Analysis and Recommendations
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- TOTAL_HTML - Congratulations, the total number of HTML files on this page (including the main HTML file) is 2 which most browsers can multithread. Minimizing HTTP requests is key for web site optimization. Y
- TOTAL_OBJECTS - Warning! The total number of objects on this page is 21 which by their number will dominate web page delay. Consider reducing this to a more reasonable number. Above 20 objects per page the overhead from dealing with the actual objects (description time and wait time) accounts for more than 80% of whole page latency. See Figure II-3: Relative distribution of latency components showing that object overhead dominates web page latency in Website Optimization Secrets for more details on how object overhead dominates web page latency. Combine, refine, and optimize your external objects. Replace graphic rollovers with CSS rollovers to speed display and minimize HTTP requests. Consider using CSS sprites to help consolidate decorative images. Using CSS techniques such as colored backgrounds, borders, or spacing instead of graphic techniques can reduce HTTP requests. Replace graphic text headers with CSS text headers to further reduce HTTP requests. Finally, consider optimizing parallel downloads by using different hostnames or a CDN to reduce object overhead.
- TOTAL_IMAGES - Caution. You have a moderate amount of images on this page (14 ). Consider using fewer images on the site or try reusing the same image in multiple pages to take advantage of caching. Using CSS techniques such as colored backgrounds, borders, or spacing instead of graphic techniques can help reduce HTTP requests.
- TOTAL_CSS - Congratulations, the total number of external CSS files on this page is 1 . Because external CSS files must be in the HEAD of your HTML document, they must load first before any BODY content displays. Although they are cached, CSS files slow down the initial display of your page. Remember to place CSS files in the HEAD and JavaScript files at the end of the BODY to enable progressive display.
- TOTAL_MULTIM - Congratulations, the total number of external multimedia files on this page is 1 .
- TOTAL_SIZE - Warning! The total size of this page is 1333687 bytes, which will load in 270.00 seconds on a 56Kbps modem. Consider reducing total page size to less than 100K to achieve sub 20 second response times on 56K connections. Pages over 100K exceed most attention thresholds at 56Kbps, even with feedback. Consider optimizing your site with Website Optimization Secrets, Speed Up Your Site or contacting us about our optimization services.
- TOTAL_SCRIPT - Caution. The total number of external script files on this page is 3 , consider reducing this to one or two. Combine, refactor, and minify to optimize your JavaScript files. Ideally you should have one (or even embed scripts for high-traffic pages) on your pages. Consider suturing JavaScript files together at the server to minimize HTTP requests. Placing external JavaScript files at the bottom of your BODY, and CSS files in the HEAD enables progressive display in XHTML web pages.
- HTML_SIZE - Congratulations, the total size of this HTML file is 35646 bytes, which less than 50K. Assuming that you specify the HEIGHT and WIDTH of your images, this size allows your HTML to display content in under 10 seconds, the average time users are willing to wait for a page to display without feedback.
- IMAGES_SIZE - Warning! The total size of your images is 803409 bytes, which is over 100K. Consider switch graphic formats to achive smaller file sizes (from JPEG to PNG for example). Finally, substitute CSS techniques for graphics techniques to create colored borders, backgrounds, and spacing.
- SCRIPT_SIZE - Caution. The total size of your external scripts is 18424 bytes, which is above 8K and less than 20K. Consider optimizing your scripts and eliminating features to reduce this to a more reasonable size. You can substitute CSS menus for JavaScript-based menus to minimize or even eliminate the use of JavaScript.
- CSS_SIZE - Congratulations, the total size of your external CSS is 1281 bytes, which is less than 8K.
- MULTIM_SIZE - Warning! The total size of your external multimedia is 474927 bytes, which is over 30K. Consider optimizing your multimedia files for size, or replacing them with lower-bandwidth alternatives, or eliminating them altogether.
