A Transcoding Proxy for HTML Web Pages: Web Page Sampling and Conversion Evaluation. Andrew Stone CS525m

Worcester Polytechnic Institute 2 Overview Proxy Goal and Scope Related Work Project scope Testing Methodology Demo Conclusions Future Work

Worcester Polytechnic Institute 3 Proxy Goal Reduce data traffic –Get content displayed faster –Save bandwidth (and money) –Reduce power consumption Change content to suit device –Browser properties

Worcester Polytechnic Institute 4 Related Work HTML to WML Transcoding Proxy – iMobile EE – RSVP Browser – Navigating a Mobile XHTML App –

Worcester Polytechnic Institute 5 Project Scope Create component to transcode web pages using HTML Tidy and XML Stylesheets Measure web page size reduction Evaluate web page readability on PC with IE and Firefox and on Windows Mobile 5 Pocket IE

Worcester Polytechnic Institute 6 Issue Get Request Internet Proxy Get Request HTML Tidy XSLT Transform Return Content xHTML Transformed Content

Worcester Polytechnic Institute 7 Web Page Reduction Data Set: 5852 pages from 403 domains –From Paul Timmins and Sean McCormick’s “Characteristics of Today’s Mobile Web Content” HTML Tidy produced 2730 transformed pages –2417 successful XSL Transformations from 266 domains Before –Average Page Size including images: 46.9 KB –Average Page Size excluding images: 23.3 KB After –Average Page Size including images: 43.0 KB –Average Page Size excluding images: 19.4 KB

Worcester Polytechnic Institute 8 Web Page Layout Demo

Worcester Polytechnic Institute 9 Conclusions Real gains are in image manipulation ~50% of web pages have non standard HTML or HTML Tidy Another HTML fixing tool should be tested Image compression should be evaluated