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YSlow analyzes web pages and suggests ways to improve their performance based on a set of rules for high performance web pages.

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When using **PhantomJS** with my Behat tests, I use the following command `phantomjs --webdriver=8643` & it runs through all the tests. However, when using it with **ySlow**, it doesn't listen...

![yslow](https://cloud.githubusercontent.com/assets/367258/6818910/777ac1c8-d2de-11e4-9331-237b349e4c3e.PNG) The versions may not matter because this issue is faced in a Virtual environment. It is the VMWare Horizon client where we have 3 browsers. YSlow works in Chrome....

On Firefox 36.0a2 with Firebug 2.0.7, I get this error when I click on _Run Test_: ``` Error: Exposing privileged or cross-origin callable is prohibited panel.html:1:11 ```

After building yslow using `$ make nodeserver` I tried running it with `$ node yslow-server.js` and got the following error: ``` module.js:340 throw err; ^ Error: Cannot find module 'jsdom'...

After building yslow using `$ make nodeserver` I tried running it with `$ node yslow-server.js` and got the following error: ``` bash module.js:340 throw err; ^ Error: Cannot find module...

jsdom >= 4.0.0 only works with io.js, which is why yslow nodejs har reader stopped working

Hello, I am having problem with Yahoo Smush.it. I only can smush just one image at a time (url page). When i try to smush two or more images i...

Oh no! It looks like this Pages site has been disabled due to a misconfigured custom domain. Are you the site owner? You can quickly fix this issue by updating...

Got a crash on slow 3.1.8: ``` /var/www/jiffy/nodejs/node_modules/yslow/lib/yslow.js:1543 yscontext.result_set.url = yscontext.component_set.doc_comp.url; ^ TypeError: Cannot read property 'url' of undefined at Object.YSLOW.controller.lint (/var/www/jiffy/nodejs/node_modules/yslow/lib/yslow.js:1543:68) at Object.run (/var/www/jiffy/nodejs/node_modules/yslow/lib/yslow.js:6526:30) at /var/www/jiffy/nodejs/server.js:235:57 at /var/www/jiffy/nodejs/node_modules/newrelic/node_modules/continuation-local-storage/node_modules/async-listener/glue.js:188:31 at...

Hi, I am training to run the following: If i run phantomjs using the YSlow for PhantomJS and passing my cookie in the header to pass the ADFS authentication and...