UC Browser uses proxy servers to compress web pages before sending them to users. While primarily a mobile app, UCWeb also offers a Microsoft Windows desktop version (there is no macOS version). UC Browser is available as both an Android app and an iOS app, and is also available on several other older or discontinued mobile operating systems including BlackBerry OS, Symbian, and Windows Phone. Additional features of the browser include cloud acceleration, multi-file format downloading, HTML5 web app and cloud syncing features, and 'fast download', a feature that downloads files in multiple parts simultaneously. In particular, the browser is unique in its use of proxy servers, which run data through UCWeb servers before sending it to the user's device, enabling data compression but also posing privacy risks. It is known for its small app size and data compression technology, making it popular in emerging markets where people tend to have mobile phones with more limited device memory and internet bandwidth. UC Browser is a cross-platform web browser primarily targeted at mobile phones.

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