Show Slow is an open source tool that helps monitor various website performance metrics over time. It captures the results of YSlow and Page Speed rankings and graphs them, to help you understand how various changes to your site affect its performance.

www.ShowSlow.com is a demonstration site that continuously measures the performance of a few reference web pages. It also allows for public metrics reporting.

If you want to make your measurements publicly available on this page, see the instructions in Configuring YSlow / Page Speed. If you want to keep your measurements private, download Show Slow from the SVN repository and install it on your own server.

You can ask questions and discuss ShowSlow in our group http://groups.google.com/group/showslow or just leave feedback at http://showslow.uservoice.com


Timestamp YSlow gradePage Speed scoreURL
2013-05-12 18:25:32 C (73)
no data
http://brandchatter.plexify.com/brandchatter/view/#/
2013-05-07 10:25:35 C (75)
no data
http://www.orbitz.com/
2012-12-12 20:52:36 C (78)
no data
http://www.plexify.com/save?complete=true&url=http%3A%2F%2Fwww.huffingtonpost.com%2F2012%2F12%2F12%2...
2012-12-12 20:52:31 B (82)
no data
http://www.plexify.com/save?url=http://www.huffingtonpost.com/2012/12/12/12-12-12-concert-hurricane-...
2012-12-12 20:42:08 C (75)
no data
http://www.plexify.com/save?complete=true&url=http%3A%2F%2Fwww.latimes.com%2Fentertainment%2Fmusic%2...
2012-12-12 20:41:59 B (81)
no data
http://www.plexify.com/save?url=http://www.latimes.com/entertainment/music/posts/la-et-ms-121212-con...
2012-12-12 20:41:03 C (78)
no data
http://www.plexify.com/save?complete=true&url=http%3A%2F%2Fwww.121212concert.org%2F&plex=SaveTheShor...
2012-12-12 20:40:37 B (82)
no data
http://www.plexify.com/save?url=http://www.121212concert.org/#
2012-12-12 20:15:25 C (73)
no data
http://www.plexify.com/save?url=http://www.121212concert.org/
2012-12-12 05:19:25 B (80)
C (76)
https://runsignup.com/
2012-12-12 05:14:17 B (85)
A (91)
https://www.runningwall.com/free-online-race-registration
2012-12-12 05:13:49 no data
A (91)
http://www.runningwall.com/
2012-12-12 05:13:12 B (85)
A (91)
https://www.runningwall.com/
2012-12-12 05:11:57 no data
B (88)
https://www.google.com/url?sa=t&rct=j&q=&esrc=s&source=web&cd=9&ved=0CJcBEBYwCA&url=https://www.runn...
2012-12-12 05:11:09 C (72)
A (92)
http://www.runreg.com/
2012-12-12 05:10:41 C (75)
F (25)
http://www.racesonline.com/
2012-12-12 05:10:13 no data
F (34)
http://www.google.com/url?sa=t&rct=j&q=&esrc=s&source=web&cd=5&ved=0CHkQFjAE&url=http://www.racesonl...
2012-12-12 05:06:38 no data
C (76)
http://runsignup.com/
2012-12-12 05:05:24 no data
C (77)
https://www.runsignup.com/
2012-12-12 05:04:24 C (71)
B (86)
http://www.runnersworld.com/races-places/races
2012-12-12 05:03:52 D (67)
B (84)
http://www.active.com/
2012-12-12 05:03:14 no data
B (85)
http://www.google.com/url?sa=t&rct=j&q=&esrc=s&source=web&cd=1&ved=0CFAQFjAA&url=http://www.active.c...
