JSAnalyzer: A Web Developer Tool for Simplifying Mobile Pages Through JavaScript Optimizations

06/26/2021
by   Moumena Chaqfeh, et al.
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The amount of JavaScript embedded in Web pages has substantially grown in the past decade, leading to large and complex pages that are computationally intensive for mobile devices. In this paper, we propose JSAnalyzer, an easy-to-use tool that enables Web developers to quickly optimize and generate simpler versions of existing web pages for mobile users. JSAnalyzer can selectively enable or disable JavaScript elements in a page while visually observing their impact, such that non-critical elements can be removed without sacrificing the visual content or the interactive functionality. Our quantitative evaluation results show that JSAnalyzer achieves more than 88 relative increase in performance scoring for low-end mobile phones (i.e., from 32 users shows that JSAnalyzer maintains more than 90 original pages, whereas a developer evaluation study conducted with 23 developers shows that JSAnalyzer scores more than 80 and usability while retaining the page content and functional features. Additionally, we show that JSAnalyzer outperforms state-of-the-art solutions such as JSCleaner and Google AMP.

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