VAST Tag Validator
Use this tool to validate your VAST tags by entering a VAST tag URL or VAST XML content. The validator will analyze the structure of your VAST XML, check for common errors, and provide insights to help you debug any issues.
Other Ad Validators
VAST Structure Visualization
Transform complex VAST XML into intuitive visual diagrams. See every component, connection, and dependency at a glance.
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VAST Structure Visualization

How Structure Visualization Works
Parse VAST Structure
We parse your VAST XML to identify all elements: ads, creatives, media files, tracking events, companions, and API frameworks.
Follow Wrapper Chains
If your VAST contains wrappers, we automatically follow each redirect (up to 5 levels) and fetch the complete chain to show the full path from initial wrapper to final InLine creative.
Build Node Diagram
Each component becomes an interactive node with color-coding, status indicators, and hierarchical positioning. Edges show relationships and data flow.
Optimize Layout
Our layout algorithm positions nodes for maximum clarity, organizing media files in grids, centering important nodes, and maintaining clear visual hierarchy throughout.
Node Types Reference
VAST/VMAP Root
Top-level container node
Ad Container
Individual ad element
Wrapper
Redirect to another VAST
InLine Creative
Final ad creative
Media Files
Video assets
Tracking Events
Analytics pixels
Key Features
- Interactive node-based diagram with React Flow
- Hierarchical visualization of VAST XML structure
- Complete wrapper chain visualization with animated redirects
- VMAP support with ad break timeline visualization
- Click any node to view its XML snippet
- Media files organized in grid layout (4 per row)
- Tracking events with dashed connector lines
- Companion ads with dimension display
- API framework detection (VPAID, SIMID, OMID)
- Color-coded status indicators (passed/failed/warning)
- Automatic layout optimization for clarity
- Support for unlimited wrapper depth
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