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TreeJSON

JSON Viewer, Tree View, YAML & XML Formatter

Auto-formats JSON, YAML, and XML responses in your browser into a clean, searchable tree view. Open source, MV3-native, no telemetry, no third-party scripts — built privacy-first as a clean alternative to extensions that injected adware in 2026.

Privacy-first

Features

Auto-format JSON, YAML, and XML by content-type or file extension

Collapsible tree with full-text search, substring highlighting, and click-to-copy on any value

Right-click any node to copy its JSONPath, raw value, or full JSON subtree

Export JSON to CSV, TypeScript types, or JSON Schema in one click

Light, dark, and auto themes — keyboard shortcuts, per-tab and per-origin disable

100% local — zero telemetry, zero analytics, zero servers — MIT licensed