2012-11-25 09:23:09 no data
A (90)
http://pinterest.com/superfoodsnacks/
2012-11-25 09:22:41 no data
B (86)
http://blog.seattlepi.com/naturalmedicine/2011/05/30/try-these-superfood-snacks/
2012-11-25 09:21:23 no data
C (79)
http://www.mnn.com/food/healthy-eating/blogs/grab-and-go-superfood-snacks
2012-11-25 09:19:15 no data
B (82)
http://www.self.com/fooddiet/blogs/eatlikeme/2012/03/drop-10-snack-swaps.html
2012-11-25 09:18:17 no data
B (80)
http://www.superfoodsnacks.com/
2012-11-25 09:13:47 no data
A (95)
http://www.myspace.com/
2011-09-13 14:08:27 E (53)
no data
http://www.myyearbook.com/apps/home/
2011-09-10 18:48:52 E (50)
no data
http://test.myyearbook.com/apps/home/
2011-06-28 05:51:10 no data
B (89)
http://hbr.org/2011/07/the-big-idea-the-age-of-hyperspecialization/ar/4
2011-03-18 05:52:23 C (77)
B (84)
http://960.gs/
2011-03-15 10:26:33 D (66)
no data
http://www.myyearbook.com/apps/home
2011-03-14 17:03:30 C (78)
A (91)
http://www.movieinsider.com/m8790/bill-cunningham-new-york/
2011-03-14 17:03:15 D (67)
B (86)
http://www.imdb.com/title/tt1621444/
2011-03-14 17:02:54 B (80)
no data
http://www.zeitgeistfilms.com/billcunninghamnewyork/
2011-03-14 17:02:49 C (72)
no data
http://topics.nytimes.com/topics/reference/timestopics/people/c/bill_cunningham/index.html
2011-03-14 16:53:29 C (75)
A (91)
http://www.movieinsider.com/m8511/the-butcher-the-chef-and-the-swordsman/
2011-03-14 16:52:47 B (83)
no data
http://en.wikipedia.org/wiki/The_Butcher,_the_Chef_and_the_Swordsman
2011-03-14 16:52:40 D (67)
no data
http://www.imdb.com/title/tt1722513/
2011-03-14 14:40:26 C (79)
A (93)
http://www.movieinsider.com/m7384/war-horse/
2011-03-14 14:40:24 D (67)
B (86)
http://www.imdb.com/title/tt1568911/
2011-03-14 14:39:05 C (72)
no data
http://war-horse.movie-trailer.com/
2011-03-14 14:39:05 F (44)
no data
http://teaser-trailer.com/war-horse-movie/
2011-03-14 14:38:59 D (66)
no data
http://collider.com/war-horse-movie-image/80052/
2011-03-13 09:01:09 C (78)
C (77)
http://www.openwebdesign.org/
2011-03-13 09:01:02 B (84)
B (85)
http://blog.html.it/layoutgala/
2011-03-13 09:00:55 C (75)
B (83)
http://templatenavigator.com/
2011-03-13 09:00:48 B (83)
B (89)
http://www.oswd.org/
2011-03-13 09:00:38 C (75)
B (87)
http://www.designvitality.com/blog/2007/07/the-open-source-web-design-toolbox-100-tools-resources-an...
2011-03-11 17:20:42 D (68)
B (85)
http://www.mobileindesign.com/buildsite/siteInfo.action
2011-03-11 17:18:24 B (81)
A (91)
http://www.wirenode.com/
2011-03-11 17:17:55 B (81)
A (90)
http://mobify.me/
2011-03-11 17:17:01 C (75)
no data
http://www.mofuse.com/
2011-03-11 17:15:56 C (76)
B (81)
http://mippin.com/appfactory/
2011-03-11 17:15:03 B (80)
B (87)
http://bmobilized.com/index.php
2011-03-04 10:13:49 D (65)
no data
http://test.socialtheater.com/view/1750?userid=0
2011-03-01 13:22:15 D (64)
no data
http://www.myyearbook.com/?mysession=Z3JvdXBzX2dyb3VwZGV0YWlscyZncm91cGlkPTExMTY4NCZ1c2VyaWQ9MjEyNTI...
