VAST Tag Tester

What is VAST Tag Tester?

VAST Tag Tester is a free online tool designed to validate and troubleshoot video ad tags that conform to VAST 2.0 through 4.3 standards. It allows users to test VAST tag URLs, inspect tracking pixels, resolve wrapper chains, and identify ad errors quickly. The platform helps publishers, ad operations teams, and developers ensure their video ads are compliant and functioning correctly before deployment.

Who is it for?

The tool is intended for ad ops professionals, publishers, and developers working with programmatic video advertising. It is useful for teams managing ad campaigns, troubleshooting ad delivery issues, and ensuring XML compliance across various ad servers and platforms.

How is it priced?

VAST Tag Tester is completely free to use. No sign-up or account is required. For more details, visit the website.

How does it compare to alternatives?

This platform specializes in validating VAST XML tags, following industry standards, and automatically resolving wrapper chains. It offers comprehensive error detection, tracking pixel inspection, and media file analysis. Users should compare features like support for different VAST versions, ease of use, and platform compatibility when evaluating alternatives.

Key features

• Supports VAST 2.0 to 4.3 XML validation
• Automatically resolves wrapper chains up to 5 levels
• Extracts and audits tracking pixels and URLs
• Validates ad XML against IAB specifications
• No account or sign-up required
• Operates entirely in-browser for instant testing

Use cases

Ad operations teams paste a VAST URL to verify ad compliance before campaign launch.

Developers troubleshoot ad delivery issues by inspecting tracking pixels and resolving wrapper chains.

Publishers validate ad tags to prevent errors that could impact revenue or user experience.