Details for http://www.andrewdefilippis.c...

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C (73)
Current YSlow grade: C (73)
 B (88)
Current Page Speed score: B (88)

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Measurements over time

YSlow metrics
Basic measurements
C (73%)
551KB
57 0 ms
Best practices
Make fewer HTTP requests F (24%)
Use a Content Delivery Network (CDN) F (0%)
Add Expires headers F (0%)
Avoid Empty Image src A (100%)
Compress components with gzip B (89%)
Put CSS at top A (100%)
Put JavaScript at bottom C (70%)
Avoid CSS expressions A (100%)
Make JavaScript and CSS external F (0%)
Reduce DNS lookups F (25%)
Minify JavaScript and CSS D (60%)
Avoid URL redirects A (100%)
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 (95%)
Reduce cookie size A (100%)
Use cookie-free domains F (20%)
Avoid AlphaImageLoader filter A (100%)
Do not scale images in HTML E (50%)
Make favicon small and cacheable A (100%)
Page Speed metrics
Basic measurements
1145KB 5328 ms
625KB 60
B (88%)
Optimize caching
Leverage browser caching B (84%)
Leverage proxy caching A (93%)
Remove query strings from static resources A (97%)
Specify a Vary: Accept-Encoding header A (91%)
Minimize round-trip times
Minimize DNS lookups n/a Minimize redirects A (100%)
Avoid bad requests A (91%)
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 B (85%)
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 (99%)
Remove unused CSS D (65.5%)
Minify JavaScript A (98%)
Minify CSS A (99%)
Minify HTML A (91%)
Defer loading of JavaScript n/a
Optimize images F (0%)
Serve scaled images A (100%)
Serve resources from a consistent URL A (90%)
Optimize browser rendering
Use efficient CSS selectors F (0%)
Put CSS in the document head A (100%)
Specify image dimensions F (9%)
Specify a character set early A (100%)

YSlow measurements history (csv)

Page Speed measurements history (csv)