2011-03-01 12:32:54 B (82)
no data
http://www.myyearbook.com/apps/messages/notification
2011-03-01 12:32:18 B (88)
no data
http://m.myyearbook.com/mobile/chatterprofile/21252531/
2011-03-01 12:32:14 B (87)
no data
http://m.myyearbook.com/mobile/chatter/
2011-03-01 12:31:28 B (81)
no data
http://www.myyearbook.com/?mysession=cmVnaXN0cmF0aW9uX3JlZ2lzdHJhdGlvbiZyZWZlcnJlcj0wJm9sZD0x
2011-02-27 10:56:20 B (82)
no data
http://www.youtube.com/watch?v=6dkH4NMzdL4
2011-02-27 10:54:09 B (84)
no data
http://en.wikipedia.org/wiki/Beyblade
2011-02-27 10:53:11 C (70)
no data
http://www.hasbro.com/beyblade/en_US/
2011-02-27 10:52:56 no data
B (88)
http://www.beyblade.com/
2011-02-27 10:52:51 B (84)
no data
http://www.beyblade.com/splash.aspx
2011-02-23 07:57:54 B (81)
A (90)
http://www.chicagoforrahm.com/
2011-02-22 19:45:48 F (37)
B (87)
http://www.allfacebook.com/facebook-offers-open-source-insights-code-for-developers-2010-06
2011-02-22 19:44:30 B (80)
B (82)
http://www.insidefacebook.com/2010/04/23/facebook-overhauls-page-and-app-insights-adds-domain-analyt...
2011-02-22 19:42:30 B (81)
B (85)
http://stackoverflow.com/questions/4851547/facebook-insights-api-difference-between-items-ending-in-...
2011-02-22 19:33:31 A (91)
A (93)
http://www.facebook.com/help/?page=1106
2011-02-21 20:24:12 B (89)
B (89)
http://www.dealigg.com/
2011-02-21 20:23:54 D (67)
B (86)
http://sphinn.com/
2011-02-21 20:23:19 C (71)
B (84)
http://www.treehugger.com/
2011-02-21 20:22:57 D (66)
C (75)
http://www.bestofindya.com/news/index.php
2011-02-21 20:22:46 C (77)
C (74)
http://www.babblestorm.co.uk/
2011-02-21 20:22:35 B (80)
C (76)
http://www.ziki.com.au/
2011-02-21 19:00:38 B (84)
C (77)
http://en.wikipedia.org/wiki/HtmlUnit
2011-02-21 19:00:15 B (83)
B (85)
http://www.baccoubonneville.com/blogs/index.php/eclipse/2005/12/04/htmlunit-tests-with-eclipse-and-a...
2011-02-21 19:00:03 B (82)
C (76)
http://www.ohloh.net/p/HtmlUnit
2011-02-21 18:59:53 A (90)
A (90)
http://www.junit.org/node/31
2011-02-21 18:59:27 B (87)
B (80)
http://htmlunit.sourceforge.net/
2011-02-21 18:59:17 B (85)
A (95)
http://mguillem.wordpress.com/category/htmlunit/
2011-02-21 18:56:53 C (72)
no data
http://www.plexify.com/htmlUnit/plain/
2011-02-21 07:37:46 B (84)
A (93)
http://promdress.net/checklists/index.html
2011-02-21 07:37:34 C (78)
B (89)
http://www.prom-hairstyles.org/planning/planning3.htm
2011-02-21 07:37:24 B (87)
A (95)
http://www.promdressshop.com/Info/DayOfPromChecklist.aspx
2011-02-21 07:37:14 F (41)
B (85)
http://www.perfectpromresource.com/2010/01/2010-girls-prom-checklist.html
2011-02-14 18:42:55 B (81)
no data
http://vimeo.com/15977816
2011-02-14 18:41:39 C (78)
C (79)
http://www.ramah.org/
2011-02-14 18:39:45 C (70)
B (87)
http://www.nfty.org/
2011-02-14 18:38:41 C (76)
B (89)
http://www.jccmaccabiisrael.org/
2011-02-14 18:37:53 C (76)
C (79)
http://bbyo.org/
2011-02-14 18:36:40 C (78)
B (80)
http://www.usy.org/
2011-02-14 18:36:20 C (76)
C (79)
http://www.ncsy.org/
2011-02-14 18:36:05 no data
C (77)
http://www.bbyo.org/
2011-02-14 04:11:57 B (81)
B (84)
http://www.theholidayspot.com/valentine/
2011-02-14 04:11:25 D (68)
B (89)
http://holidays.kaboose.com/valentines-day/
2011-02-14 04:11:10 C (76)
B (87)
http://www.mydearvalentine.com/