Banner Ad Mime-Type Detector

Upload your banner ad to check the image mime-type.

Check 13+ ad quality tests for ad performance — validate against IAB banner ad guidelines

Go ahead, just

drop your ad !

HTML5 Zip

Ad Tag

VAST

Video

Banner

smart_display settings_system_daydream panorama

Drop your banner ads here

PNG, JPG, GIF

Image Mime-Type

The MIME type indicates the nature and format of the image, such as image/png or image/jpeg.

Why do we test it?

Proper MIME type validation ensures that the ad file is correctly identified and can be processed by browsers and ad servers. Mismatches between the file type and its actual content may result in the ad not being displayed at all or being flagged for security concerns.