LightBoxTV VAST Tag Tester Beta
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Load a VAST tag

Paste the XML or point to a tag URL
Fetching a URL needs the ad server to allow cross-origin requests (CORS). If it’s blocked, paste the XML instead.
Tag parsed
VPAID detected. VPAID ads run JavaScript in the player, which most CTV / OTT and server-side ad-stitched environments don’t support — this creative may fail to render or be dropped there. For CTV, prefer a simple linear MP4 (or a VAST 4 SIMID interactive file with a video fallback).
Ad

Load a VAST tag to preview the ad and watch its tracking events fire.

0:00 / 0:00
ImpressionQuartileInteractionClick

Event feed

Live 0 fired

Tracking events will appear here as the ad plays.

No tag loaded yet.
No tag loaded yet.
No tag loaded yet.
No tag loaded yet.

VAST Tag Tester · Supports VAST 2.0–4.x inline & wrapper linear ads · Tracking pixels are simulated unless “Fire real tracking pixels” is enabled.