File Contents Check

Upload Your HTML5 Ad to check if all file types are supported in the Zip bundle.

Check 40+ ad quality tests for ad performance — validate against IAB HTML5 ad guidelines

Go ahead, just

drop your ad !

HTML5 Zip

Ad Tag

VAST

Video

Image

Audio

smart_display settings_system_daydream panorama

Drop your HTML5 creatives here

ZIP Archive

Validate against:

Ad Spec: IAB Ad Guidelines

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File Contents Check

Checks that all files in the Zip archive use supported file types only, like png, jpg, html css, js, etc. Unsupported file extensions like exe, php, bat, etc will cause this test to fail.

Why do we test it?

This ensures the creative package meets ad platform requirements and avoids rejected uploads or security flags.