Blahker 巴拉剋 is an ad blocker extension specifically designed for Safari browser users. It currently supports popular Taiwanese websites such as Liberty Times, Apple Daily, China Times, United Daily News, Central News Agency, NOWnews, Sina, Eastern Broadcasting, CommonWealth Magazine, Sanlih E-Television, Mobile01, PIXNET, Xuite, TechOrange, and more. The extension is regularly updated and welcomes user submissions of new ad-heavy websites. Blahker utilizes an iOS-specific ad blocking API, ensuring privacy and security.

Encountering intrusive overlay ads while browsing websites can disrupt the user experience. Blahker aims to combat these irrelevant and annoying overlay ads that obstruct content, hence the name derived from merging "blah" and "blocker." It focuses on improving browsing by eliminating obstructive ads rather than removing all advertisements, recognizing the importance of ads for website revenue. Blahker is open-source and encourages collaboration, with interested individuals invited to check the GitHub for more information.