How to enable YSlow in Firefox?

I have installed the latest versions of YSlow and Firebug into the latest version of Firefox on Windows 7 (and restarted Firefox), but when I click on YSlow nothing happens. Also, when I click on Firebug, it opens but has no YSlow tab. I have disabled all other Firefox plugi开发者_运维知识库ns and played with right-clicking YSlow and clicking run once and auto-run.

What am I doing wrong?

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As a temporary solution, try using the YSlow bookmarklet.

It's an equivalent of regular YSlow.

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Try running Firefox in Safe Mode and disable other plugins that may conflict with YSlow. Also ensure you have really restarted Firefox.

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YSlow seems to have got broken inside firebug extension in latest firefox release as evident from this tweet from their official twitter handle. Try using GTMetrix google chrome extension. It provides one of the most exhaustive web performance statistics using PageSpeed and ySlow both. Below I've mentioned google chrome store extension link. The only thing is that you will have to use chrome instead of firefox as your web browser.

https://chrome.google.com/webstore/detail/gtmetrix-plugin/maaoaegejdlcdijmlfmpmeknliggkfdm