hi there, i am an uni student and studying computer science. currently, i have an assignment regarding the performance analysis of websites. Can i use YSlow...
1634
satyaprakasha1
Aug 2, 2010 3:55 pm
You do not need permission, as I feel. When it is freely available for everyone to use then why any restriction for educational purpose!...
1635
Bill Moseley
whmoseley
Aug 3, 2010 7:26 pm
Anyone here embedding CSS background images in the CSS using data URLs? I'm looking for opinions of using this technique compared to sprite sheets (or...
1636
Greg Griffiths
yepg@...
Aug 4, 2010 12:04 am
Bill, Check out http://mattsnider.com/css/using-data-uris/, as well as the original post by Nicolas Zakas ...
1637
Bill Moseley
whmoseley
Aug 4, 2010 6:06 pm
... Thanks, I understand how to implement, but I was looking more for comments about the value of using this technique. I think we all agree that for first...
1639
stephen_thair
Aug 6, 2010 2:56 pm
We had an interesting conversion at Site Confidence this week about user behaviour, performance and tabbed browsers. The key insight was about how we use the...
1640
ivo
cervantes_vive
Aug 6, 2010 7:27 pm
<p>This does match my experience & what I observe in those around me. I'm curious of any studies on a true representative set.</p> <p>I wonder if google...
1641
d3vlabs
Aug 9, 2010 3:14 pm
Is there Smush.IT like application that works in offline mode. Maybe as add-on to Photoshop or Fireworks or standalone app....
1642
Elyrion
Aug 11, 2010 1:38 pm
I have been analysing a page for a client that sometimes (and only sometimes) ahs some performance issues and they blame it on our trackingscript /...
1643
Elyrion
Aug 11, 2010 2:38 pm
Yslow and pagespeed suggest caching, that is to add expire headers tot he resources. But when I look at the page most resources are loaded from the cache and...
1644
Rob Larsen
super_genius.rm
Aug 11, 2010 2:51 pm
URL?...
1645
सत्य ...
satyaprakasha1
Aug 11, 2010 6:21 pm
Mime type is one of the performance issue. but I think should be negligible. but it is , so I have suggested that Content-type should be the first meta and...
1646
smto_dtk
Aug 11, 2010 10:39 pm
Has anyone else noticed that looking over element timings in the Net panel of Firebug, nothing seems to be less than 15ms? Seems as if there is something...
1647
Antonia Kwok
antoniakwok
Aug 11, 2010 10:48 pm
Elyrion, How far in future are you setting the expires header? YSlow will give warning for components with expiration less than 2 days. With a longer...
1648
Rob Larsen
super_genius.rm
Aug 12, 2010 12:24 am
You may want to check this article, which gives insight on why the bottom limit is 15ms: http://ejohn.org/blog/accuracy-of-javascript-time/ (basically anything...
1649
सत्य ...
satyaprakasha1
Aug 12, 2010 2:58 am
I faced the problem when I frequently update my css file and browser does not update it due to very long future time. So I am using this script: ...
1650
Elyrion
Aug 12, 2010 6:50 am
Thanks, I took a closer look with the httpfox and found that the files are cached via the if-modified option. So a request still goes to the server to ask...
1651
Patrick Meenan
pmeenan
Aug 12, 2010 11:02 am
Nope, because those "if-modified-since" requests take just about as long as downloading the files in the first place. The bulk of the time loading a web page...
1652
smto_dtk
Aug 13, 2010 5:56 pm
Thanks Rob, but it's not JavaScript time I'm worried about. My focus is on network time to download page elements. Wondering if anyone has gotten deep into...
1653
Rob Larsen
super_genius.rm
Aug 13, 2010 6:13 pm
The point is that firebug/yslow/etc is a javascript tool, so it lives on javascript time. Rob LarsenOn Aug 13, 2010 1:56 PM, smto_dtk...
1654
Rob Larsen
super_genius.rm
Aug 16, 2010 12:25 am
Anyone out there automated smush.it type optimizations into an ant task? Searching around got me this (http://github.com/znerd/optipng-ant-task) which is a...
1655
p83822
Aug 20, 2010 7:58 pm
I'm assuming that you don't mean a local devbuild - apologies if you do. (If so then please ignore what follows.) Maybe I'm over cautious but I do this from...
1656
Rob Larsen
super_genius.rm
Aug 20, 2010 8:26 pm
Thanks, Specifically, it's for: http://github.com/paulirish/html5-boilerplate/issues#issue/16 So, how/where it will be used is for a lot of different people to...
1657
serge.travin
Aug 26, 2010 1:40 pm
Hi, I've installed new FireBug version 1.6b1. After this, every page loading ends with message box "TypeError: yscontext is undefined". This happens only with...
1658
xtrengo
Aug 30, 2010 2:30 pm
Hi, I had never tried this before, when I ran it on a website, it reported an error status for over half the images: Error writing the optimized file Is this...
1659
Matthew
mattroche
Aug 31, 2010 7:42 pm
I have been using Smush.it and a few other lossless compression approaches and wanted to survey experiences with lossy algorithms. To be frank, some images...
1660
Sergey Chernyshev
sergeycherny...
Sep 1, 2010 4:12 am
The trick here is how to measure when to stop without involving a user... As for the general jpeg quality, it's definitely part of image post-processing that...
1661
p83822
Sep 1, 2010 5:48 am
Only to say that jpegtran can sometimes squeeze an extra handful of percent of lossless compression. Not really what you were asking I know, but I mention it...
1662
nebloke
Sep 4, 2010 5:40 pm
Hi, I want to generate links to Smushit so that visitors can optimize images online. I can very much understand if you don't want allow links that trigger...
1663
Antonia Kwok
antoniakwok
Sep 4, 2010 8:57 pm
The second part of your request is already supported by smushit. It is how yslow passes the list of images to be optimized. Sent from my iPhone...
