ToolForge

Visionneuse d'arbre JSON

JSON tree viewer: render JSON as collapsible color-coded tree with expand and collapse for deep data for APIs, with one-click copy and offline.

Mode d'emploi

Collez du JSON, cliquez sur Rendre, puis sur les nœuds pour déplier/replier.

Overview

JSON Tree Viewer is a Developer tool. Render JSON as collapsible color-coded tree with expand and collapse for deep data for APIs, with one-click copy and offline. It runs 100% in your browser with no upload, so you get instant results with privacy. Whether you need a quick answer or batch processing with precise control, you can enter, validate and export in seconds. The UI is responsive on mobile, tablet and desktop and supports one-click copy.

Use cases

  • Daily use of JSON Tree Viewer: Paste JSON, click Render to build a tree, and click nodes to expand or collapse. — enter and get instant results without manual lookup.
  • One-click copy keeps results ready to save, check or share with family and pros.
  • Use JSON Tree Viewer offline or on poor network — all calculations stay local and private.
  • Test regex with highlights
  • Escape code for string literals

How to use

  1. 1 Paste JSON, click Render to build a tree, and click nodes to expand or collapse..
  2. 2 Pick action and options
  3. 3 Fix highlighted errors
  4. 4 Copy or export

Highlights

  • Local & private: processing stays in your browser
  • Live validation with tolerant parsing
  • One-click copy and export for docs, code or sheets
  • Batch and offline support under poor network

Notes

  • Disable live validation for large files
  • Watch greedy vs lazy regex
  • Strict JSON disallows comments/trailing commas

FAQ

Why invalid?
Trailing commas, single quotes or BOM often cause it.
Offline?
Yes, parsing is local.
How is JSON Tree Viewer different?
It runs locally with a focus on speed and privacy, plus tolerant parsing for “json viewer” and one-click copy for reuse.
Can I use results in official reports?
Use it as a working draft and cross-check with authoritative sources; keep the exported log and parameters for traceability.
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Tous les calculs s’exécutent localement dans votre navigateur ; aucune donnée n’est envoyée.