VAST Video File Extension Detector

Scan Your VAST Video to detect the video file extension (MP4, WebM).

Check 38+ ad quality tests for ad performance — validate against IAB VAST ad guidelines

Go ahead, just

copy/paste your tag !

HTML5 Zip

Ad Tag

VAST

Video

Image

Audio

Validate against:

Ad Spec: IAB Ad Guidelines

arrow_drop_down

The file extension of the video file, for example: mp4.

Publishers commonly have a restricted number of video file types they accept.