YAML Viewer – View & Validate YAML Online
Open, inspect, search, validate, and explore YAML documents locally with an interactive tree structure, path finder, and depth statistics.
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YAML Viewer Features
Explore, validate, and inspect YAML configurations seamlessly
🌲 Interactive Tree View
Expand and collapse nested mappings, sequences, and scalars with color-coded badges.
📍 Node Path Generator
Click any YAML key or list item to copy its exact path (e.g. $.services.web.ports[0]).
🔍 Real-time Search & Filter
Search keys and values with live matching indicators and visual result highlights.
📊 Indentation & Depth Metrics
Track total objects, list items, total keys, maximum nesting depth, and file size automatically.
❌ Indentation Error Spotter
Detects syntax errors, tab vs space indentation conflicts, and unclosed quotes with line numbers.
🔒 100% Client-Side Privacy
Zero external requests. Your YAML configuration files stay 100% inside your local browser memory.
How to Use YAML Viewer
Input YAML File
Paste raw YAML into the input area, drag and drop a .yaml or .yml file, or click Load Sample YAML.
Explore Structure & Depth
Expand and collapse key mappings and lists. Use Expand All or Collapse All to manage deep trees.
Search, Copy & Download
Search for keys, copy paths to clipboard, and click Download Formatted YAML to save your validated file.
Frequently Asked Questions
Is my YAML data safe when using this YAML Viewer?
Yes, 100%. All YAML parsing, validation, and tree building happen entirely inside your local browser. No data or files are sent to any external server.
Which file extensions are supported?
The tool supports .yaml, .yml, .txt, and raw text input.
How does the YAML Viewer handle indentation and syntax errors?
The built-in parser automatically detects indentation mismatch, unclosed quotes, or invalid colons, highlighting the error line number and detailed syntax message.
Can I copy the path of a specific YAML node?
Yes! Click any key or value in the tree view to reveal its path (e.g. $.services.web.ports[0]) and click Copy Path.