JSON Editor v1.6.1

JSON Editor - v1.6.1

Offline JSON editor with syntax highlighting, real-time validation, and graph visualisation.

Installation

1. Download json-editor-v1.6.1.zip
2. Extract the archive
3. Open index.html in your browser

What's New

🐛 Browser Crash Fix for Large JSON Documents

Fixed a critical issue where Microsoft Edge would crash when loading JSON documents around 14KB or larger.

⚡ Performance Improvements

Event Delegation

• Replaced individual fold icon listeners with event delegation
• Prevents memory leaks from listener accumulation on every editor update

Debounced Updates
Added debouncing to expensive DOM operations:

• Line number updates: 100ms debounce
• Syntax highlighting: 50ms debounce
• Prevents excessive re-rendering during rapid typing

Visualiser Safety Limits
Added safety limits to all graph visualisers to prevent browser crashes:

Visualiser	MAX_NODES	MAX_DEPTH
GraphVisualizer	500	20
D3ForceGraphVisualizer	500	20
D3TreemapVisualizer	500	20
D3SunburstVisualiser	500	20

When limits are exceeded, a warning indicator (⚠️ Limited to 500 nodes) is displayed instead of attempting to render all nodes.

Technical Details

• Memory Management: Single delegated event listener instead of per-icon listeners
• Input Performance: Debounced handlers prevent UI lag during typing
• Graph Safety: Recursive traversal now checks depth and node count limits
• Graceful Degradation: Large documents render partially with clear warning

Full Changelog: v1.6.0...v1.6.1

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