Details for http://www.rivalspot.com/

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C (71)
Current YSlow grade: C (71)
 A (92)
Current Page Speed score: A (92)

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Measurements over time

YSlow metrics
Basic measurements
C (71%)
925KB
69 0 ms
Best practices
Make fewer HTTP requests F (10%)
Use a Content Delivery Network (CDN) F (0%)
Add Expires headers F (0%)
Avoid Empty Image src A (100%)
Compress components with gzip C (78%)
Put CSS at top A (100%)
Put JavaScript at bottom A (100%)
Avoid CSS expressions A (100%)
Make JavaScript and CSS external F (0%)
Reduce DNS lookups C (75%)
Minify JavaScript and CSS F (0%)
Avoid URL redirects A (90%)
Remove duplicate JavaScript and CSS A (100%)
Configure entity tags (ETags) A (100%)
Make AJAX cacheable A (100%)
Use GET for AJAX requests A (100%)
Reduce the number of DOM elements A (100%)
Avoid HTTP 404 (Not Found) error A (100%)
Reduce cookie size A (100%)
Use cookie-free domains F (0%)
Avoid AlphaImageLoader filter A (100%)
Do not scale images in HTML A (90%)
Make favicon small and cacheable A (100%)
Page Speed metrics
Basic measurements
1551KB 7149 ms
919KB 75
A (92%)
Optimize caching
Leverage browser caching E (58%)
Leverage proxy caching B (80%)
Remove query strings from static resources D (61%)
Specify a Vary: Accept-Encoding header D (69%)
Minimize round-trip times
Minimize DNS lookups n/a Minimize redirects A (93%)
Avoid bad requests A (100%)
Combine external JavaScript n/a
Combine external CSS n/a Combine images using CSS sprites A (100%)
Optimize the order of styles and scripts A (100%)
Avoid document.write n/a
Avoid CSS @import A (100%)
Prefer asynchronous resources A (100%)
Parallelize downloads across hostnames n/a
Minimize request overhead
Minimize request size A (100%)
Serve static content from a cookieless domain n/a
Minimize payload size
Enable compression A (97%)
Remove unused CSS D (61.7%)
Minify JavaScript B (83%)
Minify CSS A (92%)
Minify HTML A (100%)
Defer loading of JavaScript n/a
Optimize images C (75%)
Serve scaled images A (100%)
Serve resources from a consistent URL A (92%)
Optimize browser rendering
Use efficient CSS selectors F (38.5%)
Put CSS in the document head A (100%)
Specify image dimensions F (14%)
Specify a character set early A (100%)

YSlow measurements history (csv)

Page Speed measurements history (csv)