I've uninstalled and reinstalled Firebug and YSlow a bunch of times and still haven't fixed my issue that I'm having: Anytime I load a page the "Finding...
Hi I have an image which is dynamic as given in the sample below http://abc.com/images?image=xyz I have tried setting the max age cache control as given below...
Hi, I have an application with 3 frames. The first time the frameset load YSlow give infos about the 3 frames ans their components. When on frame's content...
Our company is in the midst of analyzing the impact of 8 of the 12 rules for our site. The first three: GZIP, ETags and Minify JavaScripts, demonstrated no...
This is not directly related to YSlow specifically but I guess it could fall under a feature request. The Key point to improve performance is to reduce the...
If I want to load the stylesheet for only the correct media, how should I go about doing it? Other than the user-agent, is there any way of detecting the...
I'm trying out CacheFly (a cheap CDN). I posted a couple files there (two images, a compressed css file, and a compressed javascript file). These files were...
Not sure what I am missing on my site but for some reason YSlow is telling me to add an expires header on this site: http://www.vacation-rental-wonderland.com/...
I am using the Yslow tool & am getting a grade F with gzip on this page: http://www.vacation-rental-wonderland.com/ does it not recognize when people use the...
Steve, It is my understanding from reading your book that a browser will cache media for the length of time set in Cache-Control and then after that length of...
Hello all, I have updated YSlow today to 0.9.2 (previous version was 0.8). After this, the following error message started to appear in firebug on almost every...
Hey all, I've got a question regarding gzipping the components of your web pages. I'm new to this group and see most of the posts here relate to the excellent...
Hi folks! Thanks for the excellent Yslow - its simply rocks. With my latest yslow upgrade, I noticed that slowness hit the fan. Yslow seems to try and load a...
Hi Performancers! Hope you're doing well with your site's tunning, I'm testing some code I've build based on Steve's tips, and I want to try a real CDN besides...
I got a YSlow report for my site. In the Stats tab it shows, 0.0K 15 undefineds What does 'undefineds' refer to? Can someone explain? Thanks Titus...
Steve, I'm reading your book and it says that Cache-Control was introduced in HTTP/1.1 to be an alternative to Expires. In the tool I have some warning for...
I also have a query regarding Rule "Minify JS": All our JS code including Dojo are compressed with the only exception that the compressed dojo js contains a...
Hi Everyone, We are using DOJO as part of our website. It has been included at the end of body tag, but when I check YSlow, it tells me 6. Put JS at the ...
Hi everyone, hi Steve, Just want to let you guys know that I've had a look over Steve's book, and all I can say is.... it's all there! :) Very happy with it,...
[See the full blog on Yahoo! Developer Network: http://developer.yahoo.net/blog/archives/2007/11/velocity_web_pe.html] O'Reilly just announced Velocity ...
Hi, In our homepage (current yslow score 95%) we decided to cut an URL request to a 1x1 pixel image and instead use the data URL scheme: http://nestoria.co.uk/...
Just curious how YSlow knows a CDN is present when running an analysis. I work for Akamai but the opinoins below are mine and aren't necessarily those of my...
I've seen (and understand why) many places[1] suggest far-future expires header (or max-age) on images/css etc that dont change. I use this, but by default the...
Hi I find the following in the cached requests tab Empty Cache Primed Cache 43.9K 1 HTML document (est) 2.5K 3 Style Sheet Files 103.7K 19 JavaScript Files ...
Our department is conducting performance tests comparing current pages to updated pages based on the the YSLOW rules. We are using Silk Performance tools to...
