In this talk, we will unveil our journey of optimizing Android WebView to reach performance levels comparable to native pages. We achieved this by refining resource loading, API requests, and page rendering processes. A key breakthrough in our efforts is a feature we dubbed "Native Worker." By harnessing Native Worker to parallelize the execution of JavaScript code, we significantly slashed WebView rendering times. These enhancements led to performance boosts of over 50% for more than 70% of the Web pages within TikTok, with some specific pages even experiencing performance gains exceeding 100%. Join us to explore how these cutting-edge optimizations can bring your WebView performance to the next level.