A link to actually download/upgrade YSlow 2 would be nice. Here, let me help: https://addons.mozilla.org/en-US/firefox/addon/5369

Jear thx, finally!
--I'm so happy theres the ver. 2 finnaly
Together with the Serveradministration of my Company I worked out a little Apace .htaccess that applys to these Rules of the last version.

So THX from Germany

Just was suprised by my Firefox, updated the plugin and I really, really like the changes. Especially the possibility to edit the rules (the CDN case ^^).

Great Work!

Looks awesome! Hey, now I can finally get an "A" :)

One note on one of the rules though: I thought there were usability implications if you don't set a width and height on images. I understand the reasoning behind this, so does YSlow actually tested the dimensions of each image against any declared width/height values?

Congrats!

Maybe I had read this wrong in previous posts but I thought there was the possibility to edit the rules if you needed to relax or tighten one of the rules.

@Mark Widner: We are working towards making available a public API to write your own rules.

@Eric Wendelin: we check the height and width specified in the tag and compare against the actual image dimensions. We are not recommending not using the height and width but just scale it right.

@Pramod:
As I hoped :) Great work!

Firefox 无法将文件安装至 https://addons.mozilla.org/en-US/firefox/downloads/latest/5369/addon-5369-latest.xpi，原因为: 下载错误
-228

This almost a week!

When will YSlow be released for FireFox 3.5 (Beta) ?? .. PLEASE... I really appreciate all the work the YSlow team does!!!

Latest version 2.0.0b3 has issues.
It causes JomSocial user registration to fail.

See http://www.jomsocial.com/forum/index.php?f=3&t=5287&p=29263&rb_v=viewtopic#p29263

@DDD: we are currently looking at FireFox 3.5 Beta to see how we can support YSLOW on the beta release. Please stay tuned!

Hi all.
Thanks for the awesome program. It helps a lot.
The only thing that I found is: even if I have an image missing (causing 404) I still get an A on "No 404s".

Again, thanks.

Hello,

I am having some problems with the "Compress components with gzip" rule: it reports that some of the js/css files are not compressed (and gives a lower grade), although I am sure they are compressed. When I access those files directly and check response headers via WebDeveloper I see that it has "Content-Encoding: gzip" directive in the header

There are some other (external) js/css files which are not gzipped but I am confused as to why YSlow lists my files which are gzipped. It seems this happens only when browser uses cached version of the resource.

2.0.0b3 prevented CAPTCHA validation until I unchecked the (default) "Automatically run YSlow when page finishes loading" box in the Options panel.

This may also be the cause for the JomSocial registration issues?

Hello there,

I have a problem:

. I download the ZIP w/ my smush.it folder but it is missing some of them, some 50% of the pics that have had to be smush it.

What is happening?

Grade F on Put JavaScript at bottom

There are 11 Javacript scriptss found in the head of the document

----------------------------------------------------------------------------------
Grade F for spelling

You need an 's' in 'Javascript'' and one less in 'scripts'.

Here are my thoughts on the new version.
Its snazzier and prettier. The ability to control the tests being run is a great features. However where has all the detail gone?

Sure I score 100 A now but I know I don't have far future expiry headers set.
I used to see things like these objects are not at the bottom of the page.
Now It says its ok there are only 2 inline scripts. Ok so its good now but I would still like the level of detail showing me the name of the inline scripts etc.

I used YSlow quite extensively before and now it just feels like a marketing tool. I'm happy its pretty but you have to give the level of detail you did before. This is a great development tool not a "Rank my site" tool.

When O when is Firefox 3.5 support comming?

P.s. love YSlow

And for Opera? :(

Any word on YSlow for Firefox 3.5? RC2 is out so the final will be here soon.

Where is the YSlow update compatible with FF 3.5 ??

Well FF 3.5 is final and released....when is support coming?

YSlow doesn't work in FF3.5, but the latest PageSpeed beta does!
http://code.google.com/speed/page-speed/download.html

Do you have any plan to support for Firefox 3.5?

Thanks,
Minh

I'm waiting for Y!Slow for FF3.5..:D

Please check the Mozilla Addons site for the latest YSlow which works with FF3.5:
https://addons.mozilla.org/en-US/firefox/addon/5369

When you go to the "Put JavaScript at bottom" Tab (I guess that's called a tab, even though its on the side, idk?) in the "Grade" Tab, there is a typo, it currently says "There are # Javacript scriptss found in the head of the document" when it should say "There are # Javascript scripts found in the head of the document", this is not a big thing, its just something you might want to fix. ;-Þ

Typical Yahoo! response... still can't use ySlow with FF3.5.1!

Anyway, Google released a similar add-on, Page Speed. Its compatible with FF3.5.1 and way way much better. Give it a try people!