WURFL

WURFL (Wireless Universal Resource File) is a database containing information about mobile devices, including their capabilities and specifications. It is widely used in the advertising industry to target ads based on the capabilities of the user`s device, ensuring a better user experience and optimizing ad delivery. WURFL helps advertisers and publishers identify the best ad formats, sizes, and content for specific devices, improving ad performance and user engagement. This data is also used for mobile website optimization, ensuring websites are displayed correctly and perform optimally on various devices.

Website: https://www.wurfl.io