Installing yslow from https://addons.mozilla.org/en-US/firefox/downloads/file/17827/yslow-0.7.0-fx.xpi doesn't work....
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shiff2kl
Jul 25, 2007 3:24 am
Download it from https://addons.mozilla.org/en-US/firefox/addon/5369 ... https://addons.mozilla.org/en-US/firefox/downloads/file/17827/yslow-0.7.0-fx.xpi...
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Steve Howard
howardsr
Jul 25, 2007 6:18 pm
When I run YSlow, it gives me a message at the top which says "WARNING: For a full analysis you need to loosen Firefox's security settings. Go to about:config...
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swapnil.shinde
Jul 25, 2007 7:30 pm
Hi, Please type "about:config" in the address bar of Firefox. This will open the Firefox configuration screen. Please type ...
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petebardo
Jul 25, 2007 7:30 pm
I downloaded and installed Firebug, restarted Firefox, then downloaded and installed YSlow. When I open Firebug, there's no performance tab or any thing that...
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swapnil.shinde
Jul 25, 2007 7:33 pm
What is the Firefox version installed on your machine? YSlow is compatible with FF 2.0+ Swapnil....
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swapnil.shinde
Jul 25, 2007 7:38 pm
Hi David, Thanks for reporting that issue. We have fixed it now. Sorry for the inconvenience caused. Swapnil. ... ...
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scottfrosty2000
Jul 25, 2007 7:41 pm
... Yslow is one of the tabs presented in firebug. Select that tab and then use the tabs above the firebug bar to review the stats. Thanks, -Scott...
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mxyzplkiv
Jul 25, 2007 8:09 pm
I saw YSlow at Web 2.0 and we've been waiting eagerly for it to come out (and the book to come out as well). Thanks for releasing it to the public! Ernest...
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swapnil.shinde
Jul 25, 2007 8:53 pm
Glad to know you are enjoying YSlow [:)] Swapnil....
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tully_tim
Jul 25, 2007 10:09 pm
Was playing with YSlow, and I moved some script's out of the head section to an area definitely outside of it. However, even after clearing cache,...
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petebardo
Jul 25, 2007 10:38 pm
It finally showed up after restarting Firefox a few times. Thanks for the help....
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bayareacoder
Jul 26, 2007 12:37 am
Great tool! But since its already integrated into firebug can I take it out of my status bar? I'd rather just click the firebug icon (or F12) and then click...
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swapnil.shinde
Jul 26, 2007 12:57 am
We've gotten feedback that people don't want to see any of this info in the statusbar. We'll add an option to hide the statusbar info in the next release. ...
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swapnil.shinde
Jul 26, 2007 1:04 am
YSlow will consider a script to be out of head section, if it is anywhere after the <body> element in the document. Did you take the script out of head and add...
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xertroyt
Jul 26, 2007 5:39 pm
Hi. I'm getting an "F" for ETags, but all of my images, css, .js, etc., have the tags . . . What is the rule for the grade?...
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Scott Frost
scottfrosty2000
Jul 26, 2007 5:50 pm
I'm not sure about the actual rule but I understand the logic behind the grade. Click on the category itself and Yslow explains to you why setting ETag *could...
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Ernest Mueller
mxyzplkiv
Jul 26, 2007 6:02 pm
Yeah, ETags are new to me and we're looking into it here at NI too... It appears that our Netscaler load balancer may be inserting ETags for us which would...
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swapnil.shinde
Jul 26, 2007 7:02 pm
Etags should be removed. See here for more details: http://developer.yahoo.com/performance/rules.html#etags Thanks, Swapnil....
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Ernest Mueller
mxyzplkiv
Jul 26, 2007 8:09 pm
Well, they should be removed if they are actually coming from individual servers in a cluster, right? If there's something (like a load balancer) making the...
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Ernest Mueller
mxyzplkiv
Jul 26, 2007 8:59 pm
In the interest of general Web site performance discussion, thought I'd share some of our success stories on Web site performance! We're not a super huge site...
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Scott Frost
scottfrosty2000
Jul 26, 2007 9:28 pm
Ernest, Your NetScaler is setting ETags (which is basically a unique serial # for version of each object served) to the browser. The value in doing this is...
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Ernest Mueller
mxyzplkiv
Jul 26, 2007 9:54 pm
Gotcha. I wasn't sure whether the Netscaler was being "smart" and deduping etags per cluster or not. I'm going to confirm with support. If it or a similar...
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Scott Frost
scottfrosty2000
Jul 27, 2007 12:45 am
In my experience this isn't something a LB box can solve. People use IP or cookie stickiness to tie a session to a particular origin web server. The Netscaler...
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pabloimpallari
Jul 27, 2007 11:12 am
I want it out of the status bar too! And if the tools option popups new tabs instead of new windows will be grat too!...
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dglead
Aug 2, 2007 12:00 am
If a page is serving a JavaScript file dynamically and not including a Content-Length header it seems that YSlow takes it as having a size of 0 bytes. You can...
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Peter Bengtsson
peter_bengts...
Aug 6, 2007 9:34 am
First of all a great tool guys! Thanks. YSlow complains about objects that "do not have a far future Expires header". Eg. our brochure site at www.fry-it.com ...
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Nick Le Mouton
southofheaven
Aug 8, 2007 1:41 am
Hi, Rule 4 of the 13 performance rules talks about gzip'ing components, but there are a few browsers that have problems with gzip'ed js/css. I did some...
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scottfrosty2000
Aug 8, 2007 6:39 pm
... but ... some that ... our ... Nick, I think it's better to address your question by looking at what most users are browsing with. IMHO, the benefit that a...
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Nick Le Mouton
southofheaven
Aug 8, 2007 10:08 pm
Hi Scott, Compressing images using gzip has been noted throughout the internet as a waste of CPU cycles on both ends as a lot of the gif, jpg and png don't ...
