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External Asset Detector

Upload your HTML5 Ad to check if it loads external assets.

Collect 39+ data points and validate against IAB ad guidelines

HTML5 Zip
Ad Tag
VAST
Video
Image
Audio
 
smart_display settings_system_daydream panorama
Drop your HTML5 Ad here
Format: ZIP
auto_stories
API Docs
Go ahead, try
it yourself !

External Assets

External assets refer to files such as images, scripts, or fonts that are hosted outside the ad's ZIP package and need to be loaded from external servers.

Why do we test it?

External assets can increase load times (due to additional DNS lookups), reduce reliability, and introduce privacy risks. This test ensures all essential assets are included in the ZIP, avoiding dependencies that could hinder performance or violate platform guidelines.