigation - Sticky header shows path/size/preview; section highlight for context - Minimap to scan hierarchy (auto-hides on small screens) - Path palette & lookups - Dot-path autocomplete from a palette - Bookmark frequent paths as lookups; jump with Alt/Option + 1..9 - Copy lookup aggregate (values) or structure (shape) - Smart copy - Detects and pretty-prints JSON/XML/HTML on copy (Shift = beautified) - Copy current section (root = full JSON) - Help & settings - On-screen help overlay with shortcuts - Popup settings: collapse, tooltips, timestamp format/timezone, more - Changes apply live to open tabs ### Default shortcuts - Cmd/Ctrl + P: Open path palette - Alt/Option + 1..9: Jump to saved lookup #1..#9 - Cmd/Ctrl + O: Open custom JSON input (paste + render) - Alt + Up/Down: Previous/next sibling - Cmd/Ctrl + Up/Down: First/last sibling - Cmd/Ctrl + Alt + [ / ]: Collapse/expand current section - Cmd/Ctrl + C: Copy current section (Shift = beautified) - Cmd/Ctrl + Shift + ?: Toggle help - Esc: Go to root (.) or close dialogs ### How it works - Non-intrusive overlay renders on top of the original JSON - Handles `<pre>`-only pages and `application/json` responses - Performance-conscious: visibility/resize/scroll work is batched and throttled ### Privacy & permissions - Uses only the storage permission for local settings - Optional GeoIP tooltip may call an external service (can be disabled) ### Perfect for - Engineers who inspect JSON payloads/logs in the browser - Anyone who wants fast, keyboard-driven JSON exploration - Teams that rely on saved paths (lookups) for repeatable analysis