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External Asset Detector

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

Check 39+ ad quality tests for ad performance and validate against IAB HTML5 ad guidelines

Go ahead, just
drop your ad !
HTML5 Zip
Ad Tag
VAST
Video
Banner
smart_display settings_system_daydream panorama
Drop your HTML5 creatives here
ZIP Archive

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.